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Research report guide: Definition, types, and tips

Last updated

5 March 2024

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From successful product launches or software releases to planning major business decisions, research reports serve many vital functions. They can summarize evidence and deliver insights and recommendations to save companies time and resources. They can reveal the most value-adding actions a company should take.

However, poorly constructed reports can have the opposite effect! Taking the time to learn established research-reporting rules and approaches will equip you with in-demand skills. You’ll be able to capture and communicate information applicable to numerous situations and industries, adding another string to your resume bow.

• What are research reports?

A research report is a collection of contextual data, gathered through organized research, that provides new insights into a particular challenge (which, for this article, is business-related). Research reports are a time-tested method for distilling large amounts of data into a narrow band of focus.

Their effectiveness often hinges on whether the report provides:

Strong, well-researched evidence

Comprehensive analysis

Well-considered conclusions and recommendations

Though the topic possibilities are endless, an effective research report keeps a laser-like focus on the specific questions or objectives the researcher believes are key to achieving success. Many research reports begin as research proposals, which usually include the need for a report to capture the findings of the study and recommend a course of action.

A description of the research method used, e.g., qualitative, quantitative, or other

Statistical analysis

Causal (or explanatory) research (i.e., research identifying relationships between two variables)

Inductive research, also known as ‘theory-building’

Deductive research, such as that used to test theories

Action research, where the research is actively used to drive change

• Importance of a research report

Research reports can unify and direct a company's focus toward the most appropriate strategic action. Of course, spending resources on a report takes up some of the company's human and financial resources. Choosing when a report is called for is a matter of judgment and experience.

Some development models used heavily in the engineering world, such as Waterfall development, are notorious for over-relying on research reports. With Waterfall development, there is a linear progression through each step of a project, and each stage is precisely documented and reported on before moving to the next.

The pace of the business world is faster than the speed at which your authors can produce and disseminate reports. So how do companies strike the right balance between creating and acting on research reports?

The answer lies, again, in the report's defined objectives. By paring down your most pressing interests and those of your stakeholders, your research and reporting skills will be the lenses that keep your company's priorities in constant focus.

Honing your company's primary objectives can save significant amounts of time and align research and reporting efforts with ever-greater precision.

Some examples of well-designed research objectives are:

Proving whether or not a product or service meets customer expectations

Demonstrating the value of a service, product, or business process to your stakeholders and investors

Improving business decision-making when faced with a lack of time or other constraints

Clarifying the relationship between a critical cause and effect for problematic business processes

Prioritizing the development of a backlog of products or product features

Comparing business or production strategies

Evaluating past decisions and predicting future outcomes

• Features of a research report

Research reports generally require a research design phase, where the report author(s) determine the most important elements the report must contain.

Just as there are various kinds of research, there are many types of reports.

Here are the standard elements of almost any research-reporting format:

Report summary. A broad but comprehensive overview of what readers will learn in the full report. Summaries are usually no more than one or two paragraphs and address all key elements of the report. Think of the key takeaways your primary stakeholders will want to know if they don’t have time to read the full document.

Introduction. Include a brief background of the topic, the type of research, and the research sample. Consider the primary goal of the report, who is most affected, and how far along the company is in meeting its objectives.

Methods. A description of how the researcher carried out data collection, analysis, and final interpretations of the data. Include the reasons for choosing a particular method. The methods section should strike a balance between clearly presenting the approach taken to gather data and discussing how it is designed to achieve the report's objectives.

Data analysis. This section contains interpretations that lead readers through the results relevant to the report's thesis. If there were unexpected results, include here a discussion on why that might be. Charts, calculations, statistics, and other supporting information also belong here (or, if lengthy, as an appendix). This should be the most detailed section of the research report, with references for further study. Present the information in a logical order, whether chronologically or in order of importance to the report's objectives.

Conclusion. This should be written with sound reasoning, often containing useful recommendations. The conclusion must be backed by a continuous thread of logic throughout the report.

• How to write a research paper

With a clear outline and robust pool of research, a research paper can start to write itself, but what's a good way to start a research report?

Research report examples are often the quickest way to gain inspiration for your report. Look for the types of research reports most relevant to your industry and consider which makes the most sense for your data and goals.

The research report outline will help you organize the elements of your report. One of the most time-tested report outlines is the IMRaD structure:

Introduction

...and Discussion

Pay close attention to the most well-established research reporting format in your industry, and consider your tone and language from your audience's perspective. Learn the key terms inside and out; incorrect jargon could easily harm the perceived authority of your research paper.

Along with a foundation in high-quality research and razor-sharp analysis, the most effective research reports will also demonstrate well-developed:

Internal logic

Narrative flow

Conclusions and recommendations

Readability, striking a balance between simple phrasing and technical insight

How to gather research data for your report

The validity of research data is critical. Because the research phase usually occurs well before the writing phase, you normally have plenty of time to vet your data.

However, research reports could involve ongoing research, where report authors (sometimes the researchers themselves) write portions of the report alongside ongoing research.

One such research-report example would be an R&D department that knows its primary stakeholders are eager to learn about a lengthy work in progress and any potentially important outcomes.

However you choose to manage the research and reporting, your data must meet robust quality standards before you can rely on it. Vet any research with the following questions in mind:

Does it use statistically valid analysis methods?

Do the researchers clearly explain their research, analysis, and sampling methods?

Did the researchers provide any caveats or advice on how to interpret their data?

Have you gathered the data yourself or were you in close contact with those who did?

Is the source biased?

Usually, flawed research methods become more apparent the further you get through a research report.

It's perfectly natural for good research to raise new questions, but the reader should have no uncertainty about what the data represents. There should be no doubt about matters such as:

Whether the sampling or analysis methods were based on sound and consistent logic

What the research samples are and where they came from

The accuracy of any statistical functions or equations

Validation of testing and measuring processes

When does a report require design validation?

A robust design validation process is often a gold standard in highly technical research reports. Design validation ensures the objects of a study are measured accurately, which lends more weight to your report and makes it valuable to more specialized industries.

Product development and engineering projects are the most common research-report examples that typically involve a design validation process. Depending on the scope and complexity of your research, you might face additional steps to validate your data and research procedures.

If you’re including design validation in the report (or report proposal), explain and justify your data-collection processes. Good design validation builds greater trust in a research report and lends more weight to its conclusions.

Choosing the right analysis method

Just as the quality of your report depends on properly validated research, a useful conclusion requires the most contextually relevant analysis method. This means comparing different statistical methods and choosing the one that makes the most sense for your research.

Most broadly, research analysis comes down to quantitative or qualitative methods (respectively: measurable by a number vs subjectively qualified values). There are also mixed research methods, which bridge the need for merging hard data with qualified assessments and still reach a cohesive set of conclusions.

Some of the most common analysis methods in research reports include:

Significance testing (aka hypothesis analysis), which compares test and control groups to determine how likely the data was the result of random chance.

Regression analysis , to establish relationships between variables, control for extraneous variables , and support correlation analysis.

Correlation analysis (aka bivariate testing), a method to identify and determine the strength of linear relationships between variables. It’s effective for detecting patterns from complex data, but care must be exercised to not confuse correlation with causation.

With any analysis method, it's important to justify which method you chose in the report. You should also provide estimates of the statistical accuracy (e.g., the p-value or confidence level of quantifiable data) of any data analysis.

This requires a commitment to the report's primary aim. For instance, this may be achieving a certain level of customer satisfaction by analyzing the cause and effect of changes to how service is delivered. Even better, use statistical analysis to calculate which change is most positively correlated with improved levels of customer satisfaction.

• Tips for writing research reports

There's endless good advice for writing effective research reports, and it almost all depends on the subjective aims of the people behind the report. Due to the wide variety of research reports, the best tips will be unique to each author's purpose.

Consider the following research report tips in any order, and take note of the ones most relevant to you:

No matter how in depth or detailed your report might be, provide a well-considered, succinct summary. At the very least, give your readers a quick and effective way to get up to speed.

Pare down your target audience (e.g., other researchers, employees, laypersons, etc.), and adjust your voice for their background knowledge and interest levels

For all but the most open-ended research, clarify your objectives, both for yourself and within the report.

Leverage your team members’ talents to fill in any knowledge gaps you might have. Your team is only as good as the sum of its parts.

Justify why your research proposal’s topic will endure long enough to derive value from the finished report.

Consolidate all research and analysis functions onto a single user-friendly platform. There's no reason to settle for less than developer-grade tools suitable for non-developers.

What's the format of a research report?

The research-reporting format is how the report is structured—a framework the authors use to organize their data, conclusions, arguments, and recommendations. The format heavily determines how the report's outline develops, because the format dictates the overall structure and order of information (based on the report's goals and research objectives).

What's the purpose of a research-report outline?

A good report outline gives form and substance to the report's objectives, presenting the results in a readable, engaging way. For any research-report format, the outline should create momentum along a chain of logic that builds up to a conclusion or interpretation.

What's the difference between a research essay and a research report?

There are several key differences between research reports and essays:

Research report:

Ordered into separate sections

More commercial in nature

Often includes infographics

Heavily descriptive

More self-referential

Usually provides recommendations

Research essay

Does not rely on research report formatting

More academically minded

Normally text-only

Less detailed

Omits discussion of methods

Usually non-prescriptive 

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Home Market Research

Research Reports: Definition and How to Write Them

Reports are usually spread across a vast horizon of topics but are focused on communicating information about a particular topic and a niche target market. The primary motive of research reports is to convey integral details about a study for marketers to consider while designing new strategies.

Certain events, facts, and other information based on incidents need to be relayed to the people in charge, and creating research reports is the most effective communication tool. Ideal research reports are extremely accurate in the offered information with a clear objective and conclusion. These reports should have a clean and structured format to relay information effectively.

What are Research Reports?

Research reports are recorded data prepared by researchers or statisticians after analyzing the information gathered by conducting organized research, typically in the form of surveys or qualitative methods .

A research report is a reliable source to recount details about a conducted research. It is most often considered to be a true testimony of all the work done to garner specificities of research.

The various sections of a research report are:

• Background/Introduction
• Implemented Methods
• Results based on Analysis
• Deliberation

Learn more: Quantitative Research

Components of Research Reports

Research is imperative for launching a new product/service or a new feature. The markets today are extremely volatile and competitive due to new entrants every day who may or may not provide effective products. An organization needs to make the right decisions at the right time to be relevant in such a market with updated products that suffice customer demands.

The details of a research report may change with the purpose of research but the main components of a report will remain constant. The research approach of the market researcher also influences the style of writing reports. Here are seven main components of a productive research report:

• Research Report Summary: The entire objective along with the overview of research are to be included in a summary which is a couple of paragraphs in length. All the multiple components of the research are explained in brief under the report summary.  It should be interesting enough to capture all the key elements of the report.
• Research Introduction: There always is a primary goal that the researcher is trying to achieve through a report. In the introduction section, he/she can cover answers related to this goal and establish a thesis which will be included to strive and answer it in detail.  This section should answer an integral question: “What is the current situation of the goal?”.  After the research design was conducted, did the organization conclude the goal successfully or they are still a work in progress –  provide such details in the introduction part of the research report.
• Research Methodology: This is the most important section of the report where all the important information lies. The readers can gain data for the topic along with analyzing the quality of provided content and the research can also be approved by other market researchers . Thus, this section needs to be highly informative with each aspect of research discussed in detail.  Information needs to be expressed in chronological order according to its priority and importance. Researchers should include references in case they gained information from existing techniques.
• Research Results: A short description of the results along with calculations conducted to achieve the goal will form this section of results. Usually, the exposition after data analysis is carried out in the discussion part of the report.

Learn more: Quantitative Data

• Research Discussion: The results are discussed in extreme detail in this section along with a comparative analysis of reports that could probably exist in the same domain. Any abnormality uncovered during research will be deliberated in the discussion section.  While writing research reports, the researcher will have to connect the dots on how the results will be applicable in the real world.
• Research References and Conclusion: Conclude all the research findings along with mentioning each and every author, article or any content piece from where references were taken.

Learn more: Qualitative Observation

15 Tips for Writing Research Reports

Writing research reports in the manner can lead to all the efforts going down the drain. Here are 15 tips for writing impactful research reports:

• Prepare the context before starting to write and start from the basics:  This was always taught to us in school – be well-prepared before taking a plunge into new topics. The order of survey questions might not be the ideal or most effective order for writing research reports. The idea is to start with a broader topic and work towards a more specific one and focus on a conclusion or support, which a research should support with the facts.  The most difficult thing to do in reporting, without a doubt is to start. Start with the title, the introduction, then document the first discoveries and continue from that. Once the marketers have the information well documented, they can write a general conclusion.
• Keep the target audience in mind while selecting a format that is clear, logical and obvious to them:  Will the research reports be presented to decision makers or other researchers? What are the general perceptions around that topic? This requires more care and diligence. A researcher will need a significant amount of information to start writing the research report. Be consistent with the wording, the numbering of the annexes and so on. Follow the approved format of the company for the delivery of research reports and demonstrate the integrity of the project with the objectives of the company.
• Have a clear research objective: A researcher should read the entire proposal again, and make sure that the data they provide contributes to the objectives that were raised from the beginning. Remember that speculations are for conversations, not for research reports, if a researcher speculates, they directly question their own research.
• Establish a working model:  Each study must have an internal logic, which will have to be established in the report and in the evidence. The researchers’ worst nightmare is to be required to write research reports and realize that key questions were not included.

Learn more: Quantitative Observation

• Gather all the information about the research topic. Who are the competitors of our customers? Talk to other researchers who have studied the subject of research, know the language of the industry. Misuse of the terms can discourage the readers of research reports from reading further.
• Read aloud while writing. While reading the report, if the researcher hears something inappropriate, for example, if they stumble over the words when reading them, surely the reader will too. If the researcher can’t put an idea in a single sentence, then it is very long and they must change it so that the idea is clear to everyone.
• Check grammar and spelling. Without a doubt, good practices help to understand the report. Use verbs in the present tense. Consider using the present tense, which makes the results sound more immediate. Find new words and other ways of saying things. Have fun with the language whenever possible.
• Discuss only the discoveries that are significant. If some data are not really significant, do not mention them. Remember that not everything is truly important or essential within research reports.

Learn more: Qualitative Data

• Try and stick to the survey questions. For example, do not say that the people surveyed “were worried” about an research issue , when there are different degrees of concern.
• The graphs must be clear enough so that they understand themselves. Do not let graphs lead the reader to make mistakes: give them a title, include the indications, the size of the sample, and the correct wording of the question.
• Be clear with messages. A researcher should always write every section of the report with an accuracy of details and language.
• Be creative with titles – Particularly in segmentation studies choose names “that give life to research”. Such names can survive for a long time after the initial investigation.
• Create an effective conclusion: The conclusion in the research reports is the most difficult to write, but it is an incredible opportunity to excel. Make a precise summary. Sometimes it helps to start the conclusion with something specific, then it describes the most important part of the study, and finally, it provides the implications of the conclusions.
• Get a couple more pair of eyes to read the report. Writers have trouble detecting their own mistakes. But they are responsible for what is presented. Ensure it has been approved by colleagues or friends before sending the find draft out.

Learn more: Market Research and Analysis

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Chapter 11: Presenting Your Research

Writing a Research Report in American Psychological Association (APA) Style

Learning Objectives

• Identify the major sections of an APA-style research report and the basic contents of each section.
• Plan and write an effective APA-style research report.

In this section, we look at how to write an APA-style empirical research report , an article that presents the results of one or more new studies. Recall that the standard sections of an empirical research report provide a kind of outline. Here we consider each of these sections in detail, including what information it contains, how that information is formatted and organized, and tips for writing each section. At the end of this section is a sample APA-style research report that illustrates many of these principles.

Sections of a Research Report

Title page and abstract.

An APA-style research report begins with a  title page . The title is centred in the upper half of the page, with each important word capitalized. The title should clearly and concisely (in about 12 words or fewer) communicate the primary variables and research questions. This sometimes requires a main title followed by a subtitle that elaborates on the main title, in which case the main title and subtitle are separated by a colon. Here are some titles from recent issues of professional journals published by the American Psychological Association.

• Sex Differences in Coping Styles and Implications for Depressed Mood
• Effects of Aging and Divided Attention on Memory for Items and Their Contexts
• Computer-Assisted Cognitive Behavioural Therapy for Child Anxiety: Results of a Randomized Clinical Trial
• Virtual Driving and Risk Taking: Do Racing Games Increase Risk-Taking Cognitions, Affect, and Behaviour?

Below the title are the authors’ names and, on the next line, their institutional affiliation—the university or other institution where the authors worked when they conducted the research. As we have already seen, the authors are listed in an order that reflects their contribution to the research. When multiple authors have made equal contributions to the research, they often list their names alphabetically or in a randomly determined order.

In some areas of psychology, the titles of many empirical research reports are informal in a way that is perhaps best described as “cute.” They usually take the form of a play on words or a well-known expression that relates to the topic under study. Here are some examples from recent issues of the Journal Psychological Science .

• “Smells Like Clean Spirit: Nonconscious Effects of Scent on Cognition and Behavior”
• “Time Crawls: The Temporal Resolution of Infants’ Visual Attention”
• “Scent of a Woman: Men’s Testosterone Responses to Olfactory Ovulation Cues”
• “Apocalypse Soon?: Dire Messages Reduce Belief in Global Warming by Contradicting Just-World Beliefs”
• “Serial vs. Parallel Processing: Sometimes They Look Like Tweedledum and Tweedledee but They Can (and Should) Be Distinguished”
• “How Do I Love Thee? Let Me Count the Words: The Social Effects of Expressive Writing”

Individual researchers differ quite a bit in their preference for such titles. Some use them regularly, while others never use them. What might be some of the pros and cons of using cute article titles?

For articles that are being submitted for publication, the title page also includes an author note that lists the authors’ full institutional affiliations, any acknowledgments the authors wish to make to agencies that funded the research or to colleagues who commented on it, and contact information for the authors. For student papers that are not being submitted for publication—including theses—author notes are generally not necessary.

The  abstract  is a summary of the study. It is the second page of the manuscript and is headed with the word  Abstract . The first line is not indented. The abstract presents the research question, a summary of the method, the basic results, and the most important conclusions. Because the abstract is usually limited to about 200 words, it can be a challenge to write a good one.

Introduction

The  introduction  begins on the third page of the manuscript. The heading at the top of this page is the full title of the manuscript, with each important word capitalized as on the title page. The introduction includes three distinct subsections, although these are typically not identified by separate headings. The opening introduces the research question and explains why it is interesting, the literature review discusses relevant previous research, and the closing restates the research question and comments on the method used to answer it.

The Opening

The  opening , which is usually a paragraph or two in length, introduces the research question and explains why it is interesting. To capture the reader’s attention, researcher Daryl Bem recommends starting with general observations about the topic under study, expressed in ordinary language (not technical jargon)—observations that are about people and their behaviour (not about researchers or their research; Bem, 2003 [1] ). Concrete examples are often very useful here. According to Bem, this would be a poor way to begin a research report:

Festinger’s theory of cognitive dissonance received a great deal of attention during the latter part of the 20th century (p. 191)

The following would be much better:

The individual who holds two beliefs that are inconsistent with one another may feel uncomfortable. For example, the person who knows that he or she enjoys smoking but believes it to be unhealthy may experience discomfort arising from the inconsistency or disharmony between these two thoughts or cognitions. This feeling of discomfort was called cognitive dissonance by social psychologist Leon Festinger (1957), who suggested that individuals will be motivated to remove this dissonance in whatever way they can (p. 191).

After capturing the reader’s attention, the opening should go on to introduce the research question and explain why it is interesting. Will the answer fill a gap in the literature? Will it provide a test of an important theory? Does it have practical implications? Giving readers a clear sense of what the research is about and why they should care about it will motivate them to continue reading the literature review—and will help them make sense of it.

Breaking the Rules

Researcher Larry Jacoby reported several studies showing that a word that people see or hear repeatedly can seem more familiar even when they do not recall the repetitions—and that this tendency is especially pronounced among older adults. He opened his article with the following humourous anecdote:

A friend whose mother is suffering symptoms of Alzheimer’s disease (AD) tells the story of taking her mother to visit a nursing home, preliminary to her mother’s moving there. During an orientation meeting at the nursing home, the rules and regulations were explained, one of which regarded the dining room. The dining room was described as similar to a fine restaurant except that tipping was not required. The absence of tipping was a central theme in the orientation lecture, mentioned frequently to emphasize the quality of care along with the advantages of having paid in advance. At the end of the meeting, the friend’s mother was asked whether she had any questions. She replied that she only had one question: “Should I tip?” (Jacoby, 1999, p. 3)

Although both humour and personal anecdotes are generally discouraged in APA-style writing, this example is a highly effective way to start because it both engages the reader and provides an excellent real-world example of the topic under study.

The Literature Review

Immediately after the opening comes the  literature review , which describes relevant previous research on the topic and can be anywhere from several paragraphs to several pages in length. However, the literature review is not simply a list of past studies. Instead, it constitutes a kind of argument for why the research question is worth addressing. By the end of the literature review, readers should be convinced that the research question makes sense and that the present study is a logical next step in the ongoing research process.

Like any effective argument, the literature review must have some kind of structure. For example, it might begin by describing a phenomenon in a general way along with several studies that demonstrate it, then describing two or more competing theories of the phenomenon, and finally presenting a hypothesis to test one or more of the theories. Or it might describe one phenomenon, then describe another phenomenon that seems inconsistent with the first one, then propose a theory that resolves the inconsistency, and finally present a hypothesis to test that theory. In applied research, it might describe a phenomenon or theory, then describe how that phenomenon or theory applies to some important real-world situation, and finally suggest a way to test whether it does, in fact, apply to that situation.

Looking at the literature review in this way emphasizes a few things. First, it is extremely important to start with an outline of the main points that you want to make, organized in the order that you want to make them. The basic structure of your argument, then, should be apparent from the outline itself. Second, it is important to emphasize the structure of your argument in your writing. One way to do this is to begin the literature review by summarizing your argument even before you begin to make it. “In this article, I will describe two apparently contradictory phenomena, present a new theory that has the potential to resolve the apparent contradiction, and finally present a novel hypothesis to test the theory.” Another way is to open each paragraph with a sentence that summarizes the main point of the paragraph and links it to the preceding points. These opening sentences provide the “transitions” that many beginning researchers have difficulty with. Instead of beginning a paragraph by launching into a description of a previous study, such as “Williams (2004) found that…,” it is better to start by indicating something about why you are describing this particular study. Here are some simple examples:

Another example of this phenomenon comes from the work of Williams (2004).

Williams (2004) offers one explanation of this phenomenon.

An alternative perspective has been provided by Williams (2004).

We used a method based on the one used by Williams (2004).

Finally, remember that your goal is to construct an argument for why your research question is interesting and worth addressing—not necessarily why your favourite answer to it is correct. In other words, your literature review must be balanced. If you want to emphasize the generality of a phenomenon, then of course you should discuss various studies that have demonstrated it. However, if there are other studies that have failed to demonstrate it, you should discuss them too. Or if you are proposing a new theory, then of course you should discuss findings that are consistent with that theory. However, if there are other findings that are inconsistent with it, again, you should discuss them too. It is acceptable to argue that the  balance  of the research supports the existence of a phenomenon or is consistent with a theory (and that is usually the best that researchers in psychology can hope for), but it is not acceptable to  ignore contradictory evidence. Besides, a large part of what makes a research question interesting is uncertainty about its answer.

The Closing

The  closing  of the introduction—typically the final paragraph or two—usually includes two important elements. The first is a clear statement of the main research question or hypothesis. This statement tends to be more formal and precise than in the opening and is often expressed in terms of operational definitions of the key variables. The second is a brief overview of the method and some comment on its appropriateness. Here, for example, is how Darley and Latané (1968) [2] concluded the introduction to their classic article on the bystander effect:

These considerations lead to the hypothesis that the more bystanders to an emergency, the less likely, or the more slowly, any one bystander will intervene to provide aid. To test this proposition it would be necessary to create a situation in which a realistic “emergency” could plausibly occur. Each subject should also be blocked from communicating with others to prevent his getting information about their behaviour during the emergency. Finally, the experimental situation should allow for the assessment of the speed and frequency of the subjects’ reaction to the emergency. The experiment reported below attempted to fulfill these conditions. (p. 378)

Thus the introduction leads smoothly into the next major section of the article—the method section.

The  method section  is where you describe how you conducted your study. An important principle for writing a method section is that it should be clear and detailed enough that other researchers could replicate the study by following your “recipe.” This means that it must describe all the important elements of the study—basic demographic characteristics of the participants, how they were recruited, whether they were randomly assigned, how the variables were manipulated or measured, how counterbalancing was accomplished, and so on. At the same time, it should avoid irrelevant details such as the fact that the study was conducted in Classroom 37B of the Industrial Technology Building or that the questionnaire was double-sided and completed using pencils.

The method section begins immediately after the introduction ends with the heading “Method” (not “Methods”) centred on the page. Immediately after this is the subheading “Participants,” left justified and in italics. The participants subsection indicates how many participants there were, the number of women and men, some indication of their age, other demographics that may be relevant to the study, and how they were recruited, including any incentives given for participation.

After the participants section, the structure can vary a bit. Figure 11.1 shows three common approaches. In the first, the participants section is followed by a design and procedure subsection, which describes the rest of the method. This works well for methods that are relatively simple and can be described adequately in a few paragraphs. In the second approach, the participants section is followed by separate design and procedure subsections. This works well when both the design and the procedure are relatively complicated and each requires multiple paragraphs.

What is the difference between design and procedure? The design of a study is its overall structure. What were the independent and dependent variables? Was the independent variable manipulated, and if so, was it manipulated between or within subjects? How were the variables operationally defined? The procedure is how the study was carried out. It often works well to describe the procedure in terms of what the participants did rather than what the researchers did. For example, the participants gave their informed consent, read a set of instructions, completed a block of four practice trials, completed a block of 20 test trials, completed two questionnaires, and were debriefed and excused.

In the third basic way to organize a method section, the participants subsection is followed by a materials subsection before the design and procedure subsections. This works well when there are complicated materials to describe. This might mean multiple questionnaires, written vignettes that participants read and respond to, perceptual stimuli, and so on. The heading of this subsection can be modified to reflect its content. Instead of “Materials,” it can be “Questionnaires,” “Stimuli,” and so on.

The  results section  is where you present the main results of the study, including the results of the statistical analyses. Although it does not include the raw data—individual participants’ responses or scores—researchers should save their raw data and make them available to other researchers who request them. Several journals now encourage the open sharing of raw data online.

Although there are no standard subsections, it is still important for the results section to be logically organized. Typically it begins with certain preliminary issues. One is whether any participants or responses were excluded from the analyses and why. The rationale for excluding data should be described clearly so that other researchers can decide whether it is appropriate. A second preliminary issue is how multiple responses were combined to produce the primary variables in the analyses. For example, if participants rated the attractiveness of 20 stimulus people, you might have to explain that you began by computing the mean attractiveness rating for each participant. Or if they recalled as many items as they could from study list of 20 words, did you count the number correctly recalled, compute the percentage correctly recalled, or perhaps compute the number correct minus the number incorrect? A third preliminary issue is the reliability of the measures. This is where you would present test-retest correlations, Cronbach’s α, or other statistics to show that the measures are consistent across time and across items. A final preliminary issue is whether the manipulation was successful. This is where you would report the results of any manipulation checks.

The results section should then tackle the primary research questions, one at a time. Again, there should be a clear organization. One approach would be to answer the most general questions and then proceed to answer more specific ones. Another would be to answer the main question first and then to answer secondary ones. Regardless, Bem (2003) [3] suggests the following basic structure for discussing each new result:

• Remind the reader of the research question.
• Give the answer to the research question in words.
• Present the relevant statistics.
• Qualify the answer if necessary.
• Summarize the result.

Notice that only Step 3 necessarily involves numbers. The rest of the steps involve presenting the research question and the answer to it in words. In fact, the basic results should be clear even to a reader who skips over the numbers.

The  discussion  is the last major section of the research report. Discussions usually consist of some combination of the following elements:

• Summary of the research
• Theoretical implications
• Practical implications
• Limitations
• Suggestions for future research

The discussion typically begins with a summary of the study that provides a clear answer to the research question. In a short report with a single study, this might require no more than a sentence. In a longer report with multiple studies, it might require a paragraph or even two. The summary is often followed by a discussion of the theoretical implications of the research. Do the results provide support for any existing theories? If not, how  can  they be explained? Although you do not have to provide a definitive explanation or detailed theory for your results, you at least need to outline one or more possible explanations. In applied research—and often in basic research—there is also some discussion of the practical implications of the research. How can the results be used, and by whom, to accomplish some real-world goal?

The theoretical and practical implications are often followed by a discussion of the study’s limitations. Perhaps there are problems with its internal or external validity. Perhaps the manipulation was not very effective or the measures not very reliable. Perhaps there is some evidence that participants did not fully understand their task or that they were suspicious of the intent of the researchers. Now is the time to discuss these issues and how they might have affected the results. But do not overdo it. All studies have limitations, and most readers will understand that a different sample or different measures might have produced different results. Unless there is good reason to think they  would have, however, there is no reason to mention these routine issues. Instead, pick two or three limitations that seem like they could have influenced the results, explain how they could have influenced the results, and suggest ways to deal with them.

Most discussions end with some suggestions for future research. If the study did not satisfactorily answer the original research question, what will it take to do so? What  new  research questions has the study raised? This part of the discussion, however, is not just a list of new questions. It is a discussion of two or three of the most important unresolved issues. This means identifying and clarifying each question, suggesting some alternative answers, and even suggesting ways they could be studied.

Finally, some researchers are quite good at ending their articles with a sweeping or thought-provoking conclusion. Darley and Latané (1968) [4] , for example, ended their article on the bystander effect by discussing the idea that whether people help others may depend more on the situation than on their personalities. Their final sentence is, “If people understand the situational forces that can make them hesitate to intervene, they may better overcome them” (p. 383). However, this kind of ending can be difficult to pull off. It can sound overreaching or just banal and end up detracting from the overall impact of the article. It is often better simply to end when you have made your final point (although you should avoid ending on a limitation).

The references section begins on a new page with the heading “References” centred at the top of the page. All references cited in the text are then listed in the format presented earlier. They are listed alphabetically by the last name of the first author. If two sources have the same first author, they are listed alphabetically by the last name of the second author. If all the authors are the same, then they are listed chronologically by the year of publication. Everything in the reference list is double-spaced both within and between references.

Appendices, Tables, and Figures

Appendices, tables, and figures come after the references. An  appendix  is appropriate for supplemental material that would interrupt the flow of the research report if it were presented within any of the major sections. An appendix could be used to present lists of stimulus words, questionnaire items, detailed descriptions of special equipment or unusual statistical analyses, or references to the studies that are included in a meta-analysis. Each appendix begins on a new page. If there is only one, the heading is “Appendix,” centred at the top of the page. If there is more than one, the headings are “Appendix A,” “Appendix B,” and so on, and they appear in the order they were first mentioned in the text of the report.

After any appendices come tables and then figures. Tables and figures are both used to present results. Figures can also be used to illustrate theories (e.g., in the form of a flowchart), display stimuli, outline procedures, and present many other kinds of information. Each table and figure appears on its own page. Tables are numbered in the order that they are first mentioned in the text (“Table 1,” “Table 2,” and so on). Figures are numbered the same way (“Figure 1,” “Figure 2,” and so on). A brief explanatory title, with the important words capitalized, appears above each table. Each figure is given a brief explanatory caption, where (aside from proper nouns or names) only the first word of each sentence is capitalized. More details on preparing APA-style tables and figures are presented later in the book.

Sample APA-Style Research Report

Figures 11.2, 11.3, 11.4, and 11.5 show some sample pages from an APA-style empirical research report originally written by undergraduate student Tomoe Suyama at California State University, Fresno. The main purpose of these figures is to illustrate the basic organization and formatting of an APA-style empirical research report, although many high-level and low-level style conventions can be seen here too.

Key Takeaways

• An APA-style empirical research report consists of several standard sections. The main ones are the abstract, introduction, method, results, discussion, and references.
• The introduction consists of an opening that presents the research question, a literature review that describes previous research on the topic, and a closing that restates the research question and comments on the method. The literature review constitutes an argument for why the current study is worth doing.
• The method section describes the method in enough detail that another researcher could replicate the study. At a minimum, it consists of a participants subsection and a design and procedure subsection.
• The results section describes the results in an organized fashion. Each primary result is presented in terms of statistical results but also explained in words.
• The discussion typically summarizes the study, discusses theoretical and practical implications and limitations of the study, and offers suggestions for further research.
• Practice: Look through an issue of a general interest professional journal (e.g.,  Psychological Science ). Read the opening of the first five articles and rate the effectiveness of each one from 1 ( very ineffective ) to 5 ( very effective ). Write a sentence or two explaining each rating.
• Practice: Find a recent article in a professional journal and identify where the opening, literature review, and closing of the introduction begin and end.
• Practice: Find a recent article in a professional journal and highlight in a different colour each of the following elements in the discussion: summary, theoretical implications, practical implications, limitations, and suggestions for future research.

Long Descriptions

Figure 11.1 long description: Table showing three ways of organizing an APA-style method section.

In the simple method, there are two subheadings: “Participants” (which might begin “The participants were…”) and “Design and procedure” (which might begin “There were three conditions…”).

In the typical method, there are three subheadings: “Participants” (“The participants were…”), “Design” (“There were three conditions…”), and “Procedure” (“Participants viewed each stimulus on the computer screen…”).

In the complex method, there are four subheadings: “Participants” (“The participants were…”), “Materials” (“The stimuli were…”), “Design” (“There were three conditions…”), and “Procedure” (“Participants viewed each stimulus on the computer screen…”). [Return to Figure 11.1]

• Bem, D. J. (2003). Writing the empirical journal article. In J. M. Darley, M. P. Zanna, & H. R. Roediger III (Eds.),  The compleat academic: A practical guide for the beginning social scientist  (2nd ed.). Washington, DC: American Psychological Association. ↵
• Darley, J. M., & Latané, B. (1968). Bystander intervention in emergencies: Diffusion of responsibility.  Journal of Personality and Social Psychology, 4 , 377–383. ↵

A type of research article which describes one or more new empirical studies conducted by the authors.

The page at the beginning of an APA-style research report containing the title of the article, the authors’ names, and their institutional affiliation.

A summary of a research study.

The third page of a manuscript containing the research question, the literature review, and comments about how to answer the research question.

An introduction to the research question and explanation for why this question is interesting.

A description of relevant previous research on the topic being discusses and an argument for why the research is worth addressing.

The end of the introduction, where the research question is reiterated and the method is commented upon.

The section of a research report where the method used to conduct the study is described.

The main results of the study, including the results from statistical analyses, are presented in a research article.

Section of a research report that summarizes the study's results and interprets them by referring back to the study's theoretical background.

Part of a research report which contains supplemental material.

Research Methods in Psychology - 2nd Canadian Edition Copyright © 2015 by Paul C. Price, Rajiv Jhangiani, & I-Chant A. Chiang is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License , except where otherwise noted.

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Uncomplicated Reviews of Educational Research Methods

• Writing a Research Report

.pdf version of this page

This review covers the basic elements of a research report. This is a general guide for what you will see in journal articles or dissertations. This format assumes a mixed methods study, but you can leave out either quantitative or qualitative sections if you only used a single methodology.

This review is divided into sections for easy reference. There are five MAJOR parts of a Research Report:

1.    Introduction 2.    Review of Literature 3.    Methods 4.    Results 5.    Discussion

As a general guide, the Introduction, Review of Literature, and Methods should be about 1/3 of your paper, Discussion 1/3, then Results 1/3.

Section 1 : Cover Sheet (APA format cover sheet) optional, if required.

Section 2: Abstract (a basic summary of the report, including sample, treatment, design, results, and implications) (≤ 150 words) optional, if required.

Section 3 : Introduction (1-3 paragraphs) •    Basic introduction •    Supportive statistics (can be from periodicals) •    Statement of Purpose •    Statement of Significance

Section 4 : Research question(s) or hypotheses •    An overall research question (optional) •    A quantitative-based (hypotheses) •    A qualitative-based (research questions) Note: You will generally have more than one, especially if using hypotheses.

Section 5: Review of Literature ▪    Should be organized by subheadings ▪    Should adequately support your study using supporting, related, and/or refuting evidence ▪    Is a synthesis, not a collection of individual summaries

Section 6: Methods ▪    Procedure: Describe data gathering or participant recruitment, including IRB approval ▪    Sample: Describe the sample or dataset, including basic demographics ▪    Setting: Describe the setting, if applicable (generally only in qualitative designs) ▪    Treatment: If applicable, describe, in detail, how you implemented the treatment ▪    Instrument: Describe, in detail, how you implemented the instrument; Describe the reliability and validity associated with the instrument ▪    Data Analysis: Describe type of procedure (t-test, interviews, etc.) and software (if used)

Section 7: Results ▪    Restate Research Question 1 (Quantitative) ▪    Describe results ▪    Restate Research Question 2 (Qualitative) ▪    Describe results

Section 8: Discussion ▪    Restate Overall Research Question ▪    Describe how the results, when taken together, answer the overall question ▪    ***Describe how the results confirm or contrast the literature you reviewed

Section 9: Recommendations (if applicable, generally related to practice)

Section 10: Limitations ▪    Discuss, in several sentences, the limitations of this study. ▪    Research Design (overall, then info about the limitations of each separately) ▪    Sample ▪    Instrument/s ▪    Other limitations

Section 11: Conclusion (A brief closing summary)

Section 12: References (APA format)

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About research rundowns.

Research Rundowns was made possible by support from the Dewar College of Education at Valdosta State University .

• Experimental Design
• What is Educational Research?
• Writing Research Questions
• Mixed Methods Research Designs
• Qualitative Coding & Analysis
• Qualitative Research Design
• Correlation
• Effect Size
• Instrument, Validity, Reliability
• Mean & Standard Deviation
• Significance Testing (t-tests)
• Steps 1-4: Finding Research
• Steps 5-6: Analyzing & Organizing
• Steps 7-9: Citing & Writing

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Section 1- Evidence-based practice (EBP)

Chapter 6: Components of a Research Report

Components of a research report.

Partido, B.B.

Elements of  research report

The research report contains four main areas:

• Introduction – What is the issue? What is known? What is not known? What are you trying to find out? This sections ends with the purpose and specific aims of the study.
• Methods – The recipe for the study. If someone wanted to perform the same study, what information would they need? How will you answer your research question? This part usually contains subheadings: Participants, Instruments, Procedures, Data Analysis,
• Results – What was found? This is organized by specific aims and provides the results of the statistical analysis.
• Discussion – How do the results fit in with the existing  literature? What were the limitations and areas of future research?

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Home » Research Paper – Structure, Examples and Writing Guide

Research Paper – Structure, Examples and Writing Guide

Table of Contents

Research Paper

Definition:

Research Paper is a written document that presents the author’s original research, analysis, and interpretation of a specific topic or issue.

It is typically based on Empirical Evidence, and may involve qualitative or quantitative research methods, or a combination of both. The purpose of a research paper is to contribute new knowledge or insights to a particular field of study, and to demonstrate the author’s understanding of the existing literature and theories related to the topic.

Structure of Research Paper

The structure of a research paper typically follows a standard format, consisting of several sections that convey specific information about the research study. The following is a detailed explanation of the structure of a research paper:

The title page contains the title of the paper, the name(s) of the author(s), and the affiliation(s) of the author(s). It also includes the date of submission and possibly, the name of the journal or conference where the paper is to be published.

The abstract is a brief summary of the research paper, typically ranging from 100 to 250 words. It should include the research question, the methods used, the key findings, and the implications of the results. The abstract should be written in a concise and clear manner to allow readers to quickly grasp the essence of the research.

Introduction

The introduction section of a research paper provides background information about the research problem, the research question, and the research objectives. It also outlines the significance of the research, the research gap that it aims to fill, and the approach taken to address the research question. Finally, the introduction section ends with a clear statement of the research hypothesis or research question.

Literature Review

The literature review section of a research paper provides an overview of the existing literature on the topic of study. It includes a critical analysis and synthesis of the literature, highlighting the key concepts, themes, and debates. The literature review should also demonstrate the research gap and how the current study seeks to address it.

The methods section of a research paper describes the research design, the sample selection, the data collection and analysis procedures, and the statistical methods used to analyze the data. This section should provide sufficient detail for other researchers to replicate the study.

The results section presents the findings of the research, using tables, graphs, and figures to illustrate the data. The findings should be presented in a clear and concise manner, with reference to the research question and hypothesis.

The discussion section of a research paper interprets the findings and discusses their implications for the research question, the literature review, and the field of study. It should also address the limitations of the study and suggest future research directions.

The conclusion section summarizes the main findings of the study, restates the research question and hypothesis, and provides a final reflection on the significance of the research.

The references section provides a list of all the sources cited in the paper, following a specific citation style such as APA, MLA or Chicago.

How to Write Research Paper

You can write Research Paper by the following guide:

• Choose a Topic: The first step is to select a topic that interests you and is relevant to your field of study. Brainstorm ideas and narrow down to a research question that is specific and researchable.
• Conduct a Literature Review: The literature review helps you identify the gap in the existing research and provides a basis for your research question. It also helps you to develop a theoretical framework and research hypothesis.
• Develop a Thesis Statement : The thesis statement is the main argument of your research paper. It should be clear, concise and specific to your research question.
• Plan your Research: Develop a research plan that outlines the methods, data sources, and data analysis procedures. This will help you to collect and analyze data effectively.
• Collect and Analyze Data: Collect data using various methods such as surveys, interviews, observations, or experiments. Analyze data using statistical tools or other qualitative methods.
• Organize your Paper : Organize your paper into sections such as Introduction, Literature Review, Methods, Results, Discussion, and Conclusion. Ensure that each section is coherent and follows a logical flow.
• Write your Paper : Start by writing the introduction, followed by the literature review, methods, results, discussion, and conclusion. Ensure that your writing is clear, concise, and follows the required formatting and citation styles.
• Edit and Proofread your Paper: Review your paper for grammar and spelling errors, and ensure that it is well-structured and easy to read. Ask someone else to review your paper to get feedback and suggestions for improvement.
• Cite your Sources: Ensure that you properly cite all sources used in your research paper. This is essential for giving credit to the original authors and avoiding plagiarism.

Research Paper Example

Note : The below example research paper is for illustrative purposes only and is not an actual research paper. Actual research papers may have different structures, contents, and formats depending on the field of study, research question, data collection and analysis methods, and other factors. Students should always consult with their professors or supervisors for specific guidelines and expectations for their research papers.

Research Paper Example sample for Students:

Title: The Impact of Social Media on Mental Health among Young Adults

Abstract: This study aims to investigate the impact of social media use on the mental health of young adults. A literature review was conducted to examine the existing research on the topic. A survey was then administered to 200 university students to collect data on their social media use, mental health status, and perceived impact of social media on their mental health. The results showed that social media use is positively associated with depression, anxiety, and stress. The study also found that social comparison, cyberbullying, and FOMO (Fear of Missing Out) are significant predictors of mental health problems among young adults.

Introduction: Social media has become an integral part of modern life, particularly among young adults. While social media has many benefits, including increased communication and social connectivity, it has also been associated with negative outcomes, such as addiction, cyberbullying, and mental health problems. This study aims to investigate the impact of social media use on the mental health of young adults.

Literature Review: The literature review highlights the existing research on the impact of social media use on mental health. The review shows that social media use is associated with depression, anxiety, stress, and other mental health problems. The review also identifies the factors that contribute to the negative impact of social media, including social comparison, cyberbullying, and FOMO.

Methods : A survey was administered to 200 university students to collect data on their social media use, mental health status, and perceived impact of social media on their mental health. The survey included questions on social media use, mental health status (measured using the DASS-21), and perceived impact of social media on their mental health. Data were analyzed using descriptive statistics and regression analysis.

Results : The results showed that social media use is positively associated with depression, anxiety, and stress. The study also found that social comparison, cyberbullying, and FOMO are significant predictors of mental health problems among young adults.

Discussion : The study’s findings suggest that social media use has a negative impact on the mental health of young adults. The study highlights the need for interventions that address the factors contributing to the negative impact of social media, such as social comparison, cyberbullying, and FOMO.

Conclusion : In conclusion, social media use has a significant impact on the mental health of young adults. The study’s findings underscore the need for interventions that promote healthy social media use and address the negative outcomes associated with social media use. Future research can explore the effectiveness of interventions aimed at reducing the negative impact of social media on mental health. Additionally, longitudinal studies can investigate the long-term effects of social media use on mental health.

Limitations : The study has some limitations, including the use of self-report measures and a cross-sectional design. The use of self-report measures may result in biased responses, and a cross-sectional design limits the ability to establish causality.

Implications: The study’s findings have implications for mental health professionals, educators, and policymakers. Mental health professionals can use the findings to develop interventions that address the negative impact of social media use on mental health. Educators can incorporate social media literacy into their curriculum to promote healthy social media use among young adults. Policymakers can use the findings to develop policies that protect young adults from the negative outcomes associated with social media use.

References :

• Twenge, J. M., & Campbell, W. K. (2019). Associations between screen time and lower psychological well-being among children and adolescents: Evidence from a population-based study. Preventive medicine reports, 15, 100918.
• Primack, B. A., Shensa, A., Escobar-Viera, C. G., Barrett, E. L., Sidani, J. E., Colditz, J. B., … & James, A. E. (2017). Use of multiple social media platforms and symptoms of depression and anxiety: A nationally-representative study among US young adults. Computers in Human Behavior, 69, 1-9.
• Van der Meer, T. G., & Verhoeven, J. W. (2017). Social media and its impact on academic performance of students. Journal of Information Technology Education: Research, 16, 383-398.

Appendix : The survey used in this study is provided below.

Social Media and Mental Health Survey

• How often do you use social media per day?
• Less than 30 minutes
• 30 minutes to 1 hour
• 1 to 2 hours
• 2 to 4 hours
• More than 4 hours
• Which social media platforms do you use?
• Others (Please specify)
• How often do you experience the following on social media?
• Social comparison (comparing yourself to others)
• Cyberbullying
• Fear of Missing Out (FOMO)
• Have you ever experienced any of the following mental health problems in the past month?
• Do you think social media use has a positive or negative impact on your mental health?
• Very positive
• Somewhat positive
• Somewhat negative
• Very negative
• In your opinion, which factors contribute to the negative impact of social media on mental health?
• Social comparison
• In your opinion, what interventions could be effective in reducing the negative impact of social media on mental health?
• Education on healthy social media use
• Counseling for mental health problems caused by social media
• Social media detox programs
• Regulation of social media use

Thank you for your participation!

Applications of Research Paper

Research papers have several applications in various fields, including:

• Advancing knowledge: Research papers contribute to the advancement of knowledge by generating new insights, theories, and findings that can inform future research and practice. They help to answer important questions, clarify existing knowledge, and identify areas that require further investigation.
• Informing policy: Research papers can inform policy decisions by providing evidence-based recommendations for policymakers. They can help to identify gaps in current policies, evaluate the effectiveness of interventions, and inform the development of new policies and regulations.
• Improving practice: Research papers can improve practice by providing evidence-based guidance for professionals in various fields, including medicine, education, business, and psychology. They can inform the development of best practices, guidelines, and standards of care that can improve outcomes for individuals and organizations.
• Educating students : Research papers are often used as teaching tools in universities and colleges to educate students about research methods, data analysis, and academic writing. They help students to develop critical thinking skills, research skills, and communication skills that are essential for success in many careers.
• Fostering collaboration: Research papers can foster collaboration among researchers, practitioners, and policymakers by providing a platform for sharing knowledge and ideas. They can facilitate interdisciplinary collaborations and partnerships that can lead to innovative solutions to complex problems.

When to Write Research Paper

Research papers are typically written when a person has completed a research project or when they have conducted a study and have obtained data or findings that they want to share with the academic or professional community. Research papers are usually written in academic settings, such as universities, but they can also be written in professional settings, such as research organizations, government agencies, or private companies.

Here are some common situations where a person might need to write a research paper:

• For academic purposes: Students in universities and colleges are often required to write research papers as part of their coursework, particularly in the social sciences, natural sciences, and humanities. Writing research papers helps students to develop research skills, critical thinking skills, and academic writing skills.
• For publication: Researchers often write research papers to publish their findings in academic journals or to present their work at academic conferences. Publishing research papers is an important way to disseminate research findings to the academic community and to establish oneself as an expert in a particular field.
• To inform policy or practice : Researchers may write research papers to inform policy decisions or to improve practice in various fields. Research findings can be used to inform the development of policies, guidelines, and best practices that can improve outcomes for individuals and organizations.
• To share new insights or ideas: Researchers may write research papers to share new insights or ideas with the academic or professional community. They may present new theories, propose new research methods, or challenge existing paradigms in their field.

Purpose of Research Paper

The purpose of a research paper is to present the results of a study or investigation in a clear, concise, and structured manner. Research papers are written to communicate new knowledge, ideas, or findings to a specific audience, such as researchers, scholars, practitioners, or policymakers. The primary purposes of a research paper are:

• To contribute to the body of knowledge : Research papers aim to add new knowledge or insights to a particular field or discipline. They do this by reporting the results of empirical studies, reviewing and synthesizing existing literature, proposing new theories, or providing new perspectives on a topic.
• To inform or persuade: Research papers are written to inform or persuade the reader about a particular issue, topic, or phenomenon. They present evidence and arguments to support their claims and seek to persuade the reader of the validity of their findings or recommendations.
• To advance the field: Research papers seek to advance the field or discipline by identifying gaps in knowledge, proposing new research questions or approaches, or challenging existing assumptions or paradigms. They aim to contribute to ongoing debates and discussions within a field and to stimulate further research and inquiry.
• To demonstrate research skills: Research papers demonstrate the author’s research skills, including their ability to design and conduct a study, collect and analyze data, and interpret and communicate findings. They also demonstrate the author’s ability to critically evaluate existing literature, synthesize information from multiple sources, and write in a clear and structured manner.

Characteristics of Research Paper

Research papers have several characteristics that distinguish them from other forms of academic or professional writing. Here are some common characteristics of research papers:

• Evidence-based: Research papers are based on empirical evidence, which is collected through rigorous research methods such as experiments, surveys, observations, or interviews. They rely on objective data and facts to support their claims and conclusions.
• Structured and organized: Research papers have a clear and logical structure, with sections such as introduction, literature review, methods, results, discussion, and conclusion. They are organized in a way that helps the reader to follow the argument and understand the findings.
• Formal and objective: Research papers are written in a formal and objective tone, with an emphasis on clarity, precision, and accuracy. They avoid subjective language or personal opinions and instead rely on objective data and analysis to support their arguments.
• Citations and references: Research papers include citations and references to acknowledge the sources of information and ideas used in the paper. They use a specific citation style, such as APA, MLA, or Chicago, to ensure consistency and accuracy.
• Peer-reviewed: Research papers are often peer-reviewed, which means they are evaluated by other experts in the field before they are published. Peer-review ensures that the research is of high quality, meets ethical standards, and contributes to the advancement of knowledge in the field.
• Objective and unbiased: Research papers strive to be objective and unbiased in their presentation of the findings. They avoid personal biases or preconceptions and instead rely on the data and analysis to draw conclusions.

Advantages of Research Paper

Research papers have many advantages, both for the individual researcher and for the broader academic and professional community. Here are some advantages of research papers:

• Contribution to knowledge: Research papers contribute to the body of knowledge in a particular field or discipline. They add new information, insights, and perspectives to existing literature and help advance the understanding of a particular phenomenon or issue.
• Opportunity for intellectual growth: Research papers provide an opportunity for intellectual growth for the researcher. They require critical thinking, problem-solving, and creativity, which can help develop the researcher’s skills and knowledge.
• Career advancement: Research papers can help advance the researcher’s career by demonstrating their expertise and contributions to the field. They can also lead to new research opportunities, collaborations, and funding.
• Academic recognition: Research papers can lead to academic recognition in the form of awards, grants, or invitations to speak at conferences or events. They can also contribute to the researcher’s reputation and standing in the field.
• Impact on policy and practice: Research papers can have a significant impact on policy and practice. They can inform policy decisions, guide practice, and lead to changes in laws, regulations, or procedures.
• Advancement of society: Research papers can contribute to the advancement of society by addressing important issues, identifying solutions to problems, and promoting social justice and equality.

Limitations of Research Paper

Research papers also have some limitations that should be considered when interpreting their findings or implications. Here are some common limitations of research papers:

• Limited generalizability: Research findings may not be generalizable to other populations, settings, or contexts. Studies often use specific samples or conditions that may not reflect the broader population or real-world situations.
• Potential for bias : Research papers may be biased due to factors such as sample selection, measurement errors, or researcher biases. It is important to evaluate the quality of the research design and methods used to ensure that the findings are valid and reliable.
• Ethical concerns: Research papers may raise ethical concerns, such as the use of vulnerable populations or invasive procedures. Researchers must adhere to ethical guidelines and obtain informed consent from participants to ensure that the research is conducted in a responsible and respectful manner.
• Limitations of methodology: Research papers may be limited by the methodology used to collect and analyze data. For example, certain research methods may not capture the complexity or nuance of a particular phenomenon, or may not be appropriate for certain research questions.
• Publication bias: Research papers may be subject to publication bias, where positive or significant findings are more likely to be published than negative or non-significant findings. This can skew the overall findings of a particular area of research.
• Time and resource constraints: Research papers may be limited by time and resource constraints, which can affect the quality and scope of the research. Researchers may not have access to certain data or resources, or may be unable to conduct long-term studies due to practical limitations.

About the author

Muhammad Hassan

Researcher, Academic Writer, Web developer

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Research Report Meaning, Characteristics and Types

Table of contents:-, research report meaning, characteristics of good research report, key characteristics of research report, types of research report, stages in preparation of research report, characteristics of a good report.

A research report is a document that conveys the outcomes of a study or investigation. Its purpose is to communicate the research’s findings, conclusions, and implications to a particular audience. This report aims to offer a comprehensive and unbiased overview of the research process, methodology, and results.

Once the researcher has completed data collection , data processing, developing and testing hypotheses, and interpretation of responses, the next important phase in research is the preparation of the research report. A research report is essential for the communication of research findings to its potential users.

The research report must be free from personal bias, external influences, and subjective factors. i.e., it must be free from one’s liking and disliking. The research report must be prepared to meet impersonal needs.

What is Research Report?

According to Lancaster, “A report is a statement of collected and considered facts, so drawn-ups to give clear and concise information to persons who are not already in possession of the full facts of the subject matter of the report”.

When researchers communicate their results in writing, they create a research report. It includes the research methodology, approaches, data collection precautions, research findings, and recommendations for solving related problems. Managers can put this result into action for more effective decision making .

Generally, top management places a higher emphasis on obtaining the research outcome rather than delving into the research procedure. Hence, the research report acts as a presentation that highlights the procedure and methodology adopted by the researcher.

The research report presents the complete procedure in a comprehensive way that in turn helps the management in making crucial decisions. Creating a research report adheres to a specific format, sequence, and writing style.

Enhance the effectiveness of a research report by incorporating various charts, graphs, diagrams, tables, etc. By using different representation techniques, researchers can convince the audience as well as the management in an effective way.

Characteristics of a good research report are listed below:

• Clarity and Completeness
• Reliability
• Comprehensibility and Readability
• Logical Content

The following paragraphs outline the characteristics of a good research report.

1) Accuracy

Report information must be accurate and based on facts, credible sources and data to establish reliability and trustworthiness. It should not be biased by the personal feelings of the writer. The information presented must be as precise as possible.

2) Simplicity

The language of a research report should be as simple as possible to ensure easy understanding. A good report communicates its message clearly and without ambiguity through its language.

It is a document of practical utility; therefore, it should be grammatically accurate, brief, and easily understood. 

Jargon and technical words should be avoided when writing the report. Even in a technical report, there should be restricted use of technical terms if it is to be presented to laymen.

3) Clarity and Completeness

The report must be straightforward, lucid, and comprehensive in every aspect. Ambiguity should be avoided at all costs. Clarity is achieved through the strategic and practical organization of information. Report writers should divide their report into short paragraphs with headings and insert other suitable signposts to enhance clarity. They should: 

• Approach their task systematically, 
• Clarify their purpose, 
• Define their sources, 
• State their findings and 
• Make necessary recommendations. 

A report should concisely convey the key points without unnecessary length, ensuring that the reader’s patience is not lost and ideas are not confused. Many times, people lack the time to read lengthy reports.

However, a report must also be complete. Sometimes, it is important to have a detailed discussion about the facts. A report is not an essay; therefore, points should be added to it.

5) Appearance

A report requires a visually appealing presentation and, whenever feasible, should be attention-grabbing. An effective report depends on the arrangement, organization, format, layout, typography, printing quality, and paper choice. Big companies often produce very attractive and colourful Annual Reports to showcase their achievements and financial performance.

6) Comprehensibility and Readability

Reports should be clear and straightforward for easy understanding. The style of presentation and the choice of words should be attractive to readers. The writer must present the facts in elegant and grammatically correct English so that the reader is compelled to read the report from beginning to end.

Only then does a report serve its purpose. A report written by different individuals on the same subject matter can vary depending on the intended audience.

7) Reliability

Reports should be reliable and should not create an erroneous impression in the minds of readers due to oversight or neglect. The facts presented in a report should be pertinent.

Every fact in a report must align with the central purpose, but it is also vital to ensure that all pertinent information is included.

Irrelevant facts can make a report confusing, and the exclusion of relevant facts can render it incomplete and likely to mislead.

Report writing should not incur unnecessary expenses. Cost-effective methods should be used to maintain a consistent level of quality when communicating the content.

9) Timelines

Reports can be valuable and practical when they reach the readers promptly. Any delay in the submission of reports renders the preparation of reports futile and sometimes obsolete.

10) Logical Content

The points mentioned in a report should be arranged in a step-by-step logical sequence and not haphazardly. Distinctive points should have self-explanatory headings and sub-headings. The scientific accuracy of facts is very essential for a report.

Planning is necessary before a report is prepared, as reports invariably lead to decision-making, and inaccurate facts may result in unsuccessful decisions.

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A research report serves as a means of communicating research findings to the readers effectively.

• Clarity in Information
• Optimal Length
• Objective and Simple Language
• Clear Thinking and Logical Organization
• Engaging Style
• Clarity in Presentation
• Readability
• Best Composition Practices
• Inferences and Conclusions
• Proper References
• Attractive Appearance

i) Clarity in Information

A well-defined research report must define the what, why, who, whom, when, where, and how of the research study. It must help the readers to understand the focus of the information presented.

ii) Optimal Length

The report should strike a balance, being sufficiently brief and appropriately extended. It should cover the subject matter adequately while maintaining the reader’s interest.

iii) Objective and Simple Language

The report should be written in an objective style, employing simple language. Correctness, precision, and clarity should be prioritized, avoiding wordiness, indirection, and pompous language.

iv) Clear Thinking and Logical Organization

An excellent report integrates clear thinking, logical organization, and sound interpretation of the research findings.

v) Engaging Style

It should not be dull; instead, it should captivate and sustain the reader’s interest.

vi) Accuracy

Accuracy is paramount. The report must present facts objectively, eschewing exaggerations and superlatives.

vii) Clarity in Presentation

Presentation clarity is achieved through familiar words, unambiguous statements, and explicit definitions of new concepts or terms.

viii) Coherence

The logical flow of ideas and a coherent sequence of sentences contribute to a smooth continuity of thought.

ix) Readability

Even technical reports should be easily understandable. Translate technicalities into reader-friendly language.

x) Best Composition Practices

Follow best composition practices, ensuring readability through proper paragraphing, short sentences, and the use of illustrations, examples, section headings, charts, graphs, and diagrams.

xi) Inferences and Conclusions

Draw sound inferences and conclusions from statistical tables without repeating them in verbal form.

xii) Proper References

Footnote references should be correctly formatted, and the bibliography should be reasonably complete.

xiii) Attractive Appearance

The report should be visually appealing, maintaining a neat and clean appearance, whether typed or printed.

xiv) Error-Free

The report should be free from all types of mistakes, including language, factual, spelling, and calculation errors.

In striving for these qualities, the researcher enhances the overall quality of the report.

Research reports are of the following types:

• Technical Report
• Manuscripts for Journal Articles
• Thesis and Dissertations
• Other Types of Research Report

1) Technical Report

Technical reports are reports which contain detailed information about the research problem and its findings. These reports are typically subject to review by individuals interested in research methodology. Such reports include detailed descriptions of used methods for research design such as universe selection , sample preparation, designing questionnaire , identifying potential data sources, etc. These reports provide a complete description of every step, method, and tool used. When crafting technical reports, we assume that users possess knowledge of research methodology, which is why the language used in these reports is technical. Technical reports are valuable in situations where there is a need for statistical analysis of collected data. Researchers also employ it in conducting a series of research studies, where they can repetitively use the methodology.

2) Manuscripts for Journal Articles

When authors prepare a report with a particular layout or design for publishing in an academic or scientific journal, it becomes a “manuscript for journal articles”. Journal articles are a concise and complete presentation of a particular research study. While technical reports present a detailed description of all the activities in research, journal articles are known for presenting only a few critical areas or findings of a study. The readers or audience of journal articles include other researchers, management and executives, strategic analysts and the general public, interested in the topic.

In general, a manuscript for a journal article typically ranges from 10 to 30 pages in length. Sometimes there is a page or word limit for preparing the report. Authors primarily submit manuscripts for journal articles online, although they occasionally send paper copies through regular mail.

3) Thesis and Dissertations

Students working towards a Master’s, PhD, or another higher degree generally produce a thesis or dissertation, which is a form of research report. Like other normal research reports, the thesis or dissertation usually describes the design, tools or methods and results of the student’s research in detail.

These reports typically include a detailed section called the literature review, which encompasses relevant literature and previous studies on the topic. Firstly, the work or research of the student is analysed by a professional researcher or an expert in that particular research field, and then the thesis is written under the guidance of a professional supervisor. Dissertations and theses usually span approximately 120 to 300 pages in length.

Generally, the university or institution decides the length of the dissertation or thesis. A distinctive feature of a thesis or a dissertation is that it is quite economical, as it requires few printed and bound copies of the report. Sometimes electronic copies are required to be submitted along with the hard copy of the thesis or dissertations. Compact discs (CDs) are used to generate the electronic copy.

4) Other Types of Research Report

Along with the above-mentioned types, there are some other types of research reports, which are as follows:

• Popular Report
• Interim Report
• Summary Report
• Research Abstract

i) Popular Report

A popular report is prepared for the use of administrators, executives, or managers. It is simple and attractive in the form of a report. Clear and concise statements are used with less technical or statistical terms. Data representation is kept very simple through minimal use of graphs and charts. It has a different format than that of a technical one by liberally using margins and blank spaces. The style of writing a popular report is journalistic and precise. It is written to facilitate reading rapidly and comprehending quickly.

ii) Interim Report

An interim report is a kind of report which is prepared to show the sponsors, the progress of research work before the final presentation of the report. It is prepared when there is a certain time gap between the data collection and presentation. In this scenario, the completed portion of data analysis along with its findings is described in a particular interim report.

iii) Summary Report

This type of report is related to the interest of the general public. The findings of such a report are helpful for the decision making of general users. The language used for preparing a summary report is comprehensive and simple. The inclusion of numerous graphs and tables enhances the report’s overall clarity and comprehension. The main focus of this report is on the objectives, findings, and implications of the research issue.

iv) Research Abstract

The research abstract is a short presentation of the technical report. All the elements of a particular technical report, such as the research problem, objectives, sampling techniques, etc., are described in the research abstract but the description is concise and easy.

Research reports result from meticulous and deliberate work. Consequently, the preparation of the information can be delineated into the following key stages:

1) Logical Understanding and Subject Analysis: This stage involves a comprehensive grasp and analysis of the subject matter.

2) Planning/Designing the Final Outline: In this phase, the final outline of the report is meticulously planned and designed.

3) Write-Up/Preparation of Rough Draft: The report takes shape during this stage through the composition of a rough draft.

4) Polishing/Finalization of the Research Report: The final stage encompasses refining and polishing the report to achieve its ultimate form.

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Logical understanding and subject analysis.

This initial stage focuses on the subject’s development, which can be achieved through two approaches:

• Logical development and
• Chronological development

Logical development relies on mental connections and associations between different aspects facilitated by rational analysis. Typically, this involves progressing from simple to complex elements. In contrast, chronological development follows a sequence of time or events, with instructions or descriptions often adhering to chronological order.

Designing the Final Outline of the Research Report

This marks the second stage in report writing. Once the subject matter is comprehended, the subsequent step involves structuring the report, arranging its components, and outlining them. This stage is also referred to as the planning  and organization stage. While ideas may flow through the author’s mind, they must create a plan, sketch, or design. These are necessary for achieving a harmonious succession to become more accessible, and the author may be unsure where to commence or conclude. Effective communication of research results hinges not only on language but predominantly on the meticulous planning and organization of the report.

Preparation of the Rough Draft

The third stage involves the writing and drafting of the report. This phase is pivotal for the researcher as they translate their research study into written form, articulating what they have accomplished and how they intend to convey it.

The clarity in communication and reporting during this stage is influenced by several factors, including the audience, the technical complexity of the problem, the researcher’s grasp of facts and techniques, their proficiency in the language (communication skills), the completeness of notes and documentation, and the availability of analyzed results.

Depending on these factors, some authors may produce the report with just one or two drafts. In contrast, others, with less command over language and a lack of clarity about the problem and subject matter, may require more time and multiple drafts (first draft, second draft, third draft, fourth draft, etc.).

Finalization of the Research Report

This marks the last stage, potentially the most challenging phase in all formal writing. Constructing the structure is relatively easy, but refining and adding the finishing touches require considerable time. Consider, for instance, the construction of a house. The work progresses swiftly up to the roofing (structure) stage, but the final touches and completion demand a significant amount of time.

The rough draft, whether it is the second draft or the n th draft, must undergo rewriting and polishing to meet the requirements. The meticulous revision of the rough draft is what distinguishes a mediocre piece of writing from a good one. During the polishing and finalization phase, it is crucial to scrutinize the report for weaknesses in the logical development of the subject and the cohesion of its presentation. Additionally, attention should be given to the mechanics of writing, including language, usage, grammar, spelling, and punctuation.

Good research possesses certain characteristics, which are as follows:

• Empirical Basis
• Logical Approach
• Systematic Nature
• Replicability
• Validity and Verifiability
• Theory and Principle Development

1. Empirical Basis: It implies that any conclusion drawn is grounded in hardcore evidence collected from real-life experiences and observations. This foundation provides external validity to research results.

2. Logical Approach: Good research is logical, guided by the rules of reasoning and analytical processes of induction (general to specific) and deduction (particular to the public). Logical reasoning is integral to making research feasible and meaningful in decision-making.

3. Systematic Nature: Good research is systematic, which adheres to a structured set of rules, following specific steps in a defined sequence. Systematic research encourages creative thinking while avoiding reliance on guesswork and intuition to reach conclusions.

4. Replicability: Scientific research designs, procedures, and results should be replicable. This ensures that anyone apart from the original researcher can assess their validity. Researchers can use or replicate results obtained by others, making the procedures and outcomes of the research both replicable and transmittable.

5. Validity and Verifiability: Good research involves precise observation and accurate description. The researcher selects reliable and valid instruments for data collection, employing statistical measures to portray results accurately. The conclusions drawn are correct and verifiable by both the researcher and others.

6. Theory and Principle Development: It contributes to formulating theories and principles, aiding accurate predictions about the variables under study. By making sound generalizations based on observed samples, researchers extend their findings beyond immediate situations, objects, or groups, formulating generalizations or theories about these factors.

1. What are the key characteristics of research report?

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Scientific Reports

What this handout is about.

This handout provides a general guide to writing reports about scientific research you’ve performed. In addition to describing the conventional rules about the format and content of a lab report, we’ll also attempt to convey why these rules exist, so you’ll get a clearer, more dependable idea of how to approach this writing situation. Readers of this handout may also find our handout on writing in the sciences useful.

Background and pre-writing

Why do we write research reports.

You did an experiment or study for your science class, and now you have to write it up for your teacher to review. You feel that you understood the background sufficiently, designed and completed the study effectively, obtained useful data, and can use those data to draw conclusions about a scientific process or principle. But how exactly do you write all that? What is your teacher expecting to see?

To take some of the guesswork out of answering these questions, try to think beyond the classroom setting. In fact, you and your teacher are both part of a scientific community, and the people who participate in this community tend to share the same values. As long as you understand and respect these values, your writing will likely meet the expectations of your audience—including your teacher.

So why are you writing this research report? The practical answer is “Because the teacher assigned it,” but that’s classroom thinking. Generally speaking, people investigating some scientific hypothesis have a responsibility to the rest of the scientific world to report their findings, particularly if these findings add to or contradict previous ideas. The people reading such reports have two primary goals:

• They want to gather the information presented.
• They want to know that the findings are legitimate.

Your job as a writer, then, is to fulfill these two goals.

How do I do that?

Good question. Here is the basic format scientists have designed for research reports:

• Introduction

Methods and Materials

This format, sometimes called “IMRAD,” may take slightly different shapes depending on the discipline or audience; some ask you to include an abstract or separate section for the hypothesis, or call the Discussion section “Conclusions,” or change the order of the sections (some professional and academic journals require the Methods section to appear last). Overall, however, the IMRAD format was devised to represent a textual version of the scientific method.

The scientific method, you’ll probably recall, involves developing a hypothesis, testing it, and deciding whether your findings support the hypothesis. In essence, the format for a research report in the sciences mirrors the scientific method but fleshes out the process a little. Below, you’ll find a table that shows how each written section fits into the scientific method and what additional information it offers the reader.

Thinking of your research report as based on the scientific method, but elaborated in the ways described above, may help you to meet your audience’s expectations successfully. We’re going to proceed by explicitly connecting each section of the lab report to the scientific method, then explaining why and how you need to elaborate that section.

Although this handout takes each section in the order in which it should be presented in the final report, you may for practical reasons decide to compose sections in another order. For example, many writers find that composing their Methods and Results before the other sections helps to clarify their idea of the experiment or study as a whole. You might consider using each assignment to practice different approaches to drafting the report, to find the order that works best for you.

What should I do before drafting the lab report?

The best way to prepare to write the lab report is to make sure that you fully understand everything you need to about the experiment. Obviously, if you don’t quite know what went on during the lab, you’re going to find it difficult to explain the lab satisfactorily to someone else. To make sure you know enough to write the report, complete the following steps:

• What are we going to do in this lab? (That is, what’s the procedure?)
• Why are we going to do it that way?
• What are we hoping to learn from this experiment?
• Why would we benefit from this knowledge?
• Consult your lab supervisor as you perform the lab. If you don’t know how to answer one of the questions above, for example, your lab supervisor will probably be able to explain it to you (or, at least, help you figure it out).
• Plan the steps of the experiment carefully with your lab partners. The less you rush, the more likely it is that you’ll perform the experiment correctly and record your findings accurately. Also, take some time to think about the best way to organize the data before you have to start putting numbers down. If you can design a table to account for the data, that will tend to work much better than jotting results down hurriedly on a scrap piece of paper.
• Record the data carefully so you get them right. You won’t be able to trust your conclusions if you have the wrong data, and your readers will know you messed up if the other three people in your group have “97 degrees” and you have “87.”
• Consult with your lab partners about everything you do. Lab groups often make one of two mistakes: two people do all the work while two have a nice chat, or everybody works together until the group finishes gathering the raw data, then scrams outta there. Collaborate with your partners, even when the experiment is “over.” What trends did you observe? Was the hypothesis supported? Did you all get the same results? What kind of figure should you use to represent your findings? The whole group can work together to answer these questions.
• Consider your audience. You may believe that audience is a non-issue: it’s your lab TA, right? Well, yes—but again, think beyond the classroom. If you write with only your lab instructor in mind, you may omit material that is crucial to a complete understanding of your experiment, because you assume the instructor knows all that stuff already. As a result, you may receive a lower grade, since your TA won’t be sure that you understand all the principles at work. Try to write towards a student in the same course but a different lab section. That student will have a fair degree of scientific expertise but won’t know much about your experiment particularly. Alternatively, you could envision yourself five years from now, after the reading and lectures for this course have faded a bit. What would you remember, and what would you need explained more clearly (as a refresher)?

Once you’ve completed these steps as you perform the experiment, you’ll be in a good position to draft an effective lab report.

Introductions

How do i write a strong introduction.

For the purposes of this handout, we’ll consider the Introduction to contain four basic elements: the purpose, the scientific literature relevant to the subject, the hypothesis, and the reasons you believed your hypothesis viable. Let’s start by going through each element of the Introduction to clarify what it covers and why it’s important. Then we can formulate a logical organizational strategy for the section.

The inclusion of the purpose (sometimes called the objective) of the experiment often confuses writers. The biggest misconception is that the purpose is the same as the hypothesis. Not quite. We’ll get to hypotheses in a minute, but basically they provide some indication of what you expect the experiment to show. The purpose is broader, and deals more with what you expect to gain through the experiment. In a professional setting, the hypothesis might have something to do with how cells react to a certain kind of genetic manipulation, but the purpose of the experiment is to learn more about potential cancer treatments. Undergraduate reports don’t often have this wide-ranging a goal, but you should still try to maintain the distinction between your hypothesis and your purpose. In a solubility experiment, for example, your hypothesis might talk about the relationship between temperature and the rate of solubility, but the purpose is probably to learn more about some specific scientific principle underlying the process of solubility.

For starters, most people say that you should write out your working hypothesis before you perform the experiment or study. Many beginning science students neglect to do so and find themselves struggling to remember precisely which variables were involved in the process or in what way the researchers felt that they were related. Write your hypothesis down as you develop it—you’ll be glad you did.

As for the form a hypothesis should take, it’s best not to be too fancy or complicated; an inventive style isn’t nearly so important as clarity here. There’s nothing wrong with beginning your hypothesis with the phrase, “It was hypothesized that . . .” Be as specific as you can about the relationship between the different objects of your study. In other words, explain that when term A changes, term B changes in this particular way. Readers of scientific writing are rarely content with the idea that a relationship between two terms exists—they want to know what that relationship entails.

Not a hypothesis:

“It was hypothesized that there is a significant relationship between the temperature of a solvent and the rate at which a solute dissolves.”

Hypothesis:

“It was hypothesized that as the temperature of a solvent increases, the rate at which a solute will dissolve in that solvent increases.”

Put more technically, most hypotheses contain both an independent and a dependent variable. The independent variable is what you manipulate to test the reaction; the dependent variable is what changes as a result of your manipulation. In the example above, the independent variable is the temperature of the solvent, and the dependent variable is the rate of solubility. Be sure that your hypothesis includes both variables.

Justify your hypothesis

You need to do more than tell your readers what your hypothesis is; you also need to assure them that this hypothesis was reasonable, given the circumstances. In other words, use the Introduction to explain that you didn’t just pluck your hypothesis out of thin air. (If you did pluck it out of thin air, your problems with your report will probably extend beyond using the appropriate format.) If you posit that a particular relationship exists between the independent and the dependent variable, what led you to believe your “guess” might be supported by evidence?

Scientists often refer to this type of justification as “motivating” the hypothesis, in the sense that something propelled them to make that prediction. Often, motivation includes what we already know—or rather, what scientists generally accept as true (see “Background/previous research” below). But you can also motivate your hypothesis by relying on logic or on your own observations. If you’re trying to decide which solutes will dissolve more rapidly in a solvent at increased temperatures, you might remember that some solids are meant to dissolve in hot water (e.g., bouillon cubes) and some are used for a function precisely because they withstand higher temperatures (they make saucepans out of something). Or you can think about whether you’ve noticed sugar dissolving more rapidly in your glass of iced tea or in your cup of coffee. Even such basic, outside-the-lab observations can help you justify your hypothesis as reasonable.

Background/previous research

This part of the Introduction demonstrates to the reader your awareness of how you’re building on other scientists’ work. If you think of the scientific community as engaging in a series of conversations about various topics, then you’ll recognize that the relevant background material will alert the reader to which conversation you want to enter.

Generally speaking, authors writing journal articles use the background for slightly different purposes than do students completing assignments. Because readers of academic journals tend to be professionals in the field, authors explain the background in order to permit readers to evaluate the study’s pertinence for their own work. You, on the other hand, write toward a much narrower audience—your peers in the course or your lab instructor—and so you must demonstrate that you understand the context for the (presumably assigned) experiment or study you’ve completed. For example, if your professor has been talking about polarity during lectures, and you’re doing a solubility experiment, you might try to connect the polarity of a solid to its relative solubility in certain solvents. In any event, both professional researchers and undergraduates need to connect the background material overtly to their own work.

Organization of this section

Most of the time, writers begin by stating the purpose or objectives of their own work, which establishes for the reader’s benefit the “nature and scope of the problem investigated” (Day 1994). Once you have expressed your purpose, you should then find it easier to move from the general purpose, to relevant material on the subject, to your hypothesis. In abbreviated form, an Introduction section might look like this:

“The purpose of the experiment was to test conventional ideas about solubility in the laboratory [purpose] . . . According to Whitecoat and Labrat (1999), at higher temperatures the molecules of solvents move more quickly . . . We know from the class lecture that molecules moving at higher rates of speed collide with one another more often and thus break down more easily [background material/motivation] . . . Thus, it was hypothesized that as the temperature of a solvent increases, the rate at which a solute will dissolve in that solvent increases [hypothesis].”

Again—these are guidelines, not commandments. Some writers and readers prefer different structures for the Introduction. The one above merely illustrates a common approach to organizing material.

How do I write a strong Materials and Methods section?

As with any piece of writing, your Methods section will succeed only if it fulfills its readers’ expectations, so you need to be clear in your own mind about the purpose of this section. Let’s review the purpose as we described it above: in this section, you want to describe in detail how you tested the hypothesis you developed and also to clarify the rationale for your procedure. In science, it’s not sufficient merely to design and carry out an experiment. Ultimately, others must be able to verify your findings, so your experiment must be reproducible, to the extent that other researchers can follow the same procedure and obtain the same (or similar) results.

Here’s a real-world example of the importance of reproducibility. In 1989, physicists Stanley Pons and Martin Fleischman announced that they had discovered “cold fusion,” a way of producing excess heat and power without the nuclear radiation that accompanies “hot fusion.” Such a discovery could have great ramifications for the industrial production of energy, so these findings created a great deal of interest. When other scientists tried to duplicate the experiment, however, they didn’t achieve the same results, and as a result many wrote off the conclusions as unjustified (or worse, a hoax). To this day, the viability of cold fusion is debated within the scientific community, even though an increasing number of researchers believe it possible. So when you write your Methods section, keep in mind that you need to describe your experiment well enough to allow others to replicate it exactly.

With these goals in mind, let’s consider how to write an effective Methods section in terms of content, structure, and style.

Sometimes the hardest thing about writing this section isn’t what you should talk about, but what you shouldn’t talk about. Writers often want to include the results of their experiment, because they measured and recorded the results during the course of the experiment. But such data should be reserved for the Results section. In the Methods section, you can write that you recorded the results, or how you recorded the results (e.g., in a table), but you shouldn’t write what the results were—not yet. Here, you’re merely stating exactly how you went about testing your hypothesis. As you draft your Methods section, ask yourself the following questions:

• How much detail? Be precise in providing details, but stay relevant. Ask yourself, “Would it make any difference if this piece were a different size or made from a different material?” If not, you probably don’t need to get too specific. If so, you should give as many details as necessary to prevent this experiment from going awry if someone else tries to carry it out. Probably the most crucial detail is measurement; you should always quantify anything you can, such as time elapsed, temperature, mass, volume, etc.
• Rationale: Be sure that as you’re relating your actions during the experiment, you explain your rationale for the protocol you developed. If you capped a test tube immediately after adding a solute to a solvent, why did you do that? (That’s really two questions: why did you cap it, and why did you cap it immediately?) In a professional setting, writers provide their rationale as a way to explain their thinking to potential critics. On one hand, of course, that’s your motivation for talking about protocol, too. On the other hand, since in practical terms you’re also writing to your teacher (who’s seeking to evaluate how well you comprehend the principles of the experiment), explaining the rationale indicates that you understand the reasons for conducting the experiment in that way, and that you’re not just following orders. Critical thinking is crucial—robots don’t make good scientists.
• Control: Most experiments will include a control, which is a means of comparing experimental results. (Sometimes you’ll need to have more than one control, depending on the number of hypotheses you want to test.) The control is exactly the same as the other items you’re testing, except that you don’t manipulate the independent variable-the condition you’re altering to check the effect on the dependent variable. For example, if you’re testing solubility rates at increased temperatures, your control would be a solution that you didn’t heat at all; that way, you’ll see how quickly the solute dissolves “naturally” (i.e., without manipulation), and you’ll have a point of reference against which to compare the solutions you did heat.

Describe the control in the Methods section. Two things are especially important in writing about the control: identify the control as a control, and explain what you’re controlling for. Here is an example:

“As a control for the temperature change, we placed the same amount of solute in the same amount of solvent, and let the solution stand for five minutes without heating it.”

Structure and style

Organization is especially important in the Methods section of a lab report because readers must understand your experimental procedure completely. Many writers are surprised by the difficulty of conveying what they did during the experiment, since after all they’re only reporting an event, but it’s often tricky to present this information in a coherent way. There’s a fairly standard structure you can use to guide you, and following the conventions for style can help clarify your points.

• Subsections: Occasionally, researchers use subsections to report their procedure when the following circumstances apply: 1) if they’ve used a great many materials; 2) if the procedure is unusually complicated; 3) if they’ve developed a procedure that won’t be familiar to many of their readers. Because these conditions rarely apply to the experiments you’ll perform in class, most undergraduate lab reports won’t require you to use subsections. In fact, many guides to writing lab reports suggest that you try to limit your Methods section to a single paragraph.
• Narrative structure: Think of this section as telling a story about a group of people and the experiment they performed. Describe what you did in the order in which you did it. You may have heard the old joke centered on the line, “Disconnect the red wire, but only after disconnecting the green wire,” where the person reading the directions blows everything to kingdom come because the directions weren’t in order. We’re used to reading about events chronologically, and so your readers will generally understand what you did if you present that information in the same way. Also, since the Methods section does generally appear as a narrative (story), you want to avoid the “recipe” approach: “First, take a clean, dry 100 ml test tube from the rack. Next, add 50 ml of distilled water.” You should be reporting what did happen, not telling the reader how to perform the experiment: “50 ml of distilled water was poured into a clean, dry 100 ml test tube.” Hint: most of the time, the recipe approach comes from copying down the steps of the procedure from your lab manual, so you may want to draft the Methods section initially without consulting your manual. Later, of course, you can go back and fill in any part of the procedure you inadvertently overlooked.
• Past tense: Remember that you’re describing what happened, so you should use past tense to refer to everything you did during the experiment. Writers are often tempted to use the imperative (“Add 5 g of the solid to the solution”) because that’s how their lab manuals are worded; less frequently, they use present tense (“5 g of the solid are added to the solution”). Instead, remember that you’re talking about an event which happened at a particular time in the past, and which has already ended by the time you start writing, so simple past tense will be appropriate in this section (“5 g of the solid were added to the solution” or “We added 5 g of the solid to the solution”).
• Active: We heated the solution to 80°C. (The subject, “we,” performs the action, heating.)
• Passive: The solution was heated to 80°C. (The subject, “solution,” doesn’t do the heating–it is acted upon, not acting.)

Increasingly, especially in the social sciences, using first person and active voice is acceptable in scientific reports. Most readers find that this style of writing conveys information more clearly and concisely. This rhetorical choice thus brings two scientific values into conflict: objectivity versus clarity. Since the scientific community hasn’t reached a consensus about which style it prefers, you may want to ask your lab instructor.

How do I write a strong Results section?

Here’s a paradox for you. The Results section is often both the shortest (yay!) and most important (uh-oh!) part of your report. Your Materials and Methods section shows how you obtained the results, and your Discussion section explores the significance of the results, so clearly the Results section forms the backbone of the lab report. This section provides the most critical information about your experiment: the data that allow you to discuss how your hypothesis was or wasn’t supported. But it doesn’t provide anything else, which explains why this section is generally shorter than the others.

Before you write this section, look at all the data you collected to figure out what relates significantly to your hypothesis. You’ll want to highlight this material in your Results section. Resist the urge to include every bit of data you collected, since perhaps not all are relevant. Also, don’t try to draw conclusions about the results—save them for the Discussion section. In this section, you’re reporting facts. Nothing your readers can dispute should appear in the Results section.

Most Results sections feature three distinct parts: text, tables, and figures. Let’s consider each part one at a time.

This should be a short paragraph, generally just a few lines, that describes the results you obtained from your experiment. In a relatively simple experiment, one that doesn’t produce a lot of data for you to repeat, the text can represent the entire Results section. Don’t feel that you need to include lots of extraneous detail to compensate for a short (but effective) text; your readers appreciate discrimination more than your ability to recite facts. In a more complex experiment, you may want to use tables and/or figures to help guide your readers toward the most important information you gathered. In that event, you’ll need to refer to each table or figure directly, where appropriate:

“Table 1 lists the rates of solubility for each substance”

“Solubility increased as the temperature of the solution increased (see Figure 1).”

If you do use tables or figures, make sure that you don’t present the same material in both the text and the tables/figures, since in essence you’ll just repeat yourself, probably annoying your readers with the redundancy of your statements.

Feel free to describe trends that emerge as you examine the data. Although identifying trends requires some judgment on your part and so may not feel like factual reporting, no one can deny that these trends do exist, and so they properly belong in the Results section. Example:

“Heating the solution increased the rate of solubility of polar solids by 45% but had no effect on the rate of solubility in solutions containing non-polar solids.”

This point isn’t debatable—you’re just pointing out what the data show.

As in the Materials and Methods section, you want to refer to your data in the past tense, because the events you recorded have already occurred and have finished occurring. In the example above, note the use of “increased” and “had,” rather than “increases” and “has.” (You don’t know from your experiment that heating always increases the solubility of polar solids, but it did that time.)

You shouldn’t put information in the table that also appears in the text. You also shouldn’t use a table to present irrelevant data, just to show you did collect these data during the experiment. Tables are good for some purposes and situations, but not others, so whether and how you’ll use tables depends upon what you need them to accomplish.

Tables are useful ways to show variation in data, but not to present a great deal of unchanging measurements. If you’re dealing with a scientific phenomenon that occurs only within a certain range of temperatures, for example, you don’t need to use a table to show that the phenomenon didn’t occur at any of the other temperatures. How useful is this table?

As you can probably see, no solubility was observed until the trial temperature reached 50°C, a fact that the text part of the Results section could easily convey. The table could then be limited to what happened at 50°C and higher, thus better illustrating the differences in solubility rates when solubility did occur.

As a rule, try not to use a table to describe any experimental event you can cover in one sentence of text. Here’s an example of an unnecessary table from How to Write and Publish a Scientific Paper , by Robert A. Day:

As Day notes, all the information in this table can be summarized in one sentence: “S. griseus, S. coelicolor, S. everycolor, and S. rainbowenski grew under aerobic conditions, whereas S. nocolor and S. greenicus required anaerobic conditions.” Most readers won’t find the table clearer than that one sentence.

When you do have reason to tabulate material, pay attention to the clarity and readability of the format you use. Here are a few tips:

• Number your table. Then, when you refer to the table in the text, use that number to tell your readers which table they can review to clarify the material.
• Give your table a title. This title should be descriptive enough to communicate the contents of the table, but not so long that it becomes difficult to follow. The titles in the sample tables above are acceptable.
• Arrange your table so that readers read vertically, not horizontally. For the most part, this rule means that you should construct your table so that like elements read down, not across. Think about what you want your readers to compare, and put that information in the column (up and down) rather than in the row (across). Usually, the point of comparison will be the numerical data you collect, so especially make sure you have columns of numbers, not rows.Here’s an example of how drastically this decision affects the readability of your table (from A Short Guide to Writing about Chemistry , by Herbert Beall and John Trimbur). Look at this table, which presents the relevant data in horizontal rows:

It’s a little tough to see the trends that the author presumably wants to present in this table. Compare this table, in which the data appear vertically:

The second table shows how putting like elements in a vertical column makes for easier reading. In this case, the like elements are the measurements of length and height, over five trials–not, as in the first table, the length and height measurements for each trial.

• Make sure to include units of measurement in the tables. Readers might be able to guess that you measured something in millimeters, but don’t make them try.

• Don’t use vertical lines as part of the format for your table. This convention exists because journals prefer not to have to reproduce these lines because the tables then become more expensive to print. Even though it’s fairly unlikely that you’ll be sending your Biology 11 lab report to Science for publication, your readers still have this expectation. Consequently, if you use the table-drawing option in your word-processing software, choose the option that doesn’t rely on a “grid” format (which includes vertical lines).

How do I include figures in my report?

Although tables can be useful ways of showing trends in the results you obtained, figures (i.e., illustrations) can do an even better job of emphasizing such trends. Lab report writers often use graphic representations of the data they collected to provide their readers with a literal picture of how the experiment went.

When should you use a figure?

Remember the circumstances under which you don’t need a table: when you don’t have a great deal of data or when the data you have don’t vary a lot. Under the same conditions, you would probably forgo the figure as well, since the figure would be unlikely to provide your readers with an additional perspective. Scientists really don’t like their time wasted, so they tend not to respond favorably to redundancy.

If you’re trying to decide between using a table and creating a figure to present your material, consider the following a rule of thumb. The strength of a table lies in its ability to supply large amounts of exact data, whereas the strength of a figure is its dramatic illustration of important trends within the experiment. If you feel that your readers won’t get the full impact of the results you obtained just by looking at the numbers, then a figure might be appropriate.

Of course, an undergraduate class may expect you to create a figure for your lab experiment, if only to make sure that you can do so effectively. If this is the case, then don’t worry about whether to use figures or not—concentrate instead on how best to accomplish your task.

Figures can include maps, photographs, pen-and-ink drawings, flow charts, bar graphs, and section graphs (“pie charts”). But the most common figure by far, especially for undergraduates, is the line graph, so we’ll focus on that type in this handout.

At the undergraduate level, you can often draw and label your graphs by hand, provided that the result is clear, legible, and drawn to scale. Computer technology has, however, made creating line graphs a lot easier. Most word-processing software has a number of functions for transferring data into graph form; many scientists have found Microsoft Excel, for example, a helpful tool in graphing results. If you plan on pursuing a career in the sciences, it may be well worth your while to learn to use a similar program.

Computers can’t, however, decide for you how your graph really works; you have to know how to design your graph to meet your readers’ expectations. Here are some of these expectations:

• Keep it as simple as possible. You may be tempted to signal the complexity of the information you gathered by trying to design a graph that accounts for that complexity. But remember the purpose of your graph: to dramatize your results in a manner that’s easy to see and grasp. Try not to make the reader stare at the graph for a half hour to find the important line among the mass of other lines. For maximum effectiveness, limit yourself to three to five lines per graph; if you have more data to demonstrate, use a set of graphs to account for it, rather than trying to cram it all into a single figure.
• Plot the independent variable on the horizontal (x) axis and the dependent variable on the vertical (y) axis. Remember that the independent variable is the condition that you manipulated during the experiment and the dependent variable is the condition that you measured to see if it changed along with the independent variable. Placing the variables along their respective axes is mostly just a convention, but since your readers are accustomed to viewing graphs in this way, you’re better off not challenging the convention in your report.
• Label each axis carefully, and be especially careful to include units of measure. You need to make sure that your readers understand perfectly well what your graph indicates.
• Number and title your graphs. As with tables, the title of the graph should be informative but concise, and you should refer to your graph by number in the text (e.g., “Figure 1 shows the increase in the solubility rate as a function of temperature”).
• Many editors of professional scientific journals prefer that writers distinguish the lines in their graphs by attaching a symbol to them, usually a geometric shape (triangle, square, etc.), and using that symbol throughout the curve of the line. Generally, readers have a hard time distinguishing dotted lines from dot-dash lines from straight lines, so you should consider staying away from this system. Editors don’t usually like different-colored lines within a graph because colors are difficult and expensive to reproduce; colors may, however, be great for your purposes, as long as you’re not planning to submit your paper to Nature. Use your discretion—try to employ whichever technique dramatizes the results most effectively.
• Try to gather data at regular intervals, so the plot points on your graph aren’t too far apart. You can’t be sure of the arc you should draw between the plot points if the points are located at the far corners of the graph; over a fifteen-minute interval, perhaps the change occurred in the first or last thirty seconds of that period (in which case your straight-line connection between the points is misleading).
• If you’re worried that you didn’t collect data at sufficiently regular intervals during your experiment, go ahead and connect the points with a straight line, but you may want to examine this problem as part of your Discussion section.
• Make your graph large enough so that everything is legible and clearly demarcated, but not so large that it either overwhelms the rest of the Results section or provides a far greater range than you need to illustrate your point. If, for example, the seedlings of your plant grew only 15 mm during the trial, you don’t need to construct a graph that accounts for 100 mm of growth. The lines in your graph should more or less fill the space created by the axes; if you see that your data is confined to the lower left portion of the graph, you should probably re-adjust your scale.
• If you create a set of graphs, make them the same size and format, including all the verbal and visual codes (captions, symbols, scale, etc.). You want to be as consistent as possible in your illustrations, so that your readers can easily make the comparisons you’re trying to get them to see.

How do I write a strong Discussion section?

The discussion section is probably the least formalized part of the report, in that you can’t really apply the same structure to every type of experiment. In simple terms, here you tell your readers what to make of the Results you obtained. If you have done the Results part well, your readers should already recognize the trends in the data and have a fairly clear idea of whether your hypothesis was supported. Because the Results can seem so self-explanatory, many students find it difficult to know what material to add in this last section.

Basically, the Discussion contains several parts, in no particular order, but roughly moving from specific (i.e., related to your experiment only) to general (how your findings fit in the larger scientific community). In this section, you will, as a rule, need to:

Explain whether the data support your hypothesis

• Acknowledge any anomalous data or deviations from what you expected

Derive conclusions, based on your findings, about the process you’re studying

• Relate your findings to earlier work in the same area (if you can)

Explore the theoretical and/or practical implications of your findings

Let’s look at some dos and don’ts for each of these objectives.

This statement is usually a good way to begin the Discussion, since you can’t effectively speak about the larger scientific value of your study until you’ve figured out the particulars of this experiment. You might begin this part of the Discussion by explicitly stating the relationships or correlations your data indicate between the independent and dependent variables. Then you can show more clearly why you believe your hypothesis was or was not supported. For example, if you tested solubility at various temperatures, you could start this section by noting that the rates of solubility increased as the temperature increased. If your initial hypothesis surmised that temperature change would not affect solubility, you would then say something like,

“The hypothesis that temperature change would not affect solubility was not supported by the data.”

Note: Students tend to view labs as practical tests of undeniable scientific truths. As a result, you may want to say that the hypothesis was “proved” or “disproved” or that it was “correct” or “incorrect.” These terms, however, reflect a degree of certainty that you as a scientist aren’t supposed to have. Remember, you’re testing a theory with a procedure that lasts only a few hours and relies on only a few trials, which severely compromises your ability to be sure about the “truth” you see. Words like “supported,” “indicated,” and “suggested” are more acceptable ways to evaluate your hypothesis.

Also, recognize that saying whether the data supported your hypothesis or not involves making a claim to be defended. As such, you need to show the readers that this claim is warranted by the evidence. Make sure that you’re very explicit about the relationship between the evidence and the conclusions you draw from it. This process is difficult for many writers because we don’t often justify conclusions in our regular lives. For example, you might nudge your friend at a party and whisper, “That guy’s drunk,” and once your friend lays eyes on the person in question, she might readily agree. In a scientific paper, by contrast, you would need to defend your claim more thoroughly by pointing to data such as slurred words, unsteady gait, and the lampshade-as-hat. In addition to pointing out these details, you would also need to show how (according to previous studies) these signs are consistent with inebriation, especially if they occur in conjunction with one another. To put it another way, tell your readers exactly how you got from point A (was the hypothesis supported?) to point B (yes/no).

Acknowledge any anomalous data, or deviations from what you expected

You need to take these exceptions and divergences into account, so that you qualify your conclusions sufficiently. For obvious reasons, your readers will doubt your authority if you (deliberately or inadvertently) overlook a key piece of data that doesn’t square with your perspective on what occurred. In a more philosophical sense, once you’ve ignored evidence that contradicts your claims, you’ve departed from the scientific method. The urge to “tidy up” the experiment is often strong, but if you give in to it you’re no longer performing good science.

Sometimes after you’ve performed a study or experiment, you realize that some part of the methods you used to test your hypothesis was flawed. In that case, it’s OK to suggest that if you had the chance to conduct your test again, you might change the design in this or that specific way in order to avoid such and such a problem. The key to making this approach work, though, is to be very precise about the weakness in your experiment, why and how you think that weakness might have affected your data, and how you would alter your protocol to eliminate—or limit the effects of—that weakness. Often, inexperienced researchers and writers feel the need to account for “wrong” data (remember, there’s no such animal), and so they speculate wildly about what might have screwed things up. These speculations include such factors as the unusually hot temperature in the room, or the possibility that their lab partners read the meters wrong, or the potentially defective equipment. These explanations are what scientists call “cop-outs,” or “lame”; don’t indicate that the experiment had a weakness unless you’re fairly certain that a) it really occurred and b) you can explain reasonably well how that weakness affected your results.

If, for example, your hypothesis dealt with the changes in solubility at different temperatures, then try to figure out what you can rationally say about the process of solubility more generally. If you’re doing an undergraduate lab, chances are that the lab will connect in some way to the material you’ve been covering either in lecture or in your reading, so you might choose to return to these resources as a way to help you think clearly about the process as a whole.

This part of the Discussion section is another place where you need to make sure that you’re not overreaching. Again, nothing you’ve found in one study would remotely allow you to claim that you now “know” something, or that something isn’t “true,” or that your experiment “confirmed” some principle or other. Hesitate before you go out on a limb—it’s dangerous! Use less absolutely conclusive language, including such words as “suggest,” “indicate,” “correspond,” “possibly,” “challenge,” etc.

Relate your findings to previous work in the field (if possible)

We’ve been talking about how to show that you belong in a particular community (such as biologists or anthropologists) by writing within conventions that they recognize and accept. Another is to try to identify a conversation going on among members of that community, and use your work to contribute to that conversation. In a larger philosophical sense, scientists can’t fully understand the value of their research unless they have some sense of the context that provoked and nourished it. That is, you have to recognize what’s new about your project (potentially, anyway) and how it benefits the wider body of scientific knowledge. On a more pragmatic level, especially for undergraduates, connecting your lab work to previous research will demonstrate to the TA that you see the big picture. You have an opportunity, in the Discussion section, to distinguish yourself from the students in your class who aren’t thinking beyond the barest facts of the study. Capitalize on this opportunity by putting your own work in context.

If you’re just beginning to work in the natural sciences (as a first-year biology or chemistry student, say), most likely the work you’ll be doing has already been performed and re-performed to a satisfactory degree. Hence, you could probably point to a similar experiment or study and compare/contrast your results and conclusions. More advanced work may deal with an issue that is somewhat less “resolved,” and so previous research may take the form of an ongoing debate, and you can use your own work to weigh in on that debate. If, for example, researchers are hotly disputing the value of herbal remedies for the common cold, and the results of your study suggest that Echinacea diminishes the symptoms but not the actual presence of the cold, then you might want to take some time in the Discussion section to recapitulate the specifics of the dispute as it relates to Echinacea as an herbal remedy. (Consider that you have probably already written in the Introduction about this debate as background research.)

This information is often the best way to end your Discussion (and, for all intents and purposes, the report). In argumentative writing generally, you want to use your closing words to convey the main point of your writing. This main point can be primarily theoretical (“Now that you understand this information, you’re in a better position to understand this larger issue”) or primarily practical (“You can use this information to take such and such an action”). In either case, the concluding statements help the reader to comprehend the significance of your project and your decision to write about it.

Since a lab report is argumentative—after all, you’re investigating a claim, and judging the legitimacy of that claim by generating and collecting evidence—it’s often a good idea to end your report with the same technique for establishing your main point. If you want to go the theoretical route, you might talk about the consequences your study has for the field or phenomenon you’re investigating. To return to the examples regarding solubility, you could end by reflecting on what your work on solubility as a function of temperature tells us (potentially) about solubility in general. (Some folks consider this type of exploration “pure” as opposed to “applied” science, although these labels can be problematic.) If you want to go the practical route, you could end by speculating about the medical, institutional, or commercial implications of your findings—in other words, answer the question, “What can this study help people to do?” In either case, you’re going to make your readers’ experience more satisfying, by helping them see why they spent their time learning what you had to teach them.

Works consulted

We consulted these works while writing this handout. This is not a comprehensive list of resources on the handout’s topic, and we encourage you to do your own research to find additional publications. Please do not use this list as a model for the format of your own reference list, as it may not match the citation style you are using. For guidance on formatting citations, please see the UNC Libraries citation tutorial . We revise these tips periodically and welcome feedback.

American Psychological Association. 2010. Publication Manual of the American Psychological Association . 6th ed. Washington, DC: American Psychological Association.

Beall, Herbert, and John Trimbur. 2001. A Short Guide to Writing About Chemistry , 2nd ed. New York: Longman.

Blum, Deborah, and Mary Knudson. 1997. A Field Guide for Science Writers: The Official Guide of the National Association of Science Writers . New York: Oxford University Press.

Booth, Wayne C., Gregory G. Colomb, Joseph M. Williams, Joseph Bizup, and William T. FitzGerald. 2016. The Craft of Research , 4th ed. Chicago: University of Chicago Press.

Briscoe, Mary Helen. 1996. Preparing Scientific Illustrations: A Guide to Better Posters, Presentations, and Publications , 2nd ed. New York: Springer-Verlag.

Council of Science Editors. 2014. Scientific Style and Format: The CSE Manual for Authors, Editors, and Publishers , 8th ed. Chicago & London: University of Chicago Press.

Davis, Martha. 2012. Scientific Papers and Presentations , 3rd ed. London: Academic Press.

Day, Robert A. 1994. How to Write and Publish a Scientific Paper , 4th ed. Phoenix: Oryx Press.

Porush, David. 1995. A Short Guide to Writing About Science . New York: Longman.

Williams, Joseph, and Joseph Bizup. 2017. Style: Lessons in Clarity and Grace , 12th ed. Boston: Pearson.

You may reproduce it for non-commercial use if you use the entire handout and attribute the source: The Writing Center, University of North Carolina at Chapel Hill

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Types of Research Reports

What is a Research Report?

A research report is a concise document that summarizes the findings, methods, and conclusions of a research study or investigation. There are various types of research reports available for different purposes.

It typically includes details on the research question, methodology, data analysis, and results, providing a structured and informative account of the research process and outcomes.

Table of Contents

• Market Research
• Experimental
• Descriptive
• Exploratory
• Explanatory

Types of Research Report Writing

Limitations, key highlights.

• A research report is a document that gives a quick overview of a research study.
• Types of research reports offer a standardized format and structure, making it easier for readers to navigate and comprehend the information.
• They are useful in fields like academia, business, healthcare, social sciences, and more.
• Different types of report writing determine the report’s primary purpose, i.e., if it should be short, long, or for internal purposes, etc.

Different Types Of Research Reports

1. technical or scientific reports.

Technical and scientific reports communicate research findings to experts and professionals in a particular field.

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Characteristics:

• These reports include technical jargon, detailed methodologies, and in-depth analysis.
• They often have a standardized format for peer review.

 2. Popular Reports

Popular reports are designed for a general audience and aim to inform, educate, or entertain on a wide range of topics.

• Includes clear and jargon-free language
• Uses storytelling, visuals, and anecdotes to engage readers
• Prioritizes readability over deep analysis.

3. Survey Reports

Survey reports include data collected through surveys and focus on presenting insights and opinions on specific issues or questions.

• Contains information on survey methodology, including sample size and data collection methods.
• Presents statistical summaries like percentages and charts.

4. Market Research Reports

Market research reports provide insights into consumer behavior, market trends, and industry analysis.

• Includes market surveys, competitor analysis, and consumer demographics.
• Helps businesses in making strategic decisions.

5. Case Study Reports

Case study reports focus on an in-depth examination of a single entity, often to explore complex, real-life situations.

• Includes detailed descriptions of the case, data collection methods, and analysis.
• Common in business and psychology fields.

6. Analytical Research Reports

Analytical research reports involve a deep analysis of data to uncover patterns, trends, or relationships.

• Uses statistical tools and software to analyze data comprehensively
• Common in fields like economics and social sciences.

7. Review or Literature Survey Reports

Literature review reports provide an overview of existing research on a specific topic, highlighting gaps and trends.

• Synthesizes findings from various sources and provides a historical context
• Often offers recommendations for future research.

8. Experimental Research Reports

Experimental research reports involve controlled experiments to test hypotheses and determine if the results support or reject the hypothesis.

• Uses random sampling and control groups to minimize bias.
• Includes detailed descriptions of the experiment, hypothesis, methods, and statistical analyses.

9. Descriptive Research Reports

Descriptive research reports aim to provide a comprehensive picture of a phenomenon, group, or situation. They seek to answer the “what” and “how” questions.

• Typically, it relies on observations, surveys, and content analysis.
• Focuses on describing and summarizing data.

10. Exploratory Research Reports

Exploratory research reports are conducted when there is little prior knowledge about a subject. They aim to identify key variables and research questions.

• Involves open-ended interviews, focus groups, and literature reviews.
• Findings are preliminary, serving as a basis for further research.

11. Explanatory Research Reports

Explanatory research reports seek to understand the relationships between variables and explain why certain phenomena occur.

• Uses experimental designs, surveys, and statistical analyses.
• Provides in-depth insights into the research problem.

12. Policy or White Papers

Policy or white papers aim to inform policymakers, stakeholders, and the public about specific issues and recommend actions.

• Presents research findings in a concise and accessible manner
• Often consists of policy recommendations.

Components of Research Reports

These are some common components you must know while writing different types of research reports.

1. Title Page:

• Title of the Report
• Institutional Affiliation

2. Abstract: Add a concise summary of the research, including the research question or objective, methodology, key findings, and implications. Typically, it should be no more than 150-250 words.

3. Table of Contents: Include a list of sections and subsections with page numbers.

4. List of Figures and Tables: If your research includes numerical data, add all the statistics and tables along with their corresponding page numbers. It is similar to a table of contents for quantitative data.

5. List of Abbreviations and Symbols: Include any abbreviations or symbols you have used in the report and their meanings.

6. Introduction:

• Provide background information on the topic.
• State the research question or objective.
• Explain the significance and purpose of the study.
• Provide an outline of the report’s structure.

7. Literature Review:

• Review relevant literature and previous research on the topic.
• Identify gaps in existing knowledge.
• Explain how your study contributes to the field.

8. Methodology:

• Describe the research methods and techniques that you used.
• Explain the sampling methods, data collection, and data analysis procedures.
• Discuss any ethical considerations.

9. Results:

• Present the findings of your research.
• Use tables, figures, charts, and graphs to illustrate key points.
• Include descriptive and inferential statistics as needed.

10. Discussion:

• Interpret the results and relate them to the research question.
• Discuss the implications of your findings.
• Compare your results to previous research.
• Address any limitations of your study.

11. Conclusion:

• Summarize the main findings and their significance.
• Restate the research question and how it was addressed.
• Suggest areas for future research.

12. References: Include a list of all the sources cited in your report in a standardized citation style (e.g., APA, MLA, Chicago).

Let us see an example of a research report.

Research Report: The Impact of Artificial Intelligence on the Labor Market

This research study explores the profound changes occurring in the labor market due to the increasing adoption of artificial intelligence (AI) technologies. The study examines the potential benefits and challenges AI poses for the workforce, job displacement, and the skills required in the future job market.

List of Figures and Tables

Introduction, literature review, methodology.

• Figure 1: Trend in AI Adoption by Industry (Page 7)
• Table 1: Summary of Job Displacement Data (Page 9)
• Figure 2: Projected Growth of AI-Related Occupations (Page 11)

The introduction section provides an overview of the research topic. It explains the significance of studying the impact of AI on the labor market, outlines the research questions, and previews the structure of the report.

The literature review section reviews existing research on the effects of AI on employment and the labor market. It discusses the different perspectives on whether AI will create new jobs or lead to job displacement. It also explores the skills and education required for the future workforce.

This section explains the research methods used, such as data collection methods, sources, and analytical techniques. It outlines how data on AI adoption, job displacement, and future job projections were gathered and analyzed.

The results section presents the key findings of the study. It includes data on the extent of AI adoption across industries, job displacement rates, and projections for AI-related occupations.

The discussion section interprets the results in the context of the research questions. It analyzes the potential benefits and challenges AI poses for the labor market, discusses policy implications, and explores the role of education and training in preparing the workforce for the AI era.

In conclusion, this research highlights the transformative impact of artificial intelligence on the labor market. While AI brings opportunities for innovation and efficiency, it also presents challenges related to job displacement and workforce adaptation. Preparing for this evolving job landscape is crucial for individuals and policymakers.

Given below are various types of research reports writing that researchers and organizations use to present findings, progress, and other information.

Here is why the different types of research reports are important.

• Research reports are a primary means of sharing new knowledge and insights with the academic and scientific community. They contribute to the growth of human understanding in various fields.
• They provide a detailed and structured account of the research process, including methods, data, analysis, and conclusions. This documentation is crucial for transparency, replication, and future reference.
• These reports hold researchers accountable for their work. They provide a transparent record of the study, allowing others to assess the validity and reliability of the research.
• These often influence policy decisions, business strategies, and practical applications. For instance, medical research informs healthcare practices, while market research guides business decisions.

Listed below are some limitations of different types of research reports.

• Research reports can be influenced by the researcher’s biases, preferences, or the funder’s interests. It’s essential to assess the methodology critically.
• Findings in research reports may not always be directly applicable to other contexts or populations.
• Certain research reports are not available to everyone due to several barriers, making it hard for people to access important information.
• The process of conducting research, writing a report, and getting it published can be time-consuming.

Final Thoughts

Different types of research reports are important for sharing knowledge, making smart choices, and moving forward in different areas of study. It’s vital for both researchers and those who use research to grasp the different kinds of reports, what goes into them, and why they matter.

Frequently Asked Questions (FAQs)

Q1. Are research reports the same as research papers? Answer: Research reports and research papers share similarities but have distinct purposes and structures. Research papers are often more academic and can vary in structure, while research reports are typically more structured and cater to a broader audience.

Q2. How do I choose the right type of research report for my study? Answer: The choice of research report type depends on your research goals, audience, and the nature of your study. Consider whether you are conducting scientific research, market analysis, academic research, or policy analysis, and select the format that aligns with your objectives.

Q3. Can research reports be used as references in other research reports? Answer: Yes, research reports can be cited and used as references in other research reports as long as they are credible sources. Citing previous research reports adds depth and credibility to your work.

Recommended Articles

This article lists all the types of research reports available for research methodologies. We have also included its format, example, and several report-writing methods. For similar articles, you can check the following articles,

• Types of Research Methodology
• Types of Quantitative Research
• Quantitative Research Examples
• What is Qualitative Data Analysis

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• Research Report
• Post last modified: 11 January 2022
• Reading time: 25 mins read
• Post category: Research Methodology

What is Research Report?

Research reporting is the oral or written presentation of the findings in such detail and form as to be readily understood and assessed by the society, economy or particularly by the researchers.

As earlier said that it is the final stage of the research process and its purpose is to convey to interested persons the whole result of the study. Report writing is common to both academic and managerial situations. In academics, a research report is prepared for comprehensive and application-oriented learning. In businesses or organisations, reports are used for the basis of decision making.

Table of Content

• 1 What is Research Report?
• 2 Research Report Definition
• 3.1 Preliminary Part
• 3.2 Introduction of the Report
• 3.3 Review of Literature
• 3.4 The Research Methodology
• 3.5 Results
• 3.6 Concluding Remarks
• 3.7 Bibliography
• 4 Significance of Report Writing
• 5 Qualities of Good Report
• 6.1 Analysis of the subject matter
• 6.2 Research outline
• 6.3 Preparation of rough draft
• 6.4 Rewriting and polishing
• 6.5 Writing the final draft
• 7 Precautions for Writing Research Reports
• 8.1.1 Technical Report
• 8.1.2 Popular Report
• 8.2.1 Written Report
• 8.2.2 Oral Report

Research Report Definition

According to C. A. Brown , “A report is a communication from someone who has information to someone who wants to use that information.”

According to Goode and Hatt , “The preparation of report is the final stage of research, and it’s purpose is to convey to the interested persons the whole result of the study, in sufficient detail and so arranged as to enable each reader to comprehend the data and to determine for himself the validity of the conclusions.”

It is clear from the above definitions of a research report, it is a brief account of the problem of investigation, the justification of its selection and the procedure of analysis and interpretation. It is only a summary of the entire research proceedings.

In other words, it can be defined as written documents, which presents information in a specialized and concise manner.

Contents of Research Report

Although no hard and fast rules can be laid down, the report must contain the following points.

• Acknowledgement
• Table of contents
• List of tables
• List of graphs
• Introduction
• Background of the research study
• Statement of the problem
• Brief outline of the chapters
• Books review
• Review of articles published in books, journals, periodicals, etc
• Review of articles published in leading newspapers
• Working papers / discusssion paper / study reports
• Articles on authorised websites
• A broad conclusion and indications for further research
• The theoretical framework (variables)
• Model / hypothesis
• Instruments for data collection
• Data collection
• Pilot study
• Processing of data
• Hypothesis / model testing
• Data analysis and interpretation
• Tables and figures
• Conclusions
• Shortcomings
• Suggestions to the problems
• Direction for further research

Preliminary Part

The preliminary part may have seven major components – cover, title, preface, acknowledgement, table of contents, list of tables, list of graphs. Long reports presented in book form have a cover made up of a card sheet. The cover contains title of the research report, the authority to whom the report is submitted, name of the author, etc.

The preface introduces the report to the readers. It gives a very brief introduction of the report. In the acknowledgements author mention names of persons and organisations that have extended co-operation and helped in the various stages of research. Table of contents is essential. It gives the title and page number of each chapter.

Introduction of the Report

The introduction of the research report should clearly and logically bring out the background of the problem addressed in the research. The purpose of the introduction is to introduce the research project to the readers. A clear statement of the problem with specific questions to be answered is presented in the introduction. It contains a brief outline of the chapters.

Review of Literature

The third section reviews the important literature related to the study. A comprehensive review of the research literature referred to must be made. Previous research studies and the important writings in the area under study should be reviewed. Review of literature is helpful to provide a background for the development of the present study.

The researcher may review concerned books, articles published in edited books, journals and periodicals. Researcher may also take review of articles published in leading newspapers. A researcher should study working papers/discussion papers/study reports. It is essential for a broad conclusion and indications for further research.

The Research Methodology

Research methodology is an integral part of the research. It should clearly indicate the universe and the selection of samples, techniques of data collection, analysis and interpretation, statistical techniques, etc.

Results contain pilot study, processing of data, hypothesis/model testing, data analysis and interpretation, tables and figures, etc. This is the heart of the research report. If a pilot study is planned to be used, it’s purpose should be given in the research methodology.

The collected data and the information should be edited, coded, tabulated and analysed with a view to arriving at a valid and authentic conclusion. Tables and figures are used to clarify the significant relationship. The results obtained through tables, graphs should be critically interpreted.

Concluding Remarks

The concluding remarks should discuss the results obtained in the earlier sections, as well as their usefulness and implications. It contains findings, conclusions, shortcomings, suggestions to the problem and direction for future research. Findings are statements of factual information based upon the data analysis.

Conclusions must clearly explain whether the hypothesis have been established and rejected. This part requires great expertise and preciseness. A report should also refer to the limitations of the applicability of the research inferences. It is essential to suggest the theoretical, practical and policy implications of the research. The suggestions should be supported by scientific and logical arguments. The future direction of research based on the work completed should also be outlined.

Bibliography

The bibliography is an alphabetic list of books, journal articles, reports, etc, published or unpublished, read, referred to, examined by the researcher in preparing the report. The bibliography should follow standard formats for books, journal articles, research reports.

The end of the research report may consist of appendices, listed in respect of all technical data. Appendices are for the purpose of providing detailed data or information that would be too cumbersome within the main body of the research report.

Significance of Report Writing

Report writing is an important communication medium in organisations. The most crucial findings might have come out through a research report. Report is common to academics and managers also. Reports are used for comprehensive and application oriented learning in academics. In organisations, reports are used for the basis of decision making. The importance of report writing can be discussed as under.

Through research reports, a manager or an executive can quickly get an idea of a current scenario which improves his information base for making sound decisions affecting future operations of the company or enterprise. The research report acts as a means of communication of various research findings to the interested parties, organisations and general public.

Good report writing play, a significant role of conveying unknown facts about the phenomenon to the concerned parties. This may provide new insights and new opportunities to the people. Research report plays a key role in making effective decisions in marketing, production, banking, materials, human resource development and government also. Good report writing is used for economic planning and optimum utilisation of resources for the development of a nation.

Report writing facilitates the validation of generalisation. A research report is an end product of research. As earlier said that report writing provides useful information in arriving at rational decisions that may reform the business and society. The findings, conclusions, suggestions and recommendations are useful to academicians, scholars and policymakers. Report writing provides reference material for further research in the same or similar areas of research to the concerned parties.

While preparing a research report, a researcher should take some proper precautions. Report writing should be simple, lucid and systematic. Report writing should be written speedily without interrupting the continuity of thought. The report writing should sustain the interest of readers.

Qualities of Good Report

Report writing is a highly skilled job. It is a process of analysing, understanding and consolidating the findings and projecting a meaningful view of the phenomenon studied. A good report writing is essential for effective communication.

Following are the essential qualities of good report:

• A research report is essentially a scientific documentation. It should have a suggestive title, headings and sub-headings, paragraphs arranged in a logical sequence.
• Good research report should include everything that is relevant and exclude everything that is irrelevant. It means that it should contain the facts rather than opinion.
• The language of the report should be simple and unambiguous. It means that it should be free from biases of the researchers derived from the past experience. Confusion, pretentiousness and pomposity should be carefully guarded against. It means that the language of the report should be simple, employing appropriate words, idioms and expressions.
• The report must be free from grammatical mistakes. It must be grammatically accurate. Faulty construction of sentences makes the meaning of the narrative obscure and ambiguous.
• The report has to take into consideration two facts. Firstly, for whom the report is meant and secondly, what is his level of knowledge. The report has to look to the subject matter of the report and the fact as to the level of knowledge of the person for whom it is meant. Because all reports are not meant for research scholars.

Steps in Writing Research Report

Report writing is a time consuming and expensive exercise. Therefore, reports have to be very sharply focused in purpose content and readership. There is no single universally acceptable method of writing a research report.

Following are the general steps in writing a research report:

Analysis of the subject matter

Research outline, preparation of rough draft, rewriting and polishing, writing the final draft.

This is the first and important step in writing a research report. It is concerned with the development of a subject. Subject matter should be written in a clear, logical and concise manner. The style adopted should be open, straightforward and dignified and folk style language should be avoided.

The data, the reliability and validity of the results of the statistical analysis should be in the form of tables, figures and equations. All redundancy in the data or results presented should be eliminated.

The research outline is an organisational framework prepared by the researcher well in advance. It is an aid to logical organisation of material and a reminder of the points to be stressed in the report. In the process of writing, if need be, outline may be revised accordingly.

Time and place of the study, scope and limitations of the study, study design, summary of pilot study, methods of data collection, analysis interpretation, etc., may be included in a research outline.

Having prepared the primary and secondary data, the researcher has to prepare a rough draft. While preparing the rough draft, the researcher should keep the objectives of the research in mind, and focus on one objective at a time. The researcher should make a checklist of the important points that are necessary to be covered in the manuscript. A researcher should use dictionary and relevant reference materials as and when required.

This is an important step in writing a research report. It takes more time than a rough draft. While rewriting and polishing, a researcher should check the report for weakness in logical development or presentation. He should take breaks in between rewriting and polishing since this gives the time to incubate the ideas.

The last and important step is writing the final draft. The language of the report should be simple, employing appropriate words and expressions and should avoid vague expressions such as ‘it seems’ and ‘there may be’ etc.

It should not used personal pronouns, such as I, We, My, Us, etc and should substitute these by such expressions as a researcher, investigator, etc. Before the final drafting of the report, it is advisable that the researcher should prepare a first draft for critical considerations and possible improvements. It will be helpful in writing the final draft. Finally, the report should be logically outlined with the future directions of the research based on the work completed.

Precautions for Writing Research Reports

A research report is a means of conveying the research study to a specific target audience. The following precautions should be taken while preparing a research report:

• Its hould belong enough to cover the subject and short enough to preserve interest.
• It should not be dull and complicated.
• It should be simple, without the usage of abstract terms and technical jargons.
• It should offer ready availability of findings with the help of charts, tables and graphs, as readers prefer quick knowledge of main findings.
• The layout of the report should be in accordance with the objectives of the research study.
• There should be no grammatical errors and writing should adhere to the techniques of report writing in case of quotations, footnotes and documentations.
• It should be original, intellectual and contribute to the solution of a problem or add knowledge to the concerned field.
• Appendices should been listed with respect to all the technical data in the report.
• It should be attractive, neat and clean, whether handwritten or typed.
• The report writer should refrain from confusing the possessive form of the word ‘it’ is with ‘it’s.’ The accurate possessive form of ‘it is’ is ‘its.’ The use of ‘it’s’ is the contractive form of ‘it is.
• A report should not have contractions. Examples are ‘didn’t’ or ‘it’s.’ In report writing, it is best to use the non-contractive form. Therefore, the examples would be replaced by ‘did not’ and ‘it is.’ Using ‘Figure’ instead of ‘Fig.’ and ‘Table’ instead of ‘Tab.’ will spare the reader of having to translate the abbreviations, while reading. If abbreviations are used, use them consistently throughout the report. For example, do not switch among ‘versus,’ and ‘vs’.
• It is advisable to avoid using the word ‘very’ and other such words that try to embellish a description. They do not add any extra meaning and, therefore, should be dropped.
• Repetition hampers lucidity. Report writers must avoid repeating the same word more than once within a sentence.
• When you use the word ‘this’ or ‘these’ make sure you indicate to what you are referring. This reduces the ambiguity in your writing and helps to tie sentences together.
• Do not use the word ‘they’ to refer to a singular person. You can either rewrite the sentence to avoid needing such a reference or use the singular ‘he or she.’

Types of Research Report

Research reports are designed in order to convey and record the information that will be of practical use to the reader. It is organized into distinct units of specific and highly visible information. The kind of audience addressed in the research report decides the type of report.

Research reports can be categorized on the following basis:

Classification on the Basis of Information

Classification on the basis of representation.

Following are the ways through which the results of the research report can be presented on the basis of information contained:

Technical Report

A technical report is written for other researchers. In writing the technical reports, the importance is mainly given to the methods that have been used to collect the information and data, the presumptions that are made and finally, the various presentation techniques that are used to present the findings and data.

Following are main features of a technical report:

• Summary: It covers a brief analysis of the findings of the research in a very few pages. 
• Nature: It contains the reasons for which the research is undertaken, the analysis and the data that is required in order to prepare a report. 
• Methods employed: It contains a description of the methods that were employed in order to collect the data. 
• Data: It covers a brief analysis of the various sources from which the data has been collected with their features and drawbacks 
• Analysis of data and presentation of the findings: It contains the various forms through which the data that has been analysed can be presented. 
• Conclusions: It contains a brief explanation of findings of the research. 
• Bibliography: It contains a detailed analysis of the various bibliographies that have been used in order to conduct a research. 
• Technical appendices: It contains the appendices for the technical matters and for questionnaires and mathematical derivations. 
• Index: The index of the technical report must be provided at the end of the report.

Popular Report

A popular report is formulated when there is a need to draw conclusions of the findings of the research report. One of the main points of consideration that should be kept in mind while formulating a research report is that it must be simple and attractive. It must be written in a very simple manner that is understandable to all. It must also be made attractive by using large prints, various sub-headings and by giving cartoons occasionally.

Following are the main points that must be kept in mind while preparing a popular report:

• Findings and their implications : While preparing a popular report, main importance is given to the findings of the information and the conclusions that can be drawn out of these findings.
• Recommendations for action : If there are any deviations in the report then recommendations are made for taking corrective action in order to rectify the errors.
• Objective of the study : In a popular report, the specific objective for which the research has been undertaken is presented.
• Methods employed : The report must contain the various methods that has been employed in order to conduct a research.
• Results : The results of the research findings must be presented in a suitable and appropriate manner by taking the help of charts and diagrams.
• Technical appendices : The report must contain an in-depth information used to collect the data in the form of appendices.

Following are the ways through which the results of the research report can be presented on the basis of representation:

• Writtenreport
• Oral report

Written Report

A written report plays a vital role in every business operation. The manner in which an organization writes business letters and business reports creates an impression of its standard. Therefore, the organization should emphasize on the improvement of the writing skills of the employees in order to maintain effective relations with their customers.

Writing effective written reports requires a lot of hard work. Therefore, before you begin writing, it is important to know the objective, i.e., the purpose of writing, collection and organization of required data.

Oral Report

At times, oral presentation of the results that are drawn out of research is considered effective, particularly in cases where policy recommendations are to be made. This approach proves beneficial because it provides a medium of interaction between a listener and a speaker. This leads to a better understanding of the findings and their implications.

However, the main drawback of oral presentation is the lack of any permanent records related to the research. Oral presentation of the report is also effective when it is supported with various visual devices, such as slides, wall charts and whiteboards that help in better understanding of the research reports.

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Data Collection in Research

Methods of collecting data.

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• Operation Research Models
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• Linear Programming Graphic Solution
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• Linear Programming Artificial Variable Technique
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• Project Network Analysis Methods
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• What is Operations Strategy?
• Operations Competitive Dimensions
• Operations Strategy Formulation Process
• What is Strategic Fit?
• Strategic Design Process
• Focused Operations Strategy
• Corporate Level Strategy
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• Factors Considered in Supply Chain Planning
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• Supply Chain Process Restructuring
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• Supply Chain Operations Reference (SCOR) Model
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• Internal and External Performance Measures
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Service Operations Management

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• Vendor Managed Inventory
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• Supplier Evaluation and Selection in Procurement
• Blacklisting of Suppliers in Procurement
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• Contract Cancellation in Procurement
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Strategic Management

• What is Strategic Management?
• What is Value Chain Analysis?
• Mission Statement
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• What is SWOT Analysis?
• What is Competitive Advantage?
• What is Vision?
• What is Ansoff Matrix?
• Prahalad and Gary Hammel
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• What is PESTLE Analysis?
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• What is Technology Life Cycle?
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• Resources and Capabilities of Organization
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Top 11 characteristics of a good report.

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This article throws light upon the top eleven characteristics of a good report. The characteristics are: 1. Simplicity 2. Clarity 3. Brevity 4. Positivity 5. Punctuation 6. Approach 7. Readability 8. Accuracy 9. Logical Sequence 10. Proper Form 11. Presentation.

Characteristic # 1. Simplicity:

The language shall be as simple as possible so that a report is easily understandable. Jargons and technical words should be avoided. Even in a technical report there shall be restricted use of technical terms if it has to be presented to laymen.

Characteristic # 2. Clarity:

The language shall be lucid and straight, clearly expressing what is intended to be expressed. For that the report has to be written in correct form and following correct steps.

Characteristic # 3. Brevity:

A report shall not be unnecessarily long so that the patience of the reader is not lost and there is no confusion of ideas. But, at the same time, a report must be complete. A report is not an essay.

Characteristic # 4. Positivity:

As far as possible positive statements should be made instead of negative ones. For example, it is better to say what should be done and not what should not be done.

Characteristic # 5. Punctuation :

Punctuations have to be carefully and correctly used otherwise the meaning of sentences may be misunder­stood or misrepresented.

Characteristic # 6. Approach:

There are two types of approaches: (a) Per­son—When a report is written based on personal enquiry or obser­vations, the approach shall be personal and the sentences shall be in the first person and in direct speech, (b) Impersonal—When a report is prepared as a source of information and when it is merely factual (e.g. a report on a meeting), the approach shall be impersonal and the sentences shall be in the third person and in indirect speech.

Characteristic # 7. Readability:

The keynote of a report is readability. The style of presentation and the diction (use of words) shall be such that the readers find it attractive and he is compelled to read the report from the beginning to the end.’ Then only a report serves its purpose. A report on the same subject matter can be written differ­ently for different classes of readers.

Characteristic # 8. Accuracy:

A report shall be accurate when facts are stated in it. It shall not be biased with personal feelings of the writer.

Characteristic # 9. Logical Sequence:

The points in a report shall be arranged with a logical sequence, step by step and not in a haphazard manner. A planning is necessary before a report is prepared.

Characteristic # 10. Proper Form:

A report must be in the proper form. Some­times there are statutory forms to follow.

Characteristic # 11. Presentation:

A report needs an attractive presentation. It depends on the quality of typing or printing as well as quality of paper used. Big companies make very attractive and colourful Annual Reports.

Related Articles:

• Principles of a Good Research Report
• Report Control System in Large Organisations | Preparation of a Report

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Literature Review

12 Best Tools For Perfect Research Summary Writing

Discover the 12 best tools to streamline your research summary writing, ensuring clarity and precision every time.

Aug 29, 2024

Consider you finally find the time to tackle that research paper for your class. You pull up your literature search and see dozens of articles and studies staring back at you. As you scroll through the titles and abstracts, you realize you need to figure out how to summarize the research to get started on your paper. 

Writing a practical research summary can feel daunting, but it doesn’t have to. In this guide, we’ll break down what a research summary is, why it’s essential, and how to write one. This information lets you confidently write your research summary and finish your paper. 

Otio’s AI research and writing partner can help you write efficient research summaries and papers. Our tool can summarize academic articles so you can understand the material and finish your writing.

Table Of Contents

What is a research summary, purpose of a research summary, how do you write a research summary in 10 simple steps, what is a phd research summary, examples of research summary, supercharge your researching ability with otio — try otio for free today.

A research summary is a piece of writing that summarizes your research on a specific topic. Its primary goal is to offer the reader a detailed study overview with critical findings. A research summary generally contains the structure of the article. 

You must know the goal of your analysis before you launch a project. A research overview summarizes the detailed response and highlights particular issues. Writing it may be troublesome. You want to start with a structure in mind to write a good overview. 

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A research summary provides a brief overview of a study to readers. When searching for literature, a reader can quickly grasp the central ideas of a paper by reading its summary. It is also a great way to elaborate on the significance of the findings, reminding the reader of the strengths of your main arguments. 

Having a good summary is almost as important as writing a research paper. The benefit of summarizing is showing the "big picture," which allows the reader to contextualize your words. In addition to the advantages of summarizing for the reader, as a writer, you gain a better sense of where you are going with your writing, which parts need elaboration, and whether you have comprehended the information you have collected. 

1. Read The Entire Research Paper

Before writing a research summary , you must read and understand the entire research paper. This may seem like a time-consuming task, but it is essential to write a good summary. Make sure you know the paper's main points before you begin writing.

2. Take Notes As You Read

As you read, take notes on the main points of the paper. These notes will come in handy when you are writing your summary. Be sure to note any necessary information, such as the main conclusions of the author's writing. This helpful tip will also help you write a practical blog summary in less time.

3. Organize Your Thoughts

Once you have finished reading and taking notes on the paper, it is time to start writing your summary. Before you begin, take a few minutes to organize your thoughts. Write down the main points that you want to include in your summary. Then, arrange these points in a logical order.

4. Write The Summary

Now that you have organized your thoughts, it is time to start writing the summary. Begin by stating the author’s thesis statement or main conclusion. Then, briefly describe each of the main points from the paper. Be sure to write clearly and concisely. When you finish, reread your summary to ensure it accurately reflects the paper's content.

5. Write The Introduction

After you have written the summary, it is time to write the introduction. The introduction should include an overview of the paper and a summary description. It should also state the main idea.

6. Introduce The Report's Purpose

The summary of a research paper should include a brief description of the paper's purpose. It should state the paper's thesis statement and briefly describe each of the main points of the paper.

7. Use Keywords To Introduce The Report

When introducing the summary of a research paper, use keywords familiar to the reader. This will help them understand the summary and why it is essential.

8. State The Author's Conclusions

The summary of a research paper should include a brief statement of the author's conclusions. This will help your teacher understand what the paper is trying to achieve.

9. Keep It Concise

A summary should be concise and to the point. It should not include any new information or arguments. It should be one paragraph long at maximum.

10. Edit And Proofread

After you have written the summary, edit and proofread it to ensure it is accurate and precise. This will help ensure that your summary is effective and free of any grammar or spelling errors.

1. Otio: Your AI Research Assistant  

Knowledge workers, researchers, and students today need help with content overload and are left to deal with it using fragmented, complex, and manual tooling. Too many settle for stitching together complicated bookmarking, read-it-later, and note-taking apps to get through their workflows. Now that anyone can create content with a button, this problem will only worsen. Otio solves this problem by providing researchers with one AI-native workspace. It helps them: 

1. Collect a wide range of data sources, from bookmarks, tweets, and extensive books to YouTube videos. 

2. extract key takeaways with detailed ai-generated notes and source-grounded q&a chat. , 3. create draft outputs using the sources you’ve collected. .

Otio helps you to go from a reading list to the first draft faster. Along with this, Otio also enables you to write research papers/essays faster. Here are our top features that researchers love: AI-generated notes on all bookmarks (Youtube videos, PDFs, articles, etc.), Otio enables you to chat with individual links or entire knowledge bases, just like you chat with ChatGPT, as well as AI-assisted writing. 

Let Otio be your AI research and writing partner — try Otio for free today ! 

2. Hypotenuse AI: The Versatile Summarizer  

Like all the AI text summarizers on this list, Hypotenuse AI can take the input text and generate a short summary. One area where it stands out is its ability to handle various input options: You can simply copy-paste the text, directly upload a PDF, or even drop a YouTube link to create summaries. 

You can summarize nearly 200,000 characters (or 50,000 words) at once. 

Hypotenuse AI summarizes articles, PDFs, paragraphs, documents, and videos. 

With the AI tool, you can create engaging hooks and repurpose content for social media. 

You'll need a paid plan after the 7-day free trial. 

There needs to be a free plan available. 

The AI tool majorly focuses on generating eCommerce and marketing content. 

3. Scalenut: The Beginner-Friendly AI Summarizer  

Scalenut is one of the powerful AI text summarizers for beginners or anyone starting out. While it's not as polished as some other business-focused apps, it's significantly easier to use — and the output is just as good as others. If you want a basic online text summarizer that lets you summarize the notes within 800 characters (not words), Scalenut is your app. 

With Scalenut, you get a dedicated summary generation tool for more granular control. 

The keyword planner available helps build content directly from the short and sweet summaries. 

The AI tool integrates well with a whole suite of SEO tools, making it a more SEO-focused summarizer. 

You only get to generate one summary per day. 

Scalenut's paid plans are expensive compared to other AI tools. 

You must summarize long-form articles or blogs at most the limit of 800 characters. 

4. SciSummary: The Academic AI Summarizer  

SciSummary is an AI summarizer that helps summarize single or multiple research papers. It combines and compares the content summaries from research papers, article links, etc. 

It can save time and effort for scientists, students, and enthusiasts who want to keep up with the latest scientific developments. 

It can provide accurate and digestible summaries powered by advanced AI models that learn from feedback and expert guidance. 

It can help users read between the lines and understand complex scientific texts' main points and implications. 

It may only capture some nuances and details of the original articles or papers, which may be necessary for some purposes or audiences. 

Some types of scientific texts, such as highly technical, specialized, or interdisciplinary, may require more domain knowledge or context. 

Some sources of scientific information, such as websites, videos, or podcasts not in text format, may need help summarizing. 

5. Quillbot: The AI Summarizer for Academic Papers  

QuillBot uses advanced neural network models to summarize research papers accurately and effectively. The tool leverages cutting-edge technology to condense lengthy papers into concise and informative summaries, making it easier for users to navigate vast amounts of literature. 

You can upload the text for summarization directly from a document. 

It's excellent for summarizing essays, papers, and lengthy documents. 

You can summarize long texts up to 1200 words for free. 

The free plan is limited to professionals. 

There could have been some more output types. 

QuillBot's Premium plan only gives you 6000 words for summaries per month. 

6. Scribbr: The Research Paper Assistant  

Scribbr is an AI-driven academic writing assistant with a summarization feature tailored for research papers. The tool assists users in the research paper writing process by summarizing and condensing information from various sources, offering support in structuring and organizing content effectively. 

7. TLDR This: The Online Article Summarizer  

TLDR This uses advanced AI to effectively filter out unimportant arguments from online articles and provide readers only with vital takeaways. Its streamlined interface eliminates ads and distractions while summarizing key points, metadata, images, and other crucial article details. 

TLDR This condenses even very lengthy materials into compact summaries users can quickly consume, making it easier to process a vast range of internet content efficiently. 

Ten free "AI" summaries 

Summarization of long text 

Basic summary extraction 

Premium option cost 

No significant improvement in premium options 

8. AI Summarizer: The Text Document Summarizer  

AI Summarizer harnesses artificial intelligence to summarize research papers and other text documents automatically. The tool streamlines the summarization process, making it efficient and accurate, enabling users to extract essential information from extensive research papers efficiently. 

Easy-to-understand interface 

1500-word limit 

Multiple language support 

Contains advertisements 

Requires security captcha completion 

Struggles with lengthy content summarization 

9. Jasper: The Advanced Summarizer  

Jasper AI is a robust summarizing tool that helps users generate AI-powered paper summaries quickly and effectively. The tool supports the prompt creation of premium-quality summaries, assisting researchers in distilling complex information into concise and informative outputs. 

Jasper offers some advanced features, like generating a text from scratch and even summarizing it. 

It integrates well with third-party apps like Surfer, Grammarly, and its own AI art generator. 

It's versatile and can be used to create summaries of blogs, articles, website copy, emails, and even social media posts. 

There's no free plan available — though you get a 7-day free trial. 

You'll need to have a flexible budget to use Jasper AI. 

The Jasper app has a steep learning curve. 

10. Resoomer: The Summary Extractor  

Resoomer rapidly analyzes textual documents to determine the essential sentences and summarizes these key points using its proprietary semantic analysis algorithm. 

By automatically identifying what information matters most, Resoomer can condense elaborate texts across diverse subjects into brief overviews of their core message. With swift copy-and-paste functionality requiring no signup, this specialized tool simplifies the reading experience by extracting only vital details from complex writings. 

Clear and accurate summaries 

Creative sentence combining 

Variety of modes and options 

Lengthy text summarization without word limit in premium mode 

Confusing interface with irrelevant features 

Long-winded summaries spread across multiple pages 

11. Anyword: The Marketing-Focused Summarizer  

When I saw Anyword's summary, I could easily state that the content was unique and worth sharing, making this AI tool an excellent choice for marketers. Plus, it's very easy to use.  

Once you've copied-pasted the text and chosen a summary type, paragraph, keywords, or TL;DR, it generates a summary in minutes. Approve it; you can share the text directly without worrying about plagiarized content. 

You can test the AI tool with the 7-day free trial. 

The Anyword's text generator and summarizer are perfect for creating long-form pieces like blog posts with snippets. 

You can give detailed prompts to the AI tool to customize the generated text. 

Any word is expensive for a more limited set of features than other AI summarizers. 

It can sometimes be slower to use. 

There is no free Anyword plan available. 

12. Frase: The SEO Summarizer  

Frase is a powerful AI-powered summarizer that focuses on SEO. This means it can generate summaries that attract audiences and rank higher. Its proprietary model stands out, providing more flexibility, competitive pricing, and custom features. 

Frase uses BLUF and Reverse Pyramid techniques to generate summaries, improving ranking chances. 

It's free to use Frase's summary generator. 

Instead of GPT-3.5 or GPT-4, Frase uses its proprietary model. 

There's no way to add links to the blog or article to generate a summary. 

You can input up to 600-700 words for summarization. 

It might not be an ideal article summarizer for those who don't care about SEO. 

A research summary for a PhD is called a research statement . The research statement (or statement of research interests) is included in academic job applications. It summarizes your research accomplishments, current work, and future direction and potential. The statement can discuss specific issues such as funding history and potential requirements for laboratory equipment and space and other resources, possible research and industrial collaborations, and how your research contributes to your field's future research direction. 

The research statement should be technical but intelligible to all department members, including those outside your subdiscipline. So keep the “big picture” in mind. The strongest research statements present a readable, compelling, and realistic research agenda that fits well with the department's needs, facilities, and goals. Research statements can be weakened by: overly ambitious proposals lack of apparent direction lack of big-picture focus, and inadequate attention to the needs and facilities of the department or position. 

• Literature Search Template • ChatGPT Prompts For Research • How To Find Gaps In Research • Research Journal Example • How To Find Limitations Of A Study • How To Do A Literature Search • Research Concept Map • Meta-Analysis Methods • How To Identify Bias In A Source • Search Strategies For Research • Literature Search Template • How To Read A Research Paper Quickly • How To Evaluate An Article • ChatGPT Summarize Paper • How To Take Notes For A Research Paper

Research Summary Example 1: A Look at the Probability of an Unexpected Volcanic Eruption in Yellowstone 

Introduction  .

If the Yellowstone supervolcano erupted massively , the consequences would be catastrophic for the United States. The importance of analyzing the likelihood of such an eruption cannot be overstated.  

Hypothesis  

An eruption of the Yellowstone supervolcano would be preceded by intense precursory activity manifesting a few weeks up to a few years in advance.  

Results     

Statistical data from multiple volcanic eruptions happening worldwide show activity that preceded these events (in particular, how early each type of activity was detected).   

Discussion and Conclusion  

Given that scientists continuously monitor Yellowstone and that signs of an eruption are normally detected much in advance, at least a few days in advance, the hypothesis is confirmed. This could be applied to creating emergency plans detailing an organized evacuation campaign and other response measures.     

Research Summary Example 2: The Frequency of Extreme Weather Events in the US from 2000-2008 as Compared to the ‘50s

Weather events bring immense material damage and cause human victims.    

Extreme weather events are significantly more frequent nowadays than in the ‘50s.   

Several categories of extreme events occur regularly now and then: droughts and associated fires, massive rainfall/snowfall and associated floods, hurricanes, tornadoes, Arctic cold waves, etc.   

Discussion and Conclusion 

Several extreme events have become significantly more frequent recently, confirming this hypothesis. This increasing frequency correlates reliably with rising CO2 levels in the atmosphere and growing temperatures worldwide. 

In the absence of another recent significant global change that could explain a higher frequency of disasters, and knowing how growing temperature disturbs weather patterns, it is natural to assume that global warming (CO2) causes this increase in frequency. This, in turn, suggests that this increased frequency of disasters is not a short-term phenomenon but is here to stay until we address CO2 levels.  

Researchers, students, and knowledge workers have long struggled with the initial stages of research projects. The early steps of gathering and organizing information , taking notes, and synthesizing the material into a coherent summary are vital for establishing a solid foundation for any research endeavor. 

These steps can be tedious, overwhelming, and time-consuming. Otio streamlines this process so you can go from the reading list to the first draft faster. Along with this, Otio also helps you write research papers/essays faster. Here are our top features that researchers love: 

AI-generated notes on all bookmarks (Youtube videos, PDFs, articles, etc.), Otio enables you to chat with individual links or entire knowledge bases, just like you chat with ChatGPT, as well as AI-assisted writing. 

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Methodology

Research Methods | Definitions, Types, Examples

Research methods are specific procedures for collecting and analyzing data. Developing your research methods is an integral part of your research design . When planning your methods, there are two key decisions you will make.

First, decide how you will collect data . Your methods depend on what type of data you need to answer your research question :

• Qualitative vs. quantitative : Will your data take the form of words or numbers?
• Primary vs. secondary : Will you collect original data yourself, or will you use data that has already been collected by someone else?
• Descriptive vs. experimental : Will you take measurements of something as it is, or will you perform an experiment?

Second, decide how you will analyze the data .

• For quantitative data, you can use statistical analysis methods to test relationships between variables.
• For qualitative data, you can use methods such as thematic analysis to interpret patterns and meanings in the data.

Table of contents

Methods for collecting data, examples of data collection methods, methods for analyzing data, examples of data analysis methods, other interesting articles, frequently asked questions about research methods.

Data is the information that you collect for the purposes of answering your research question . The type of data you need depends on the aims of your research.

Qualitative vs. quantitative data

Your choice of qualitative or quantitative data collection depends on the type of knowledge you want to develop.

For questions about ideas, experiences and meanings, or to study something that can’t be described numerically, collect qualitative data .

If you want to develop a more mechanistic understanding of a topic, or your research involves hypothesis testing , collect quantitative data .

You can also take a mixed methods approach , where you use both qualitative and quantitative research methods.

Primary vs. secondary research

Primary research is any original data that you collect yourself for the purposes of answering your research question (e.g. through surveys , observations and experiments ). Secondary research is data that has already been collected by other researchers (e.g. in a government census or previous scientific studies).

If you are exploring a novel research question, you’ll probably need to collect primary data . But if you want to synthesize existing knowledge, analyze historical trends, or identify patterns on a large scale, secondary data might be a better choice.

Descriptive vs. experimental data

In descriptive research , you collect data about your study subject without intervening. The validity of your research will depend on your sampling method .

In experimental research , you systematically intervene in a process and measure the outcome. The validity of your research will depend on your experimental design .

To conduct an experiment, you need to be able to vary your independent variable , precisely measure your dependent variable, and control for confounding variables . If it’s practically and ethically possible, this method is the best choice for answering questions about cause and effect.

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Your data analysis methods will depend on the type of data you collect and how you prepare it for analysis.

Data can often be analyzed both quantitatively and qualitatively. For example, survey responses could be analyzed qualitatively by studying the meanings of responses or quantitatively by studying the frequencies of responses.

Qualitative analysis methods

Qualitative analysis is used to understand words, ideas, and experiences. You can use it to interpret data that was collected:

• From open-ended surveys and interviews , literature reviews , case studies , ethnographies , and other sources that use text rather than numbers.
• Using non-probability sampling methods .

Qualitative analysis tends to be quite flexible and relies on the researcher’s judgement, so you have to reflect carefully on your choices and assumptions and be careful to avoid research bias .

Quantitative analysis methods

Quantitative analysis uses numbers and statistics to understand frequencies, averages and correlations (in descriptive studies) or cause-and-effect relationships (in experiments).

You can use quantitative analysis to interpret data that was collected either:

• During an experiment .
• Using probability sampling methods .

Because the data is collected and analyzed in a statistically valid way, the results of quantitative analysis can be easily standardized and shared among researchers.

If you want to know more about statistics , methodology , or research bias , make sure to check out some of our other articles with explanations and examples.

• Chi square test of independence
• Statistical power
• Descriptive statistics
• Degrees of freedom
• Pearson correlation
• Null hypothesis
• Double-blind study
• Case-control study
• Research ethics
• Data collection
• Hypothesis testing
• Structured interviews

Research bias

• Hawthorne effect
• Unconscious bias
• Recall bias
• Halo effect
• Self-serving bias
• Information bias

Quantitative research deals with numbers and statistics, while qualitative research deals with words and meanings.

Quantitative methods allow you to systematically measure variables and test hypotheses . Qualitative methods allow you to explore concepts and experiences in more detail.

In mixed methods research , you use both qualitative and quantitative data collection and analysis methods to answer your research question .

A sample is a subset of individuals from a larger population . Sampling means selecting the group that you will actually collect data from in your research. For example, if you are researching the opinions of students in your university, you could survey a sample of 100 students.

In statistics, sampling allows you to test a hypothesis about the characteristics of a population.

The research methods you use depend on the type of data you need to answer your research question .

• If you want to measure something or test a hypothesis , use quantitative methods . If you want to explore ideas, thoughts and meanings, use qualitative methods .
• If you want to analyze a large amount of readily-available data, use secondary data. If you want data specific to your purposes with control over how it is generated, collect primary data.
• If you want to establish cause-and-effect relationships between variables , use experimental methods. If you want to understand the characteristics of a research subject, use descriptive methods.

Methodology refers to the overarching strategy and rationale of your research project . It involves studying the methods used in your field and the theories or principles behind them, in order to develop an approach that matches your objectives.

Methods are the specific tools and procedures you use to collect and analyze data (for example, experiments, surveys , and statistical tests ).

In shorter scientific papers, where the aim is to report the findings of a specific study, you might simply describe what you did in a methods section .

In a longer or more complex research project, such as a thesis or dissertation , you will probably include a methodology section , where you explain your approach to answering the research questions and cite relevant sources to support your choice of methods.

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Sustainable Construction Exploration: A Review of Multi-Recycling of Concrete Waste

• Review article
• Open access
• Published: 31 August 2024
• Volume 18 , article number  103 , ( 2024 )

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• Jeonghyun Kim   ORCID: orcid.org/0000-0003-2571-5152 1  

This paper provides an overview of literature on the multiple-time recycling of concrete waste and meticulously analyzes the research findings. The paper begins by reviewing the characteristics of recycled materials such as recycled coarse aggregate, recycled fine aggregate, and recycled powder obtained from concrete waste in relation to the recycling cycle. The influence of each of these materials on the mechanical properties and durability of next-generation concrete is analyzed. Moreover, this paper introduces strategies reported in the literature that aim to enhance the performance of multi-recycled concrete. Lastly, this paper identifies and highlights limitations and research gaps, while providing insightful recommendations to drive future exploration of multi-recycling of concrete.

Graphical Abstract

Literature review on multi-recycling of concrete waste.

Summary of effects of multi-recycling on properties of recycled materials/products.

Review of strengthening methods for multi-recycled concrete.

Identifying research gaps and proposing directions for future studies.

Avoid common mistakes on your manuscript.

Introduction

The utilization and recycling of concrete waste originated from the need for urban reconstruction following World War II (Buck 1977 ). In the present day, extensive research on recycling concrete waste has been undertaken to address issues such as landfill scarcity, the depletion of natural resources, and increased concern over environmental protection. Although most previous studies report that the performance of concrete containing recycled materials is inferior to that of concrete based on natural materials (Guo et al. 2018 ; Kim et al. 2016 ; Lin et al. 2023 ; Padmini et al. 2009 ), promising results have been reported, demonstrating the ability to produce concrete with performance similar to that of concrete made with natural materials through the application of various methods: reduced material replacement rate (Etxeberria et al. 2007 ; Ozbakkaloglu et al. 2018 ); improved mixing technique (Hiremath and Yaragal 2017 ; Sicakova and Urban 2018 ; Tam et al. 2007 ); material carbonation and CO 2 curing (Tam et al. 2020 ; Zhan et al. 2013 ); enhanced material quality (Kim 2022 ; Wei et al. 2021 ). Furthermore, replacing natural materials with recycled materials in concrete can reduce waste generation (Hossain et al. 2016 ; Martínez-Lage et al. 2020 ) and lower concrete production costs (Suárez Silgado et al. 2018 ). Due to these benefits, many studies have discussed various strategies to encourage the practical utilization of recycled concrete materials (De Brito and Silva 2016 ; Kim 2021 ; Ma et al. 2023 ; Makul et al. 2021 ).

Consequently, actual cases of utilizing recycled aggregates in real-scale concrete structures are being reported worldwide (Kim 2021 ; Li 2008 ; Poon and Chan 2007 ; Silva et al. 2019 ; Xiao et al. 2022a ; Yoda and Shintani 2014 ). Concrete containing recycled materials can generally be referred to as recycled concrete, but the term ‘recycled concrete’ used in literature commonly implies one-time recycling. Tomosawa et al. ( 2005 ) emphasize that if a recycled product cannot be recycled again, it will merely contribute to waste generation for the next generation. Therefore, recycling should aim to reproduce identical products in the original sense of the term, creating a loop.

In this context, there has been a growing interest in the multi-recyclability of concrete waste as a genuine contribution to sustainable development, with studies on this subject being consistently documented (Brito et al. 2006 ; Kim and Jang 2024 , 2022 ). The mechanical properties, durability, and economic and environmental benefits of multi-recycled concrete have been investigated by a few researchers. However, investigations into the repeated recycling of concrete have taken place relatively recently, resulting in a scarcity of comprehensive review on this topic. Therefore, the objective of this study is to conduct a thorough literature review on the multi-recycling of concrete waste. Commencing with an explanation of the conceptual distinctions between one-time and multiple-times recycling of concrete, this study reviews the effects of repeated recycling of concrete on the characteristics of recycled materials obtained from it. This paper also analyzes the effect of using these recycled materials on the properties of next-generation concrete and introduces methods to enhance the performance of multi-recycled concrete. Then, it reviews the environmental and economic analyses of multi-recycled concrete. To conclude, limitations and gaps of the literature are identified, and recommendations for further research are provided.

Multi-Recycling of Concrete

The concept of multi-recycling of concrete waste is presented in Fig.  1 . After undergoing specific recycling technologies, often involving crushing, concrete waste turns into recycled materials. In general, concrete waste can yield recycled coarse aggregate (RCA), recycled fine aggregate (RFA), and recycled powder (RP) (hereafter, recycled materials mentioned in this article refer to RCA, RFA, and RP), and concrete incorporating them can be classified into recycled coarse aggregate concrete (RCAC), recycled fine aggregate concrete (RFAC), and recycled powder concrete (RPC), respectively. This recycled concrete, which has undergone recycling once, is referred to as first-generation recycled concrete (RCAC1, RFAC1 and RCP1 depending on the recycled material used). Crushing the first-generation recycled concrete yields recycled materials again, which have been recycled twice (RCA2, RFA2 and RP2). These are prefixed with ‘multi’ and are designated as multi-recycled coarse aggregate (multi-RCA), multi-recycled fine aggregate (multi-RFA) and multi-recycled powder (multi-RP). And concrete incorporating these multi-recycled materials is termed multi-recycled concrete: multi-recycled coarse aggregate concrete (multi-RCAC), multi-recycled fine aggregate concrete (multi-RFAC), multi-recycled powder concrete (multi-RPC). An explanation of the key terms used in this study is provided in Table  1 .

Concept of multi-recycling of concrete (based on (Kim and Jang 2022 ))

Characteristics of Multi-Recycled Materials

Given that the quality of recycled concrete materials is one of the many factors influencing the properties of concrete (Kim 2022 ), it is of great significance to comprehend the influence of multi-recycling of concrete on material characteristics. Various indicators represent the quality of aggregates, with density and water absorption being the most commonly reported, and occasionally, attached mortar content, Los Angeles abrasion, and crushing index are reported.

The fluctuations of density and water absorption of RCA are shown in Fig.  2 a and b, respectively, clearly indicating a decrease in density and an increase in water absorption for increasing recycling cycles. Over three times of recycling, the density of multi-RCA can be reduced from 4.2% (Lei et al. 2023b ) to up to 24% (Huda and Alam 2014 ) than that of natural coarse aggregate (NCA). For water absorption, NCA exhibits clustered values of 0.32–1.8%, whereas the values for RCA and MRCA vary from 4.45 to 11.2%. In the same recycling cycle, the difference between the minimum and maximum absorption values tends to gradually increase as the number of recycling cycles increased. In previous studies, apart from a study by Yang et al. ( 2022 ), the variation between the minimum and maximum absorption values for RCA1 was 1.95%, the value that escalated to 2.73% and 3.74% for the second and third generations RCAs (RCA2 and RCA3, respectively). In Fig.  2 a and b, the lines representing both density and water absorption exhibit a steep slope during the first recycling (from NCA to RCA1) and then gradually level out during the second recycling (from RCA1 to RCA2) and the third recycling (from RCA2 to RCA3). As noted by Abreu et al. ( 2018 ), the characteristics of coarse aggregate stabilize as the recycling cycle increases.

Characteristics of coarse aggregates over the number of recycling cycles: a density; b water absorption; c LA abrasion; d crushing index (Abed et al. 2020 ; Abreu et al. 2018 ; Chen et al. 2020 ; Huda and Alam 2014 ; Kim and Jang 2022a; Lei et al. 2023b ; Salesa et al. 2022 , 2017a , b ; Visintin et al. 2022 ; Yang et al. 2022 ; Zhu et al. 2016 , 2019b )

Figure  2 c and d show the Los Angeles abrasion and crushing index of coarse aggregates. As the recycling cycle increases, there is a corresponding increase in both the abrasion and crushing index. Higher values for these properties indicate that the aggregate is more susceptible to abrasion and (Mohajerani et al. 2017 ; Zhang et al. 2017 ), suggesting that repeated recycling weakens the aggregate. In contrast, in studies by Salesa et al. ( 2017a , b ), the abrasion resistance of RCA1 was found to be stronger than that of NCA, but the studies did not note whether the RCA1 was obtained from concrete made with the NCA. Nonetheless, when comparing only RCA1, RCA2, and RCA3 used in these studies, it becomes clear that increasing the recycling cycle weakens the abrasion resistance of aggregate.

The above trend is also observed in RFA and RP. Figure  3 a and b show the change in density and water absorption of fine aggregate, and Fig.  3 c shows the change in powder density over the recycling cycle. The fine aggregate in the study by Jung ( 2023 ) and the powder in the study by Kim et al. ( 2023b ) were obtained by crushing multi-RCAC, and the fine aggregate in the studies by Zhu et al. ( 2018 , 2019a ) was obtained from multi-RFAC. However, a common observation across these studies is that as the recycling cycle of concrete increases, density decreases and water absorption increases.

Characteristics of recycled materials over the number of recycling cycles: a density; b water absorption of fine aggregate; c density of cement and recycled powder (Jung 2023 ; Kim et al. 2023b ; Zhu et al. 2018 , 2019a )

Based on the variations in the characteristic over recycling cycles (i.e., decreased density, increased water absorption, abrasion, and crushing index), it can be expected that multi-recycling of concrete diminishes recycled materials quality and is responsible for the poor performance of concrete with those materials. This degradation is attributed to the attached mortar, which makes them looser, more porous, and less rigid than natural materials (Tam et al. 2021 ). Figure  4 shows the attached mortar content in RCA as a function of recycling cycles. Kim et al. ( 2023a ) and Zhu et al. ( 2016 , 2019b ) reported attached mortar content of 32%, 55%, and 62% over three times of recycling, while Thomas et al. ( 2018 ) reported attached mortar content of up to 88% at the given recycling cycles.

Attached mortar content of coarse aggregate over the number of recycling cycles (Chen et al. 2020 ; Kim et al. 2023a ; Thomas et al. 2018 ; Zhu et al. 2016 , 2019b )

The increase in attached mortar content with increasing recycling cycles is associated with changes in the proportion of materials that make up the concrete. Since recycled aggregate contains a certain amount of attached mortar, the volume fraction of recycled concrete is larger than that of natural aggregate concrete (NAC). As a result, as the recycling cycle increases, the fraction of aggregate in concrete decreases, and the fraction of total mortar (fresh mortar and attached mortar) increases. Therefore, more recycled concrete consists of a larger volume of mortar, and the aggregate obtained from it has a higher attached mortar content (Fig.  5 ).

Material proportions of various concretes: a illustration of concretes with natural-, recycled-, and multi-recycled aggregates; b cross-section of the concretes (Thomas et al. 2020 )

Properties of Multi-Recycled Concrete

The attached mortar in RCA, RFA and RP increases their water absorption. Therefore, when water compensation methods, such as adding extra mixing water and increasing the plasticizer dosage, are not applied, the slump of recycled concrete is generally lower than that of natural concrete. Figure  6 shows the slump of RCAC, RFAC and RPC without the water compensation. As the number of recycling increases, the slump decreases noticeably. This can be attributed to the gradual increase in the water absorption of RCA and RFA, as reviewed in the previous section.

Variation in concrete slump over recycling cycles (Huda and Alam 2014 ; Jung 2023 ; Kim et al. 2023a ; Kim and Jang 2022 ; Salesa et al. 2017a )

Hence, to achieve comparable slump values, additional water is demanded, and the quantities of additional water reported in previous studies are listed in Table  2 . As expected, as the replacement rate and the number of recycling cycles increase, higher quantities of water are required. When replacing 25% of NCA with RCA, it demands 5.2% to 6.9% more mixing water during three times of recycling cycles, whereas 100% replacement requires 28.9% more water (Abreu et al. 2018 ). Similarly, RFA requires 6.4%, 19.2%, and 25.2% of additional water at replacement rates of 25%, 75%, and 100% to achieve similar slumps in the third recycling cycle (Zhu et al. 2018 ).

Due to the presence of additional factors influencing slump, such as particle shape and the moisture state of recycled materials, which were not addressed in the original research articles, an intercomparison between studies was not performed.

Air Content

An adequate level of air content in concrete improves its frost resistance (Hosseinzadeh and Suraneni 2021 ; Tanesi and Meininger 2007 ), while both insufficient and excessive air content can cause mechanical properties and durability-related issues (Özcan and Emin Koç, 2018 ; Wang et al. 2022a , b ). Hence, some specifications specify permissible air content ranges for concrete under specific exposure conditions (e.g. 3.5–7.5% depending on aggregate size for ASTM C94 (ASTM C94/C94M-21b, 2021 )).

Typically, recycled material-based concrete exhibits higher air content compared to natural material-based concrete. This is attributed to factors such as rough surface textures, greater angularity, and the presence of pores in the attached mortar (Silva et al. 2018 ). As the multi-recycling increases the attached mortar content, the air content in concrete increases progressively in proportion to the recycling cycle (Fig.  7 ). When concrete is recycled multiple times as coarse aggregate (i.e., multi-RCAC), the air content increases gradually. Huda and Alam ( 2014 ) reported air content of 3.6%, 3.9%, and 4.4% for the 1st, 2nd, and 3rd generations, respectively. The air content of NAC was 3.4%. Similar results were also reported in the following literature (Yang et al. 2022 ). Salesa et al. ( 2017a ) even reported no change in air content in the 1st and 2nd generations. Considering the tolerance of air content (e.g. ± 1.5% for ASTM C94 (ASTM C94/C94M-21b 2021 )), the effect of repeated recycling on the air content of concrete can be acceptable. However, unlike RCA, RFA can significantly affect the air content (Silva et al. 2018 ). In a study conducted by Jung (Jung 2023 ), the air content of concrete containing 30% RFA during the three generations was 5.4%, 6.2%, and 7.3%, showing a sharp increase compared to NAC (4.3%).

Variation in concrete air content over recycling cycles (Huda and Alam 2014 ; Jung 2023 ; Salesa et al. 2017a ; Yang et al. 2022 )

Compressive Strength

The most fundamental property of hardened concrete is its compressive strength. Figure  8 a and b show the 28-day compressive strength for multi-RCAC in absolute and relative scales, respectively. Most previous studies agree that multi-recycling has an unfavorable effect on the compressive strength of concrete. The compressive strength of RCAC decreases to 82.1–96.4% of NAC in the first recycling cycle, 83.4–93.8% in the second recycling cycle, and 57.6–90.1% in the third recycling cycle. The strength loss in RCAC is a consequence of the increased content of attached mortar in RCAs as the number of recycling cycles increases. As discussed earlier, RCAs become more porous with an increasing number of recycling cycles. Additionally, the compressive strength decreases with each recycling cycle due to a variety of complex factors, including the instability of the interfacial transition zone (ITZ) and the formation of micropores and cracks in RCA resulting from repeated crushing processes (Abreu et al. 2018 ; Huda and Alam 2014 ; Lee and Choi 2013 ; Zhu et al. 2019b ).

Compressive strength of multi-recycled coarse aggregate concrete over recycling cycles in absolute ( a ) and relative scales ( b ) (Abreu et al. 2018 ; Huda and Alam 2014 ; Lei et al. 2023b ; Salesa et al. 2017a ; Visintin et al. 2022 ; Yang et al. 2022 ; Zhu et al. 2016 , 2019b )

Conflicting trends have been found in the following studies (Salesa et al. 2017a ; Visintin et al. 2022 ). Salesa et al. reported an increase in compressive strength of 4.4–5.1% over three recycling cycles compared to that of NAC. The authors concluded that high-quality RCA obtained from precast members and the presence of unhydrated cement in the RCA contributed to the improvement in compressive strength. A similar case was also observed in the study by Kim et al. ( 2023a ). In that study, in which precast concrete members were crushed and used as RCA in concrete repeatedly, the compressive strength of RCAC up to the second recycling cycles was 99–111% of that of NAC. In a study by Visintin et al. ( 2022 ), the compressive strengths of RCAC1, RCAC2 and RCAC3 were 3.1–9.8% higher than that of the control concrete. The authors noted that the internal curing by the additional mixing water to compensate for the high water absorption of RCA would have resulted in the similar compressive strengths over the three times of recycling. According to a study by Domingo-Cabo et al. ( 2009 ), when the effective water-cement ratio is constant, several properties of concrete (slump, compressive strength and elastic modulus) can be similar regardless of RCA replacement rate, and Eckert and Oliveira ( 2017 ) reported that extra mixing water can improve the ITZ structure without significantly affecting the effective water-cement ratio. However, other studies, where the effective water-cement ratio was kept constant for concretes by adjusting additional water, report a decrease in compressive strength with the recycling cycle (Abreu et al. 2018 ; Zhu et al. 2016 , 2019b ). While there may be various factors contributing to these conflicting results, Sosa et al. ( 2021 ) highlight the uncertainty arising from the absence of a reliable method to quantify the actual effective water-cement ratio.

The compressive strength of concrete containing RFA and RP is shown in Fig.  9 . The change in compressive strength with respect to the recycling cycle is consistent with that of RCAC, i.e., a decrease in compressive strength as the recycling cycle increases. In particular, RP can cause significant strength loss at relatively low replacement rates, which is attributed not only to the micropores and cracks in RP itself but also to the replacement of cement by RP, reducing hydration products (Kim et al. 2023b ; Kourounis et al. 2007 ).

Compressive strength of multi-recycled fine and powder concretes over recycling cycles in absolute ( a ) and relative scales ( b ) (Kim and Jang 2022 ; Zhu et al. 2018 , 2019a )

Based on the above review, it can be concluded that, in general, multi-recycling has an unfavorable effect on the compressive strength of concrete. Identifying the factors that contribute to the deterioration of properties in repeatedly recycled concrete is essential for sustainability. Practically, it is nearly impossible to track how many times concrete has been recycled. Although studies specifically designed to investigate the effects of multi-recycling may use 100% recycled aggregate, it is uncommon for recycled aggregate to entirely replace natural aggregate in real-world structures. Additionally, industrial regulations in some countries restrict high replacement rates (Tam et al. 2018 ). Due to this complexity, it is necessary to identify the factors that lead to the deterioration of properties in multi-recycled concrete. To understand the relationship between the characteristics of recycled aggregates and the properties of the concrete containing them, Fig.  10 illustrates how the density and water absorption of recycled aggregates correlate with the compressive strength of the concrete, irrespective of the number of recycling cycles. Generally, an increase in aggregate density enhances the compressive strength of the concrete, whereas a higher aggregate water absorption diminishes it.

Relationship between specific gravity of aggregates and compressive strength of concrete ( a ) and water absorption of aggregates and compressive strength of concrete ( b ) (Yang et al. 2022 ; Salesa et al. 2017a ; Huda and Alam 2014 ; Abreu et al. 2018 ; Lei et al. 2023b ; Kim et al. 2023a ; Kim and Jang 2022 ; Zhu et al. 2016 , 2018 , 2019a , b )

Tensile Strength

Tensile strength is one of the crucial mechanical property of concrete since concrete cracks tend to occur in tension, exerting a significant influence on crack formation under load (Zain et al. 2002 ). Figure  11 illustrates the variation in tensile strength over recycling cycles. Generally, with an increase in the number of recycling cycles, the tensile strength decreases. This trend is commonly observed irrespective of the type of recycled materials. On rare occasions, some studies have reported an increase in tensile strength with an increase in recycling cycles. For instance, in a study by Huda and Alam ( 2014 ), the tensile strength of RCAC1 and RCAC2 was observed to be 3–4% higher than that of NAC. The authors interpreted this phenomenon as a decrease in the water-cement ratio in the ITZ due to absorption of mixing water by the RCA. Consequently, the reduced water-cement ratio enhances the bond between RCA and the cement paste. However, in the case of R3, the tensile strength sharply decreased, and the authors attributed this to the low quality of RCA and the multiple layers of ITZ. Similar results were also reported by Yang et al. ( 2022 ).

Tensile strength of multi-recycled concretes over recycling cycles: a and b concrete with multi-recycled coarse aggregate in absolute and relative scale; c and d concrete with multi-recycled fine aggregate and powder in absolute and relative scale (Yang et al. 2022 ; Visintin et al. 2022 ; Huda and Alam 2014 ; Abreu et al. 2018 ; Kim et al. 2023a ; Kim and Jang 2022 ; Zhu et al. 2016 , 2018 , 2019b )

Drying Shrinkage

Drying shrinkage occurs when water in the pores of the cementitious matrix evaporates in a dry environment (Wu et al. 2017 ). Due to the characteristics of recycled materials, such as low stiffness, high porosity, and water absorption, recycled concrete has weak resistance to shrinkage deformation (Mao et al. 2021 ; Wang et al. 2020 ; Wu et al. 2022 ; Xiao et al. 2022b ). The characteristics of recycled materials further deteriorate with repeated recycling, causing concrete recycled for more cycles to exhibit greater shrinkage than concrete recycled for fewer cycles. Silva et al. ( 2021 ) and Kim et al. ( 2023a ) recorded the drying shrinkage of multi-RCAC for 91 days, respectively. Silva et al. ( 2021 ) reported that drying shrinkage is associated with an increase in both aggregate replacement rates and recycling cycles (Fig.  12 a). Similarly, Kim et al. ( 2023a ) noted that drying shrinkage increases as the recycling cycle increases but suggested that the mix design method, so called an equivalent mortar volume (EMV) method (Fathifazl et al. 2009 ; Kim et al. 2016 ; Yang and Lee 2017 ), which deducts the amount of new mortar equal to the amount of mortar attached to RCA, can help suppress drying shrinkage. According to the study, the drying shrinkage of EMV-based concrete with 100% RCA in the 1st-, 2nd- and 3rd generations was 8.5%, 12.2%, and 5.5% lower than that of concrete proportioned by a traditional mix design (Fig.  12 b).

Drying shrinkage of multi-recycled aggregate concrete by Silva et al. ( 2021 ) ( a ) and Kim et al. ( 2023a ) ( b )

One notable difference between the two studies is shrinkage deformation at early ages: Silva et al. ( 2021 ) found that the shrinkage behavior of NAC and RCAC was similar regardless of the recycling cycle up to 7 days, whereas the study by Kim et al. ( 2023a ) showed clear differences in drying shrinkage deformation caused by the recycling cycle at 7 days. In the former study, the moisture compensation for achieving consistent workability was carried out at each recycling cycle, while in the latter case, it was not. Additional water absorbed into RCA is later released, acting as a moisture source for curing, and this internal curing effect can delay the initial drying shrinkage of multi-recycled concrete (Yildirim et al. 2015 ; Zhang et al. 2013 ; Zhutovsky and Kovler 2017 ).

Water Absorption

Water is the main transport medium for the penetration of harmful substances such as chlorides and sulfides into the pore structure of concrete (Wang et al. 2019 ). Therefore, understanding the movement of water in concrete is important from a durability perspective and some researchers have investigated the relevant properties. Figure  13 shows water absorption of concrete by immersion. As expected, the absorption capacity increases with the number of recycling cycles, and this trend is similarly observed in absorption through capillary action as shown in Fig.  14 . Both of these properties are associated with porosity (Silva et al. 2021 ). Due to the presence of attached mortar, which increases with repeated recycling, recycled aggregates and RP exhibit higher porosity and water absorption capacity than natural aggregates and cement, respectively, leading to more permeable pores. These changes affect the absorption capacity of the next-generation concrete (Salesa et al. 2017b ).

Water absorption of multi-recycled concretes over recycling cycles (Kim et al. 2023a ; Salesa et al. 2017a , b ; Silva et al. 2021 ; Thomas et al. 2020 ; Visintin et al. 2022 )

Water absorption of multi-recycled concretes over recycling cycles by immersion ( a ) and capillary action ( b ) (Silva et al. 2021 )

Chloride Penetration Resistance

Chloride resistance is a key indicator of concrete durability. Due to variations in the quality of recycled materials, as discussed in previous sections, the resistance of multi-recycled concrete to chloride penetration weakens with an increasing number of recycling cycles. Zhu et al. ( 2019b ) and Kim et al. ( 2023a ) demonstrated a weakening of chloride resistance in RCAC due to repeated recycling, based on the increase in electrical conductivity with recycling cycles. In the former study, the charge passed during three recycling cycles increased from 1537 to 3300 C, while in the latter study, it increased from 2931 to 4331 C over three recycling cycles. Silva et al. ( 2021 ) and Zhu et al. ( 2019b ) also reported an increase in the chloride diffusion coefficient of RCAC by 47.4% and 85%, respectively, compared to that of NAC after three recycling cycles. The deterioration in chloride resistance can be more pronounced when RFA is repeatedly recycled. In another study conducted by Zhu et al. ( 2018 ), the diffusion coefficient of concrete using 100% RFA ranged from 1.33 × 10 –12 m 2 /s to 3.50 × 10 –12 m 2 /s over three recycling cycles, which was 233%, 419%, and 614% higher than that of NAC. Nevertheless, with the chloride diffusion coefficient of multi-RCAC and multi-RFAC satisfying the 100-year design life requirement in severe environments specified in the Chinese code (GB 50010-2010), the authors concluded that the feasibility of multi-recycling of concrete is promising.

Carbonation Resistance

Carbonation is a chemical reaction where hydrated cement paste reacts with CO 2 . This promotes a decrease in the pH of concrete, which is also associated with the corrosion of reinforcement bars.

The lower quality of recycled materials, characterized by low density, high porosity, and microcracks compared to natural materials, is known to promote CO 2 influx, reducing the carbonation resistance of concrete containing them (Silva et al. 2015 ; Tang et al. 2018 ). As multi-recycling further deteriorates these characteristics of recycled materials, a gradual decrease in carbonation resistance of multi-recycled concrete with increasing recycling cycles is expected, and indeed, such experimental results have been reported in studies (Silva et al. 2021 ; Zhu et al. 2019a ).

The carbonation resistance of multi-recycled concrete is further deteriorated in aggressive environments. After undergoing 300 freeze–thaw cycles, the carbonation depth of RCAC3 increased by more than double (117.3%) compared to the concrete before freeze–thaw action (Liu et al. 2021 ). Furthermore, the carbonation depth of RCAC1 and RCAC2, exposed to chloride ions, increased by 2.5 times and 2.7 times, respectively, compared to their pre-exposure levels (Chen et al. 2020 ). Both freeze–thaw action and chloride penetration loosen the pore structure of concrete, increasing its porosity. This increased porosity facilitates the CO 2 diffusion, resulting in a decrease in carbonation resistance. Nonetheless, the authors emphasize the promising result that the carbonation resistance of multi-recycled concretes exposed to harsh environments satisfied the 50-year design service life requirements of the design code (JGJ/T193-2009 and GB/T 50476-2019).

Frost Resistance

Frost resistance of concrete refers to the ability of concrete to withstand freeze–thaw cycles without significant damage and is a key parameter that determines the service life of concrete in cold regions. Generally, recycled materials absorb more water and this absorbed water is discharged into the cement paste, weakening its cold resistance. Zhu et al. ( 2019b ) investigated the frost resistance of multi-RCAC. During 800 freeze–thaw cycles, both the dynamic elastic modulus and weight decreased in the order of NAC, RCAC1, RCAC2, and RCAC3 (i.e., NAC has the highest modulus and weight, while RCAC3 has the lowest). In particular, RCAC3 after 600 cycles showed a higher mass loss than RCAC2 after 800 cycles of freeze–thaw, clearly indicating a deterioration in frost resistance as concrete was repeatedly recycled. To complement this, Wang et al. ( 2022a , b ) have stated that, in order to maintain a multi-cycle recycling system in an environment subject to freeze–thaw action, the parent concrete needs to be a high-performance concrete to prevent durability damage during its service life.

Microstructural Analysis

The scanning electron microscope results of concretes undergoing three cycles of recycling are shown in Fig.  15 . For NAC, one ITZ between the NCA and the fresh mortar is observed, along with a few microcracks due to moisture evaporation (Fig.  15 a). As recycling progresses multiple times, the cement matrix becomes complex. In RCAC1, there are two ITZs: ITZ1 between NCA and the existing hardened mortar, and ITZ2 between this RCA1 and the new mortar (Fig.  15 b). RCAC2 has three ITZs, including the two observed in RCAC1 and ITZ3 between RCA2 and the fresh mortar (Fig.  15 c). RCAC3 shows four ITZs, including the three observed in RCAC2 and ITZ4 between RCA3 and the fresh mortar (Fig.  15 d) (Belabbas et al. 2024 ). The ITZ is a weak point where concrete is more prone to cracking. In particular, the ITZ between new and old mortar provides a weaker bond than the ITZ between aggregate and mortar (Zuo et al. 2020 ). This explains why the performance of concrete recycled more times is lower than that of concrete recycled fewer times.

Scanning electron microscopy analysis of concrete with various recycling cycles (Belabbas et al. 2024 )

Performance Enhancement of Multi-Recycled Concrete

Reduction in replacement rate of recycled materials.

One of the simplest way to mitigate performance loss in recycled concrete is to reduce the replacement of natural materials with recycled ones (Bai et al. 2020 ; Kim et al. 2022 ). Some studies have attempted to compensate for the performance loss from multi-recycling by including natural aggregate in each recycling cycle (Abed et al. 2020 ; Marie and Quiasrawi 2012 ; Shmlls et al. 2022 ). For example, in a study by Marie and Quiasrawi ( 2012 ), RCAC1 was prepared with 20% RCA replacement rate (i.e., 80% of the coarse aggregate in RCAC1 was natural aggregate), from which RCA2 was obtained. RCAC2 was prepared with 20% RCA2 (i.e., 80% of the coarse aggregate in RCAC2 was natural aggregate) (Fig.  16 ). As shown in Table  3 , this approach enhanced the workability, mechanical strength, and water absorption of the second generation RCAC. However, it should be noted that the environmental benefits diminish as natural aggregate is used for each recycling cycle. Furthermore, due to the 80% NCA used in RCAC1, the RCA2 obtained from RCAC1 does not truly represent ‘multi-recycled’ aggregate.

Multi-recycling of concrete with and without natural aggregates

Carbonation of Recycled Materials

In recent times, numerous studies have emerged focusing on the utilization of CO 2 in concrete. When the hydration products in RCA, RFA, and RP are exposed to CO 2 , calcium carbonate and silica gel are formed, and this reaction fills the pores and cracks of the recycled materials, making the microstructure dense (Fang et al. 2021 ; Lu et al. 2018 ; Luo et al. 2018 ; Xuan et al. 2017 ). Liu et al. ( 2022 ) applied this carbonation technique to second-generation RCA and investigated the effect of its use on the properties of concrete. The RCA2 was carbonated under the following conditions: a temperature of 20 °C; relative humidity of 55%; CO 2 concentration of 20%, and a CO 2 gas pressure of 0.5 MPa. Table 4 shows the characteristics of RCAs before and after carbonation treatment, and the properties of concrete containing the RCAs. The carbonated RCA2 has better characteristics (higher density, lower water absorption) as an aggregate for concrete than non-carbonated RCA2. The quality of aggregates plays a crucial role in concrete performance (Kim 2022 ); consequently, concrete containing carbonated RCA2 exhibits higher compressive strength, a denser pore structure, and improved durability. In particular, it is worth noting that concrete containing carbonated RCA2 performed better than RCAC1, suggesting the possibility that carbonation treatment can offset performance losses by multi-recycling. A positive effect of carbonated RCA can also be found in other study (Wang et al. 2022a , b ).

Vibration Mixing

Yang et al. ( 2022 ) investigated the effect of vibration mixing on multi-recycled concrete. Table 5 summarizes the properties of vibrated and non-vibrated concretes, showing that the vibrated concrete exhibits better workability and strengths. This performance improvement is attributed to vibration breaking the viscous connection between cement particles, preventing the cement agglomeration and allowing RCA to be better coated with fresh mortar (Xiong et al. 2019 ; Zhao et al. 2021 ). This vibration mixing method has the advantage of being applicable without changing the mixing components of concrete.

As represented in Fig.  5 , due to the presence of attached mortar, recycled concrete exhibits a larger volume of mortar compared to NAC, with a smaller proportion of original aggregates. To control this imbalance in material proportions, the EMV mix design method has been proposed (Fathifazl et al. 2009 ). The primary principle of the EMV method is to offset the volume of fresh mortar by the volume of attached mortar, thereby making the total mortar volume of recycled concrete equivalent to that of NAC. The performance efficiency and environmental benefits of this method have been reported in various literature (Fathifazl et al. 2011 ; Jiménez et al. 2014 ; Rajhans et al. 2019 ; Yang and Lee 2017 ). Kim et al. ( 2023a ) applied the EMV method to multi-cycle recycling. The EMV-based concretes with the same material volume were prepared and tested over three recycling cycles. and the test results are summarized in Table  6 . While concrete designed using conventional methods demonstrated a gradual loss of performance with increasing recycling cycles, the EMV-based concrete exhibited no obvious loss in the performance at each recycling cycle, indicating the importance of mix design that takes into account the characteristics of recycled aggregate.

Use of Plasticizer

As mentioned in the previous section, it was discussed that one of the consequences of multi-recycling is a reduction in concrete workability. In response, Kim et al. ( 2023c ) aimed to improve the workability of RCAC3 by increasing the plasticizer dosage and investigated its influence on the concrete properties. In the study, plasticizer dosages in RCAC3 were increased from 0.8 to 1.2% of cement in 0.1% increments. Except for the plasticizer dosage, the rest of the mix design remained the same, and the control group was RCAC1 with 0.8% plasticizer. Table 7 summarizes the experimental results. The slump of RCAC3 increased with increasing plasticizer dosage. In addition, for the hardened properties, the density, mechanical strength, and capillary absorption were improved, and some properties (tensile strength and capillary absorption) achieved similar performance to that of the RCAC1 as the plasticizer dosage was increased to 1.0%. This is related to the fact that free water due to the increase in plasticizer is used to promote hydration of the cement (Zhao et al. 2021 ). However, this positive effect diminishes when the plasticizer dosage exceeds the threshold. Therefore, the authors recommended determining the appropriate dosage.

Environmental and Economic Analysis of Multi-Recycled Concrete

The environmental aspects of multi-recycling of concrete have been discussed in some studies. In a study by Visintin et al. ( 2022 ), it was found that the benefits of using RCA were insignificant as the process of recycling concrete waste into aggregate is similar to the process of converting natural stone into aggregate. However, the authors noted that the effect of transportation distance should be investigated. Generally, in urban areas, the generation of construction waste and the demand for concrete coexist, resulting in shorter transportation distances for RCA compared to NCA. In the life cycle assessment by Lei et al. ( 2024 ), RCAC1, RCAC2, RCAC3 demonstrated superior environmental performance compared to NAC in terms of Global Warming Potential (GWP), Photochemical Ozone Creation Potential (POCP), Acidification Potential (AP), Eutrophication Potential (EP), and Cumulative Energy Consumption (CED). For example, the GWP of RCACs with three different recycling cycles was 8.5%, 12.1%, and 15.8% lower than that of NAC. The authors attributed these environmental benefits to two main factors: (i) the shorter transportation distance of RCA from construction waste recycling plants to concrete production facilities (20 km) compared to NCA from quarries to concrete production facilities (380 km); (ii) avoiding landfilling of concrete waste through recycling. They particularly emphasized that these effects are amplified when concrete is repeatedly recycled. Similar results were reported in other study (Shmlls et al. 2023 ), where the use of RCAC1 and RCAC2 resulted in approximately 20% and 25% reduction in GWP. Kim and Jang ( 2022 ) analyzed the environmental impact of using multi-RP as a partial replacement for cement. According to their study, incorporating 20% RP recycled three times reduced GWP by 15% while achieving the target strength. Furthermore, it was observed that concrete containing 10% RP offered greater environmental benefits compared to concrete containing 100% RCA, which is due to the significantly higher CO 2 emissions from cement compared to other materials used in concrete.

The economic viability of multi-recycling of concrete has been relatively underexplored, and its benefits can vary depending on the circumstances. In the study by Kim and Jang ( 2022 ), the production cost of RCAC2 was approximately 5% lower than that of NAC. However, the compressive strength was 13% lower, leading the authors to emphasize that economic discussions should consider both intended properties and production costs together. The modification of multi-RAC for better performance could potentially worsen its economic viability. In a study (Shmlls et al. 2023 ), replacing NCA with RCA1 by 30% increased the cost per cubic meter of concrete from $147.4 to $152.9. Even with a 70% replacement rate of RCA1, the cost remained higher than that of NAC at $151.9. Similarly, replacing RCA1 with RCA2 resulted in the costs of $149.0 and $148.1 at 30% and 70% replacement rates, respectively, still higher than that of NAC. This is because natural aggregate is not inherently expensive material, and additionally, more additives are required proportionally to the number of recycling to enhance the workability of multi-RAC. While the primary purpose of recycling is environmentally driven, economic feasibility is essential for sustained implementation in actual industries. Further comprehensive research is necessary to understand the economic viability of multi-recycling.

According to the findings of this review, multiple-time recycling is responsible for the performance loss in concrete, and the extent of this loss becomes more pronounced with an increase in the number of recycling cycles. Nevertheless, it is crucial to comprehend that the loss does not imply restricting the utilization of multi-recycled concrete. Even when no strengthening methods are applied, multi-recycled concrete can be used as normal strength (e.g., 20 MPa) as well as high strength concrete (e.g., 50 MPa) (see Figs.  9 and 10 ), and this strength range satisfactorily meets the requirements in many industry standards. For instance, Zhu et al. (Zhu et al. 2019b ) reported that the 1st and 2nd generation concrete met the 100-year design life requirement in harsh and cold environments according to the Chinese design code, while the 3rd generation concrete satisfied the 50-year design life requirement.

Despite the limited number of publications on multi recycling, several research gaps could be identified. In most previous studies, concrete waste was recycled multiple times as coarse aggregate, and few studies treated it as fine aggregate and powder (Fig.  17 a). Considering that fine particles are inevitably generated during the concrete multiple recycling process (Salesa et al. 2017b ; Zhu et al. 2019b ), further research on their utilization is needed to achieve multi-and-zero waste recycling. It is well known that the properties of concrete are significantly influenced by the materials used. Modern concrete may incorporate additives such as fibers, nanomaterials, water reducers and air-entraining agents to achieve optimal performance (Kidalova et al. 2012 ; Kowalik and Ubysz 2021 ; Sánchez-Pantoja et al. 2023 ). Furthermore, for environmental benefits, industrial by-products like fly ash and ground granulated blast-furnace slag, as well as industrial waste such as glass, brick, clay, plastic, and ceramic wastes, are used as supplementary cementitious materials (Shirdam et al. 2019 ; Sičáková et al. 2017 ; Tawfik et al. 2024 ). However, the effect of the repeated recycling of concrete containing these materials on the properties of next-generation concrete has not been investigated. Another research gap can also be clearly found in the types of concrete. The majority of previous studies have focused on conventional concrete, which requires compaction. Little study was carried out on self-compacting concrete and mortar (Fig.  17 b). Additionally, very limited research has been conducted on steel and fiber reinforced concrete.

Number of studies categorized by material type ( a ) and mixture type ( b )

Table 8 summarizes the types of tests conducted in literature. Workability and compressive strength tests, as the most representative properties of fresh and hardened concrete, were the most frequently performed. Following these, properties such as tensile strength, water absorption and elastic modulus were also often measured. On the other hand, relatively little testing has been performed on the durability of concrete, such as abrasion resistance and freeze–thaw resistance.

In summary, current studies on multi- recycling of concrete primarily focus on the basic properties of traditional compacted concrete containing RCA, which may provide directions for further research. For example:

The utilization of fine particles generated from multi-cycle recycling needs to be studied. The use of fine particles is directly related to achieving zero waste, and their counterparts, i.e., sand and cement, emit more CO 2 than coarse aggregates. Therefore, fine particles have the potential to make a significant contribution to reducing CO 2 emissions.

A more systematic investigation is needed into how the raw materials of parent concrete affect the properties of next-generation concrete. This will help identify which factors have favorable or unfavorable influences on repeated recycling.

Examining various types of cementitious mixtures, including self-compacting mortar and concrete, can provide an expanded understanding of multi- recycling. Furthermore, given that concrete is often used in combination with fibers and rebar, it is essential to investigate the effect of multi-recycling on reinforced concrete.

One notable weakness of recycled concrete is its low durability, which is a major impediment to using recycled materials in concrete. Thus, it is crucial to conduct various tests on the durability properties of multi-recycled cementitious mixtures and explore ways to enhance their performance.

The environmental benefits of multi-recycling of concrete need to be better understood, and an investigation into establishing an economic model to sustain this recycling practice is also necessary.

These exemplary further studies are expected to build the body of knowledge on multi- recycling of concrete and contribute to better utilization of waste.

Conclusions

This paper has conducted a literature review on the multi- recycling of construction waste, and the following conclusions can be drawn:

The number of times concrete is recycled affects the quality of the recycled material obtained from it. As the number of recycling increases, the recycled aggregate and powder have more micro cracks and pores.

Recycled materials downgraded by multi-recycling have a negative influence on the workability, mechanical properties, and durability of concrete.

Performance losses resulting from multiple cycles of concrete recycling can be offset by various strengthening methods, such as carbonation of recycled materials, modified mix design and mixing techniques.

It should be noted that the lack of available data limits a clear assessment of the effect of multi-recycling of concrete and the identification of key contributing factors for the effect. Nevertheless, in this study, clear research gaps in existing studies were identified, and the limitations and potential of multi-recycling of concrete were discussed. Further comprehensive research is needed on the various types and properties of multi-recycled concrete.

Data Availability

The datasets generated during and/or analysed during the current study are available from the corresponding author on reasonable request.

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This research was funded in whole by the National Science Centre, Poland (Grant number 2022/45/N/ST8/01782).

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Kim, J. Sustainable Construction Exploration: A Review of Multi-Recycling of Concrete Waste. Int J Environ Res 18 , 103 (2024). https://doi.org/10.1007/s41742-024-00652-z

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Received : 02 April 2024

Revised : 26 July 2024

Accepted : 02 August 2024

Published : 31 August 2024

DOI : https://doi.org/10.1007/s41742-024-00652-z

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