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Research Summary – Structure, Examples and Writing Guide

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Research Summary

Definition:

A research summary is a brief and concise overview of a research project or study that highlights its key findings, main points, and conclusions. It typically includes a description of the research problem, the research methods used, the results obtained, and the implications or significance of the findings. It is often used as a tool to quickly communicate the main findings of a study to other researchers, stakeholders, or decision-makers.

Structure of Research Summary

The Structure of a Research Summary typically include:

• Introduction : This section provides a brief background of the research problem or question, explains the purpose of the study, and outlines the research objectives.
• Methodology : This section explains the research design, methods, and procedures used to conduct the study. It describes the sample size, data collection methods, and data analysis techniques.
• Results : This section presents the main findings of the study, including statistical analysis if applicable. It may include tables, charts, or graphs to visually represent the data.
• Discussion : This section interprets the results and explains their implications. It discusses the significance of the findings, compares them to previous research, and identifies any limitations or future directions for research.
• Conclusion : This section summarizes the main points of the research and provides a conclusion based on the findings. It may also suggest implications for future research or practical applications of the results.
• References : This section lists the sources cited in the research summary, following the appropriate citation style.

How to Write Research Summary

Here are the steps you can follow to write a research summary:

• Read the research article or study thoroughly: To write a summary, you must understand the research article or study you are summarizing. Therefore, read the article or study carefully to understand its purpose, research design, methodology, results, and conclusions.
• Identify the main points : Once you have read the research article or study, identify the main points, key findings, and research question. You can highlight or take notes of the essential points and findings to use as a reference when writing your summary.
• Write the introduction: Start your summary by introducing the research problem, research question, and purpose of the study. Briefly explain why the research is important and its significance.
• Summarize the methodology : In this section, summarize the research design, methods, and procedures used to conduct the study. Explain the sample size, data collection methods, and data analysis techniques.
• Present the results: Summarize the main findings of the study. Use tables, charts, or graphs to visually represent the data if necessary.
• Interpret the results: In this section, interpret the results and explain their implications. Discuss the significance of the findings, compare them to previous research, and identify any limitations or future directions for research.
• Conclude the summary : Summarize the main points of the research and provide a conclusion based on the findings. Suggest implications for future research or practical applications of the results.
• Revise and edit : Once you have written the summary, revise and edit it to ensure that it is clear, concise, and free of errors. Make sure that your summary accurately represents the research article or study.
• Add references: Include a list of references cited in the research summary, following the appropriate citation style.

Example of Research Summary

Here is an example of a research summary:

Title: The Effects of Yoga on Mental Health: A Meta-Analysis

Introduction: This meta-analysis examines the effects of yoga on mental health. The study aimed to investigate whether yoga practice can improve mental health outcomes such as anxiety, depression, stress, and quality of life.

Methodology : The study analyzed data from 14 randomized controlled trials that investigated the effects of yoga on mental health outcomes. The sample included a total of 862 participants. The yoga interventions varied in length and frequency, ranging from four to twelve weeks, with sessions lasting from 45 to 90 minutes.

Results : The meta-analysis found that yoga practice significantly improved mental health outcomes. Participants who practiced yoga showed a significant reduction in anxiety and depression symptoms, as well as stress levels. Quality of life also improved in those who practiced yoga.

Discussion : The findings of this study suggest that yoga can be an effective intervention for improving mental health outcomes. The study supports the growing body of evidence that suggests that yoga can have a positive impact on mental health. Limitations of the study include the variability of the yoga interventions, which may affect the generalizability of the findings.

Conclusion : Overall, the findings of this meta-analysis support the use of yoga as an effective intervention for improving mental health outcomes. Further research is needed to determine the optimal length and frequency of yoga interventions for different populations.

References :

• Cramer, H., Lauche, R., Langhorst, J., Dobos, G., & Berger, B. (2013). Yoga for depression: a systematic review and meta-analysis. Depression and anxiety, 30(11), 1068-1083.
• Khalsa, S. B. (2004). Yoga as a therapeutic intervention: a bibliometric analysis of published research studies. Indian journal of physiology and pharmacology, 48(3), 269-285.
• Ross, A., & Thomas, S. (2010). The health benefits of yoga and exercise: a review of comparison studies. The Journal of Alternative and Complementary Medicine, 16(1), 3-12.

Purpose of Research Summary

The purpose of a research summary is to provide a brief overview of a research project or study, including its main points, findings, and conclusions. The summary allows readers to quickly understand the essential aspects of the research without having to read the entire article or study.

Research summaries serve several purposes, including:

• Facilitating comprehension: A research summary allows readers to quickly understand the main points and findings of a research project or study without having to read the entire article or study. This makes it easier for readers to comprehend the research and its significance.
• Communicating research findings: Research summaries are often used to communicate research findings to a wider audience, such as policymakers, practitioners, or the general public. The summary presents the essential aspects of the research in a clear and concise manner, making it easier for non-experts to understand.
• Supporting decision-making: Research summaries can be used to support decision-making processes by providing a summary of the research evidence on a particular topic. This information can be used by policymakers or practitioners to make informed decisions about interventions, programs, or policies.
• Saving time: Research summaries save time for researchers, practitioners, policymakers, and other stakeholders who need to review multiple research studies. Rather than having to read the entire article or study, they can quickly review the summary to determine whether the research is relevant to their needs.

Characteristics of Research Summary

The following are some of the key characteristics of a research summary:

• Concise : A research summary should be brief and to the point, providing a clear and concise overview of the main points of the research.
• Objective : A research summary should be written in an objective tone, presenting the research findings without bias or personal opinion.
• Comprehensive : A research summary should cover all the essential aspects of the research, including the research question, methodology, results, and conclusions.
• Accurate : A research summary should accurately reflect the key findings and conclusions of the research.
• Clear and well-organized: A research summary should be easy to read and understand, with a clear structure and logical flow.
• Relevant : A research summary should focus on the most important and relevant aspects of the research, highlighting the key findings and their implications.
• Audience-specific: A research summary should be tailored to the intended audience, using language and terminology that is appropriate and accessible to the reader.
• Citations : A research summary should include citations to the original research articles or studies, allowing readers to access the full text of the research if desired.

When to write Research Summary

Here are some situations when it may be appropriate to write a research summary:

• Proposal stage: A research summary can be included in a research proposal to provide a brief overview of the research aims, objectives, methodology, and expected outcomes.
• Conference presentation: A research summary can be prepared for a conference presentation to summarize the main findings of a study or research project.
• Journal submission: Many academic journals require authors to submit a research summary along with their research article or study. The summary provides a brief overview of the study’s main points, findings, and conclusions and helps readers quickly understand the research.
• Funding application: A research summary can be included in a funding application to provide a brief summary of the research aims, objectives, and expected outcomes.
• Policy brief: A research summary can be prepared as a policy brief to communicate research findings to policymakers or stakeholders in a concise and accessible manner.

Advantages of Research Summary

Research summaries offer several advantages, including:

• Time-saving: A research summary saves time for readers who need to understand the key findings and conclusions of a research project quickly. Rather than reading the entire research article or study, readers can quickly review the summary to determine whether the research is relevant to their needs.
• Clarity and accessibility: A research summary provides a clear and accessible overview of the research project’s main points, making it easier for readers to understand the research without having to be experts in the field.
• Improved comprehension: A research summary helps readers comprehend the research by providing a brief and focused overview of the key findings and conclusions, making it easier to understand the research and its significance.
• Enhanced communication: Research summaries can be used to communicate research findings to a wider audience, such as policymakers, practitioners, or the general public, in a concise and accessible manner.
• Facilitated decision-making: Research summaries can support decision-making processes by providing a summary of the research evidence on a particular topic. Policymakers or practitioners can use this information to make informed decisions about interventions, programs, or policies.
• Increased dissemination: Research summaries can be easily shared and disseminated, allowing research findings to reach a wider audience.

Limitations of Research Summary

Limitations of the Research Summary are as follows:

• Limited scope: Research summaries provide a brief overview of the research project’s main points, findings, and conclusions, which can be limiting. They may not include all the details, nuances, and complexities of the research that readers may need to fully understand the study’s implications.
• Risk of oversimplification: Research summaries can be oversimplified, reducing the complexity of the research and potentially distorting the findings or conclusions.
• Lack of context: Research summaries may not provide sufficient context to fully understand the research findings, such as the research background, methodology, or limitations. This may lead to misunderstandings or misinterpretations of the research.
• Possible bias: Research summaries may be biased if they selectively emphasize certain findings or conclusions over others, potentially distorting the overall picture of the research.
• Format limitations: Research summaries may be constrained by the format or length requirements, making it challenging to fully convey the research’s main points, findings, and conclusions.
• Accessibility: Research summaries may not be accessible to all readers, particularly those with limited literacy skills, visual impairments, or language barriers.

About the author

Muhammad Hassan

Researcher, Academic Writer, Web developer

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Scientific Journal Article Summary Example: Best Practices

We can all agree - condensing complex scientific research into an accurate, engaging summary is tricky.

But with the right approach, you can craft summaries that effectively convey key details and implications to various audiences.

In this post, you'll uncover best practices for summarizing scientific journal articles. You'll learn how to identify core findings, summarize methodologies precisely, convey results properly, and synthesize everything into a cohesive narrative. An example APA-formatted summary is also provided to see these tips in action.

Introduction to Scientific Journal Article Summaries

Summarizing scientific journal articles is an important skill for researchers and students. It allows you to concisely communicate the key objectives, methods, findings, and conclusions of a study to various audiences.

The Art of Condensing Complex Research

When summarizing scientific research, it is essential to identify and highlight the core elements that capture the essence of the study. This involves analyzing complex details and data to extract the most critical information. Key steps include:

Clearly articulating the central research question or objective

Condensing the methods into a simple overview

Highlighting key results and statistics

Summarizing the conclusions and implications

Skills like active reading, critical thinking, and concise writing help distill multidimensional research into accessible summaries.

Target Audience: Tailoring Summaries for Different Readers

Scientific article summaries should be adapted based on the intended reader. For example:

Emphasize key learning points

Define discipline-specific terminology

Focus on practical applications

Academic Peers

Use precise disciplinary language

Include technical details on methodology

Highlight novel contributions to the field

Scientific Journal Article Summary Example for Students

Here is an example summary of a microbiology study tailored specifically for a student reader:

A 2022 study on antimicrobial peptides (AMPs) found that a synthetic AMP named “peptoid-1” effectively killed methicillin-resistant Staphylococcus aureus (MRSA) in lab tests. The peptoid-1 molecule disrupted the bacterial cell membranes of MRSA, including difficult-to-treat biofilms. The research demonstrates the potential of synthetic AMPs as a promising new class of antibiotics to combat drug-resistant superbugs like MRSA. This has important implications for developing urgently needed antibiotics to address the growing global threat of antimicrobial resistance.

This summary briefly explains the key learning points of the study in straightforward language appropriate for students. Technical details are avoided, and emphasis is placed on articulating the essential findings, applications, and implications.

How do you write a summary for a scientific journal article?

A well-written summary of a scientific journal article should cover three main points:

Why the research was done

The first section of your summary should provide background information and context about why the research was conducted. This includes:

The research goals, questions, or hypotheses being investigated

Gaps in existing knowledge the study aims to address

The overall importance of the research topic

For example:

This study investigates the effects of climate change on crop yields in sub-Saharan Africa. Prior research has not examined how higher temperatures may impact staple crops in this region specifically. Understanding climate change effects on agriculture is critical for food security policymaking across developing nations.

What happened in the experiment

The second section should explain the methodology and highlight key findings from the study's experiments, data analysis, or other research activities. Use concise language to describe:

The study sample, materials, and procedures

Statistical analysis techniques

Major results that relate to the research questions

For instance:

Researchers compiled 30 years of temperature data and crop production records from six countries. Using regression analysis, they found higher temperatures significantly reduced wheat and maize yields by an average of 15% and 12%, respectively.

What conclusions the author drew

Finally, summarize the researchers' conclusions, implications, and recommendations based on their results. Mention any limitations noted and future research suggested.

The authors conclude rising temperatures from climate change could seriously impact food security in sub-Saharan Africa. They call for policies to help farmers adapt through heat-tolerant crop varieties and improved irrigation access. Additional research is needed to develop effective adaptation strategies.

Following this basic structure will help you efficiently summarize the essential information in a scientific journal article.

What is journal article summary?

A journal article summary concisely overviews the main points and key takeaways from a scientific paper published in an academic journal. It allows readers to quickly understand the core findings and arguments of the original article without having to read the full text.

An effective summary should:

Identify the main objective or research question the authors aimed to address

Highlight the key methods, data sources, and analytical approaches used

Summarize the major results and main conclusions

Note any limitations or unanswered questions for future research

For example, a summary of a psychology paper might overview the hypothesis tested, experiment methodology, participant demographics, statistical analyses conducted, and whether the findings supported or rejected the original hypothesis.

Summaries are a useful way for scientists to stay current with latest developments across broad fields of research. They also help readers determine if they should invest time reading the full article based on whether the topic and findings are relevant to their own work. As such, summaries should provide enough detail and context to evaluate the scope and implications of the research.

Formatting a Journal Article Summary

When writing a journal article summary, the exact formatting can vary depending on the target publication or audience needs. However, some key elements tend to be consistent:

Citation: Include a full citation of the original paper using the required scholarly style

Background: 1-2 sentences placing the research in context of current knowledge state

Objective: 1 sentence stating the purpose/focus of the study

Methods: 1-2 sentences summarizing the experiment, data, analyses performed

Results: 2-3 sentences describing the major findings

Conclusion: 1-2 sentences covering implications and future directions

The full summary is typically 150-250 words or 8-15 sentences. Brevity and precision are key when condensing a complex study into such a compact overview.

What is the general format for summary of a journal article?

Summarizing a scientific journal article requires capturing the key details while maintaining brevity. Here are some best practices:

Follow the structure of the original paper

Like an abstract, organize your summary by:

Introduction - Cover the background, purpose, and hypothesis.

Methods - Briefly describe the experimental design.

Results - Highlight the main findings without going into excessive detail.

Discussion - Summarize the author's interpretation and conclusions.

Focus on key information

Identify and extract only the most critical details:

Research goals

Sample characteristics

Variables examined

Statistical analyses performed

Major results obtained

Conclusions reached

Maintain objectivity

Present the findings in a neutral tone without inserting your own opinions or judgments.

Use paraphrasing

Summarize points in your own words instead of relying heavily on direct quotes. However, scientifically precise terminology should be retained.

Follow formatting guidelines

Adhere to style formatting per journal or publisher requirements. Most scientific summaries require American Psychological Association (APA) citations.

Keeping summaries clear, accurate, and concise requires practice. But following these research article summary guidelines will help ensure quality. With wisio.app 's tools for discovering papers and translating terminology, scientists can efficiently produce summaries to advance their work.

How do you summarize a journal article in APA?

When summarizing a journal article in APA style, it is important to follow some key guidelines:

Use Your Own Words

Read through the full article and highlight the key points

Write the summary using your own words while staying true to the original meaning

Avoid directly quoting chunks of text from the original

Focus on Relevant Elements

Identify the critical elements like purpose, methods, findings, conclusions

Summarize only details directly relevant to the core focus of the article

Keep contextual details brief or exclude if non-essential

Maintain Clear Distinction

Clearly indicate in the summary which ideas are yours versus the author's

Do not interject your own analysis, evaluation, or interpretation

Keep the summary objective and descriptive in nature

Follow APA Formatting

Include a citation to the original article

Apply proper in-text citations for any verbatim short quotes

Format the summary using standard APA guidelines for font, spacing, etc.

Keep it Brief

Strive to keep the summary less than 10-15% of the original length

Tighten long summaries by removing non-vital details

Aim for brevity while preserving meaning and scientific accuracy

Following these basic tips will help produce an APA-style summary that accurately conveys the essence of the journal article in a clear and concise manner.

Understanding the Structure of Scientific Articles

Delve into the typical structure of scientific journal articles to understand the framework from which summaries are derived.

Dissecting the IMRaD Format

The IMRaD (Introduction, Methods, Results, and Discussion) format is a standard structure used in scientific writing. Understanding this structure is key when summarizing journal articles.

The Introduction presents background context, defines key terms, and states the research objective and hypothesis. When summarizing, capture the main research goals and questions driving the study.

The Methods section provides details on the experimental design, materials, data collection procedures, and statistical analysis. Identify the overall methodology without delving into granular specifics.

The Results present objective findings from the data analysis. Highlight key quantitative outcomes and discoveries in your summary.

The Discussion section interprets the results, explores their significance, compares them to other studies, acknowledges limitations, and suggests future work. Summarize the main conclusions, implications, and next steps discussed.

Decoding Abstracts and Conclusions

Article abstracts concisely overview the purpose, methods, findings, and implications covered in the full text. Leverage abstracts when first assessing articles for relevance.

Conclusions summarize the key points and provide final thoughts. Use them to validate your understanding of the central themes.

Both provide a helpful frame of reference when synthesizing summaries.

Critical Reading for Effective Summarization

Carefully analyze each section and subsection

Annotate and highlight meaningful passages

Identify connections between key ideas

Focus on what findings reveal about the research problem

Capture enough detail to convey original intent

Synthesize using clear, concise language

Thoughtful critical reading builds comprehension essential for quality summarization.

How to Summarize a Research Article

Summarizing a research article requires identifying the core findings and contributions, accurately capturing the methodologies, conveying the key results and implications, and crafting a cohesive narrative. Here is a step-by-step guide:

Identifying Core Findings and Contributions

When summarizing a research article, it is essential to pinpoint the most significant findings and contributions of the study. Key steps include:

Read the abstract and conclusion to understand the major findings.

Highlight unique discoveries, breakthroughs, or advances made.

Note the implications and importance communicated by the authors.

Identify knowledge gaps filled or new frameworks proposed.

Focusing on these elements will help determine the core essence to convey in your summary.

Summarizing Methodologies with Precision

While summarizing the methodologies, avoid oversimplifying complex research processes. Key tips include:

Use concise yet precise language to describe methods applied.

Specify instruments or tools leveraged in the research.

Provide sample sizes and measures captured if relevant.

Note statistical or analytical techniques utilized.

Maintaining key methodological details demonstrates analytical rigor when sharing the research with others.

Conveying Results and Their Implications

An effective summary should clearly communicate the study's results and why they matter. To accomplish this:

Report quantitative findings or qualitative discoveries made.

Contextualize results using benchmarks, comparisons, or real-world impacts.

Connect results back to the research aims and knowledge gaps identified.

Discuss limitations along with future research needed.

This enables readers to grasp the meaningfulness of the results.

Crafting a Cohesive Narrative

Finally, structure the various summary elements into a cohesive overview:

Organize content using section headers around aims, methods, results, and conclusions.

Use transition words (e.g. “additionally,” “in contrast,” “as a result”) to improve flow.

Focus on information that supports the core findings and contributions of the work.

Avoid excessive details and maintain brevity.

Following these steps will produce a concise yet insightful summary showcasing the relevance of the research.

Scientific Journal Article Summary Example APA Format

Adhering to proper formatting guidelines is critical when summarizing scientific journal articles, especially for academic purposes. The American Psychological Association (APA) style provides clear standards that enable precise, uniform communication across scientific disciplines.

Adhering to APA Style in Summaries

Following APA style lends credibility and ensures readers can easily reference sources. Key elements include:

Properly formatting in-text citations and references

Using headings and subheadings to organize content

Applying title case capitalization

Using active voice and clear language

Formatting title page with running head, page numbers, and other elements

Adhering to these conventions helps establish summaries as reputable academic works worthy of consideration.

Example of an APA-Formatted Summary

Here is an example of a properly formatted APA summary:

Smith, J. (2021). The impact of climate change on coral reef ecosystems. Marine Biology , 166 (3), 201–215. https://doi.org/10.1007/s00227-021-03876-8

This study examined the effects of rising ocean temperatures and acidification on coral reef health over 5 years. The author tracked changes in coral cover and biodiversity across 12 reef sites in the Caribbean Sea. On average, coral cover declined by 18.7% and species richness decreased by 22.4% on reefs exposed to prolonged marine heatwaves. The declines were attributed to mass coral bleaching triggered by unusually warm water temperatures. The findings suggest climate change may severely degrade coral reef ecosystems within decades. Further research into mitigation strategies is warranted to preserve these valuable marine habitats.

Key elements like the citation, use of third-person perspective, headings, and formal academic language adhere to APA conventions.

Common Mistakes to Avoid in APA Summaries

When writing APA-style summaries, writers should avoid:

Neglecting to include a full citation for the original work

Using first-person pronouns like “I” or “we”

Inserting opinions or commentary from the summarizer

Failing to use headings to organize content

Including direct quotes from the original text

Avoiding these pitfalls will ensure an APA-compliant summary format.

Practical Tips for Writing Scientific Summaries

Language and terminology: clarity above all.

When summarizing scientific research, it is crucial to use clear, precise language and terminology. Avoid vague or ambiguous phrasing, and opt for specificity whenever possible. Define key terms, acronyms, or concepts that may be unfamiliar to readers. Simplify complex statistical analysis or scientific jargon for general audiences without losing integrity. Stick to plain language with straightforward syntax to ensure readers grasp the key findings.

Brevity vs. Completeness: Striking the Right Balance

Balancing brevity and completeness presents a challenge when summarizing scientific papers. Focus on highlighting the central objective, methodology, results, and conclusions. Resist dwelling on intricate experimental details or tangential discussions. However, take care not to oversimplify complex research. Seek to distill the essence without omitting information that substantively impacts the interpretation or reproducibility of the study. Adhere to word limits when required but avoid excluding key facts, figures, or takeaways in the quest for brevity.

Ethical Considerations in Summarizing Research

When writing scientific summaries, it is vital to represent the original piece fairly and avoid misconstruing the author's intent. Exercise caution when paraphrasing specialized statistical analysis or scientific terminology. Cite sources properly, and refrain from plagiarizing significant portions of the original text. Also, recognize the limitations of summarization; for complete details, readers should consult the primary literature. By maintaining high ethical standards, scientific summarizers uphold the integrity of research communication.

Conclusion: Synthesizing the Essentials

Summarizing scientific journal articles effectively requires adhering to several key best practices. By focusing on the article's key findings, methodology, and conclusions, skilled summarizers can efficiently communicate the essential information to readers.

Recapitulating Best Practices for Summary Writing

When summarizing a scientific article, it's important to:

Highlight the important methods, data, and analyses used in the study

Note the study's core findings and conclusions

Maintain the authors' original meaning and intent

Follow applicable formatting guidelines (e.g. APA style)

Adhering to these principles helps preserve the accuracy and integrity of the research while making the information more readily digestible.

Summary of a Research Article Example

Here is an example summary incorporating the best practices covered in this article:

Smith et al. (2021) set out to understand the effects of climate change on crop yields. The authors analyzed 30 years of temperature, rainfall, and corn production data across major farming regions of the U.S. Midwest. They found that increased temperatures and shifting rainfall patterns have already caused measurable declines in corn yields over the past decade. Based on predictive climate models, the authors expect these negative impacts on crop productivity to accelerate in the coming years if mitigation measures are not adopted. This clearly structured summary concisely conveys the objective, methods, key results, and conclusions of the article while maintaining authorial intent and voice. The formatting adheres to APA guidelines.

In this way, skillful summarization enables efficient scientific communication while upholding standards of accuracy and integrity.

Antonio Carlos Filho @acfilho_dev

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How to Summarize a Journal Article

Last Updated: February 21, 2024 Approved

Reading Article

Planning draft, writing summary, sample summaries.

This article was co-authored by Richard Perkins . Richard Perkins is a Writing Coach, Academic English Coordinator, and the Founder of PLC Learning Center. With over 24 years of education experience, he gives teachers tools to teach writing to students and works with elementary to university level students to become proficient, confident writers. Richard is a fellow at the National Writing Project. As a teacher leader and consultant at California State University Long Beach's Global Education Project, Mr. Perkins creates and presents teacher workshops that integrate the U.N.'s 17 Sustainable Development Goals in the K-12 curriculum. He holds a BA in Communications and TV from The University of Southern California and an MEd from California State University Dominguez Hills. wikiHow marks an article as reader-approved once it receives enough positive feedback. This article has 24 testimonials from our readers, earning it our reader-approved status. This article has been viewed 1,414,187 times.

Summarizing a journal article is presenting a focused overview of a research study published in a peer-reviewed, scholarly source. A journal article summary provides readers with a short descriptive commentary, giving them some insight into the article's focus. Writing and summarizing a journal article is a common task for college students and research assistants alike. With a little practice, you can learn to read the article effectively with an eye for summary, plan a successful summary, and write it to completion.

• The purpose of an abstract is to allow researchers to quickly scan a journal and see if specific research articles are applicable to the work they are doing. If you're collecting research on immune system responses in rodents, you'll be able to know in 100 words not only whether or not the research is in your field, but whether the conclusions back up your own findings, or differ from it.
• Remember that an abstract and an article summary are two different things, so an article summary that looks just like the abstract is a poor summary. [1] X Research source An abstract is highly condensed and cannot provide the same level of detail regarding the research and its conclusions that a summary can.

• You still need to go back and actually read the article after coming to the conclusion, but only if the research is still applicable. If you're collecting research, you may not need to digest another source that backs up your own if you're looking for some dissenting opinions.

• Look for words like hypothesis, results, typically, generally, or clearly to give you hints about which sentence is the thesis.
• Underline, highlight, or rewrite the main argument of the research in the margins. Keep yourself focused on this main point, so you'll be able to connect the rest of the article back to that idea and see how it works together.
• In the humanities, it's sometimes more difficult to get a clear and concise thesis for an article because they are often about complex, abstract ideas (like class in post-modern poetics, or feminist film, for example). If it's unclear, try to articulate it for yourself, as best as you can understand the author's ideas and what they're attempting to prove with their analysis.
• Try to analyze the author's tone, looking at some of the keywords that really tells you what they are trying to get across to you.

• Different areas of focus within a journal article will usually be marked with subsection titles that target a specific step or development during the course of the research study. The titles for these sub-sections are usually bold and in a larger font than the remaining text.
• Keep in mind that academic journals are often dry reading. Is it absolutely necessary to read through the author's 500 word proof of the formulas used in the glycerine solution fed to the frogs in the research study? Maybe, but probably not. It's usually not essential to read research articles word-for-word, as long as you're picking out the main idea, and why the content is there in the first place.

• These segments will usually include an introduction, methodology, research results, and a conclusion in addition to a listing of references.

• When you're first getting started, it's helpful to turn your filter off and just quickly write out what you remember from the article. These will help you discover the main points necessary to summarize.

• Depending on the research, you may want to describe the theoretical background of the research, or the assumptions of the researchers. In scientific writing, it's important to clearly summarize the hypotheses the researchers outlined before undertaking the research, as well as the procedures used in following through with the project. Summarize briefly any statistical results and include a rudimentary interpretation of the data for your summary.
• In humanities articles, it's usually good to summarize the fundamental assumptions and the school of thought from which the author comes, as well as the examples and the ideas presented throughout the article.

• Any words or terms that the author coins need to be included and discussed in your summary.

• As a general rule of thumb, you can probably make one paragraph per main point, ending up with no more than 500-1000 words, for most academic articles. For most journal summaries, you'll be writing several short paragraphs that summarize each separate portion of the journal article.

• In scientific articles, usually there is an introduction which establishes the background for the experiment or study, and won't provide you with much to summarize. It will be followed by the development of a research question and testing procedures, though, which are key in dictating the content for the rest of the article.

• The specifics of the testing procedures don't usually need to be included in your summary in their entirety; they should be reduced to a simple idea of how the research question was addressed. The results of the study will usually be processed data, sometimes accompanied by raw, pre-process data. Only the processed data needs to be included in the summary.

• Make sure your summary covers the research question, the conclusions/results, and how those results were achieved. These are crucial parts of the article and cannot be left out.

• This is sometimes more important in summaries dealing with articles in the humanities. For example, it might be helpful to unpack dense arguments about poet George Herbert's relationship to the divine with more pedestrian summaries: "The author seeks to humanize Herbert by discussing his daily routines, as opposed to his philosophies."

• This can be difficult for some inexperienced research writers to get the hang of at first, but remember to keep the "I" out of it.

• Check verbs after writing. If you're using the same ones over and over, your reader will get bored. In this case, try to go back and really see if you can make really efficient choices.

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• ↑ https://owl.english.purdue.edu/owl/owlprint/930/
• ↑ https://student.unsw.edu.au/writing-critical-review
• ↑ http://web.pdx.edu/~jduh/courses/faq/JouranlArticleSearch.htm
• ↑ http://web.cortland.edu/hendrick/journalarticle.pdf

About This Article

To summarize a journal article, start by reading the author's abstract, which tells you the main argument of the article. Next, read the article carefully, highlighting portions, identifying key vocabulary, and taking notes as you go. In your summary, define the research question, indicate the methodology used, and focus mostly on the results of the research. Use your notes to help you stay focused on the main argument and always keep your tone objective—avoid using personal pronouns and drawing your own conclusions. For tips on how to read through the journal article thoroughly, such as starting with the conclusion, keep reading! Did this summary help you? Yes No

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Writing Article Summaries

• Understanding Article Summaries 

Common Problems in Article Summaries

Read carefully and closely, structure of the summary, writing the summary.

• Sample Outlines and Paragraphs

Understanding Article Summaries

An article summary is a short, focused paper about one scholarly article that is informed by a critical reading of that article. For argumentative articles, the summary identifies, explains, and analyses the thesis and supporting arguments; for empirical articles, the summary identifies, explains, and analyses the research questions, methods, findings, and implications of the study.

Although article summaries are often short and rarely account for a large portion of your grade, they are a strong indicator of your reading and writing skills. Professors ask you to write article summaries to help you to develop essential skills in critical reading, summarizing, and clear, organized writing. Furthermore, an article summary requires you to read a scholarly article quite closely, which provides a useful introduction to the conventions of writing in your discipline (e.g. Political Studies, Biology, or Anthropology).

The most common problem that students have when writing an article summary is that they misunderstand the goal of the assignment. In an article summary, your job is to write about the article, not about the actual topic of the article. For example, if you are summarizing Smith’s article about the causes of the Bubonic plague in Europe, your summary should be about Smith’s article: What does she want to find out about the plague? What evidence does she use? What is her argument? You are not writing a paper about the actual causes of Bubonic plague in Europe.

Further, as a part of critical reading, you will often consider your own position on a topic or an argument; it is tempting to include an assessment or opinion about the thesis or findings, but this is not the goal of an article summary. Rather, you must identify, explain, and analyse the main point and how it is supported.

Your key to success in writing an article summary is your understanding of the article; therefore, it is essential to read carefully and closely. The Academic Skills Centre offers helpful instruction on the steps for critical reading: pre-reading, active and analytical reading, and reflection.

Argumentative Articles

As you read an argumentative article, consider the following questions:

• What is the topic?
• What is the research question? In other words, what is the author trying to find out about that topic?
• How does the author position his/her article in relation to other studies of the topic?
• What is the thesis or position? What are the supporting arguments?
• How are supporting arguments developed? What kind of evidence is used?
• What is the significance of the author’s thesis? What does it help you to understand about the topic?

Empirical Articles

As you read an empirical article, consider the following questions:

• What is the research question?
• What are the predictions and the rationale for these predictions?
• What methods were used (participants, sampling, materials, procedure)? What were the variables and controls?
• What were the main results?
• Are the findings supported by previous research?
• What are the limitations of the study?
• What are the implications or applications of the findings?

Create a Reverse Outline

Creating a reverse outline is one way to ensure that you fully understand the article. Pre-read the article (read the abstract, introduction, and/or conclusion). Summarize the main question(s) and thesis or findings. Skim subheadings and topic sentences to understand the organization; make notes in the margins about each section. Read each paragraph within a section; make short notes about the main idea or purpose of each paragraph. This strategy will help you to see how parts of the article connect to the main idea or the whole of the article.

A summary is written in paragraph form and generally does not include subheadings. An introduction is important to clearly identify the article, the topic, the question or purpose of the article, and its thesis or findings. The body paragraphs for a summary of an argumentative article will explain how arguments and evidence support the thesis. Alternatively, the body paragraphs of an empirical article summary may explain the methods and findings, making connections to predictions. The conclusion explains the significance of the argument or implications of the findings. This structure ensures that your summary is focused and clear.

Professors will often give you a list of required topics to include in your summary and/or explain how they want you to organize your summary. Make sure you read the assignment sheet with care and adapt the sample outlines below accordingly.

One significant challenge in writing an article summary is deciding what information or examples from the article to include. Remember, article summaries are much shorter than the article itself. You do not have the space to explain every point the author makes. Instead, you will need to explain the author’s main points and find a few excellent examples that illustrate these points.

You should also keep in mind that article summaries need to be written in your own words. Scholarly writing can use complex terminology to explain complicated ideas, which makes it difficult to understand and to summarize correctly. In the face of difficult text, many students tend to use direct quotations, saving them the time and energy required to understand and reword it. However, a summary requires you to summarize, which means “to state briefly or succinctly” (Oxford English Dictionary) the main ideas presented in a text. The brevity must come from you, in your own words, which demonstrates that you understand the article.

Sample Outlines and Paragraph

Sample outline for an argumentative article summary.

• General topic of article
• Author’s research question or approach to the topic
• Author’s thesis
• Explain some key points and how they support the thesis
• Provide a key example or two that the author uses as evidence to support these points
• Review how the main points work together to support the thesis?
• How does the author explain the significance or implications of his/her article?

Sample Outline for an Empirical Article Summary

• General topic of study
• Author’s research question
• Variables and hypotheses
• Participants
• Experiment design
• Materials used
• Key results
• Did the results support the hypotheses?
• Implications or applications of the study
• Major limitations of the study

Sample Paragraph

The paragraph below is an example of an introductory paragraph from a summary of an empirical article:

Tavernier and Willoughby’s (2014) study explored the relationships between university students’ sleep and their intrapersonal, interpersonal, and educational development. While the authors cited many scholars who have explored these relationships, they pointed out that most of these studies focused on unidirectional correlations over a short period of time. In contrast, Tavernier and Willoughby tested whether there was a bidirectional or unidirectional association between participants’ sleep quality and duration and several psychosocial factors including intrapersonal adjustment, friendship quality, and academic achievement. Further they conducted a longitudinal study over a period of three years in order to determine whether there were changes in the strength or direction of these associations over time. They predicted that sleep quality would correlate with measures of intrapersonal adjustment, friendship quality, and academic achievement; they further hypothesized that this correlation would be bidirectional: sleep quality would predict psychosocial measures and at the same time, psychosocial measures would predict sleep quality.

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An executive summary is a thorough overview of a research report or other type of document that synthesizes key points for its readers, saving them time and preparing them to understand the study's overall content. It is a separate, stand-alone document of sufficient detail and clarity to ensure that the reader can completely understand the contents of the main research study. An executive summary can be anywhere from 1-10 pages long depending on the length of the report, or it can be the summary of more than one document [e.g., papers submitted for a group project].

Bailey, Edward, P. The Plain English Approach to Business Writing . (New York: Oxford University Press, 1997), p. 73-80 Todorovic, Zelimir William and Marietta Wolczacka Frye. “Writing Effective Executive Summaries: An Interdisciplinary Examination.” In United States Association for Small Business and Entrepreneurship. Conference Proceedings . (Decatur, IL: United States Association for Small Business and Entrepreneurship, 2009): pp. 662-691.

Importance of a Good Executive Summary

Although an executive summary is similar to an abstract in that they both summarize the contents of a research study, there are several key differences. With research abstracts, the author's recommendations are rarely included, or if they are, they are implicit rather than explicit. Recommendations are generally not stated in academic abstracts because scholars operate in a discursive environment, where debates, discussions, and dialogs are meant to precede the implementation of any new research findings. The conceptual nature of much academic writing also means that recommendations arising from the findings are distributed widely and not easily or usefully encapsulated. Executive summaries are used mainly when a research study has been developed for an organizational partner, funding entity, or other external group that participated in the research . In such cases, the research report and executive summary are often written for policy makers outside of academe, while abstracts are written for the academic community. Professors, therefore, assign the writing of executive summaries so students can practice synthesizing and writing about the contents of comprehensive research studies for external stakeholder groups.

When preparing to write, keep in mind that:

• An executive summary is not an abstract.
• An executive summary is not an introduction.
• An executive summary is not a preface.
• An executive summary is not a random collection of highlights.

Christensen, Jay. Executive Summaries Complete The Report. California State University Northridge; Clayton, John. "Writing an Executive Summary that Means Business." Harvard Management Communication Letter (July 2003): 2-4; Keller, Chuck. "Stay Healthy with a Winning Executive Summary." Technical Communication 41 (1994): 511-517; Murphy, Herta A., Herbert W. Hildebrandt, and Jane P. Thomas. Effective Business Communications . New York: McGraw-Hill, 1997; Vassallo, Philip. "Executive Summaries: Where Less Really is More." ETC.: A Review of General Semantics 60 (Spring 2003): 83-90 .

Structure and Writing Style

Writing an Executive Summary

Read the Entire Document This may go without saying, but it is critically important that you read the entire research study thoroughly from start to finish before you begin to write the executive summary. Take notes as you go along, highlighting important statements of fact, key findings, and recommended courses of action. This will better prepare you for how to organize and summarize the study. Remember this is not a brief abstract of 300 words or less but, essentially, a mini-paper of your paper, with a focus on recommendations.

Isolate the Major Points Within the Original Document Choose which parts of the document are the most important to those who will read it. These points must be included within the executive summary in order to provide a thorough and complete explanation of what the document is trying to convey.

Separate the Main Sections Closely examine each section of the original document and discern the main differences in each. After you have a firm understanding about what each section offers in respect to the other sections, write a few sentences for each section describing the main ideas. Although the format may vary, the main sections of an executive summary likely will include the following:

• An opening statement, with brief background information,
• The purpose of research study,
• Method of data gathering and analysis,
• Overview of findings, and,
• A description of each recommendation, accompanied by a justification. Note that the recommendations are sometimes quoted verbatim from the research study.

Combine the Information Use the information gathered to combine them into an executive summary that is no longer than 10% of the original document. Be concise! The purpose is to provide a brief explanation of the entire document with a focus on the recommendations that have emerged from your research. How you word this will likely differ depending on your audience and what they care about most. If necessary, selectively incorporate bullet points for emphasis and brevity. Re-read your Executive Summary After you've completed your executive summary, let it sit for a while before coming back to re-read it. Check to make sure that the summary will make sense as a separate document from the full research study. By taking some time before re-reading it, you allow yourself to see the summary with fresh, unbiased eyes.

Common Mistakes to Avoid

Length of the Executive Summary As a general rule, the correct length of an executive summary is that it meets the criteria of no more pages than 10% of the number of pages in the original document, with an upper limit of no more than ten pages [i.e., ten pages for a 100 page document]. This requirement keeps the document short enough to be read by your audience, but long enough to allow it to be a complete, stand-alone synopsis. Cutting and Pasting With the exception of specific recommendations made in the study, do not simply cut and paste whole sections of the original document into the executive summary. You should paraphrase information from the longer document. Avoid taking up space with excessive subtitles and lists, unless they are absolutely necessary for the reader to have a complete understanding of the original document. Consider the Audience Although unlikely to be required by your professor, there is the possibility that more than one executive summary will have to be written for a given document [e.g., one for policy-makers, one for private industry, one for philanthropists]. This may only necessitate the rewriting of the introduction and conclusion, but it could require rewriting the entire summary in order to fit the needs of the reader. If necessary, be sure to consider the types of audiences who may benefit from your study and make adjustments accordingly. Clarity in Writing One of the biggest mistakes you can make is related to the clarity of your executive summary. Always note that your audience [or audiences] are likely seeing your research study for the first time. The best way to avoid a disorganized or cluttered executive summary is to write it after the study is completed. Always follow the same strategies for proofreading that you would for any research paper. Use Strong and Positive Language Don’t weaken your executive summary with passive, imprecise language. The executive summary is a stand-alone document intended to convince the reader to make a decision concerning whether to implement the recommendations you make. Once convinced, it is assumed that the full document will provide the details needed to implement the recommendations. Although you should resist the temptation to pad your summary with pleas or biased statements, do pay particular attention to ensuring that a sense of urgency is created in the implications, recommendations, and conclusions presented in the executive summary. Be sure to target readers who are likely to implement the recommendations.

Bailey, Edward, P. The Plain English Approach to Business Writing . (New York: Oxford University Press, 1997), p. 73-80; Christensen, Jay. Executive Summaries Complete The Report. California State University Northridge; Executive Summaries. Writing@CSU. Colorado State University; Clayton, John. "Writing an Executive Summary That Means Business." Harvard Management Communication Letter , 2003; Executive Summary. University Writing Center. Texas A&M University;  Green, Duncan. Writing an Executive Summary.   Oxfam’s Research Guidelines series ; Guidelines for Writing an Executive Summary. Astia.org; Markowitz, Eric. How to Write an Executive Summary. Inc. Magazine, September, 15, 2010; Kawaski, Guy. The Art of the Executive Summary. "How to Change the World" blog; Keller, Chuck. "Stay Healthy with a Winning Executive Summary." Technical Communication 41 (1994): 511-517; The Report Abstract and Executive Summary. The Writing Lab and The OWL. Purdue University; Writing Executive Summaries. Effective Writing Center. University of Maryland; Kolin, Philip. Successful Writing at Work . 10th edition. (Boston, MA: Cengage Learning, 2013), p. 435-437; Moral, Mary. "Writing Recommendations and Executive Summaries." Keeping Good Companies 64 (June 2012): 274-278; Todorovic, Zelimir William and Marietta Wolczacka Frye. “Writing Effective Executive Summaries: An Interdisciplinary Examination.” In United States Association for Small Business and Entrepreneurship. Conference Proceedings . (Decatur, IL: United States Association for Small Business and Entrepreneurship, 2009): pp. 662-691.

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For many kinds of assignments, like a  literature review , you may be asked to offer a critique or review of a journal article. This is an opportunity for you as a scholar to offer your  qualified opinion  and  evaluation  of how another scholar has composed their article, argument, and research. That means you will be expected to go beyond a simple  summary  of the article and evaluate it on a deeper level. As a college student, this might sound intimidating. However, as you engage with the research process, you are becoming immersed in a particular topic, and your insights about the way that topic is presented are valuable and can contribute to the overall conversation surrounding your topic.

IMPORTANT NOTE!!

Some disciplines, like Criminal Justice, may only want you to summarize the article without including your opinion or evaluation. If your assignment is to summarize the article only, please see our literature review handout.

Before getting started on the critique, it is important to review the article thoroughly and critically. To do this, we recommend take notes,  annotating , and reading the article several times before critiquing. As you read, be sure to note important items like the thesis, purpose, research questions, hypotheses, methods, evidence, key findings, major conclusions, tone, and publication information. Depending on your writing context, some of these items may not be applicable.

Questions to Consider

To evaluate a source, consider some of the following questions. They are broken down into different categories, but answering these questions will help you consider what areas to examine. With each category, we recommend identifying the strengths and weaknesses in each since that is a critical part of evaluation.

Evaluating Purpose and Argument

• How well is the purpose made clear in the introduction through background/context and thesis?
• How well does the abstract represent and summarize the article’s major points and argument?
• How well does the objective of the experiment or of the observation fill a need for the field?
• How well is the argument/purpose articulated and discussed throughout the body of the text?
• How well does the discussion maintain cohesion?

Evaluating the Presentation/Organization of Information

• How appropriate and clear is the title of the article?
• Where could the author have benefited from expanding, condensing, or omitting ideas?
• How clear are the author’s statements? Challenge ambiguous statements.
• What underlying assumptions does the author have, and how does this affect the credibility or clarity of their article?
• How objective is the author in his or her discussion of the topic?
• How well does the organization fit the article’s purpose and articulate key goals?

Evaluating Methods

• How appropriate are the study design and methods for the purposes of the study?
• How detailed are the methods being described? Is the author leaving out important steps or considerations?
• Have the procedures been presented in enough detail to enable the reader to duplicate them?

Evaluating Data

• Scan and spot-check calculations. Are the statistical methods appropriate?
• Do you find any content repeated or duplicated?
• How many errors of fact and interpretation does the author include? (You can check on this by looking up the references the author cites).
• What pertinent literature has the author cited, and have they used this literature appropriately?

Following, we have an example of a summary and an evaluation of a research article. Note that in most literature review contexts, the summary and evaluation would be much shorter. This extended example shows the different ways a student can critique and write about an article.

Chik, A. (2012). Digital gameplay for autonomous foreign language learning: Gamers’ and language teachers’ perspectives. In H. Reinders (ed.),  Digital games in language learning and teaching  (pp. 95-114). Eastbourne, UK: Palgrave Macmillan.

Be sure to include the full citation either in a reference page or near your evaluation if writing an  annotated bibliography .

In Chik’s article “Digital Gameplay for Autonomous Foreign Language Learning: Gamers’ and Teachers’ Perspectives”, she explores the ways in which “digital gamers manage gaming and gaming-related activities to assume autonomy in their foreign language learning,” (96) which is presented in contrast to how teachers view the “pedagogical potential” of gaming. The research was described as an “umbrella project” consisting of two parts. The first part examined 34 language teachers’ perspectives who had limited experience with gaming (only five stated they played games regularly) (99). Their data was recorded through a survey, class discussion, and a seven-day gaming trial done by six teachers who recorded their reflections through personal blog posts. The second part explored undergraduate gaming habits of ten Hong Kong students who were regular gamers. Their habits were recorded through language learning histories, videotaped gaming sessions, blog entries of gaming practices, group discussion sessions, stimulated recall sessions on gaming videos, interviews with other gamers, and posts from online discussion forums. The research shows that while students recognize the educational potential of games and have seen benefits of it in their lives, the instructors overall do not see the positive impacts of gaming on foreign language learning.

The summary includes the article’s purpose, methods, results, discussion, and citations when necessary.

This article did a good job representing the undergraduate gamers’ voices through extended quotes and stories. Particularly for the data collection of the undergraduate gamers, there were many opportunities for an in-depth examination of their gaming practices and histories. However, the representation of the teachers in this study was very uneven when compared to the students. Not only were teachers labeled as numbers while the students picked out their own pseudonyms, but also when viewing the data collection, the undergraduate students were more closely examined in comparison to the teachers in the study. While the students have fifteen extended quotes describing their experiences in their research section, the teachers only have two of these instances in their section, which shows just how imbalanced the study is when presenting instructor voices.

Some research methods, like the recorded gaming sessions, were only used with students whereas teachers were only asked to blog about their gaming experiences. This creates a richer narrative for the students while also failing to give instructors the chance to have more nuanced perspectives. This lack of nuance also stems from the emphasis of the non-gamer teachers over the gamer teachers. The non-gamer teachers’ perspectives provide a stark contrast to the undergraduate gamer experiences and fits neatly with the narrative of teachers not valuing gaming as an educational tool. However, the study mentioned five teachers that were regular gamers whose perspectives are left to a short section at the end of the presentation of the teachers’ results. This was an opportunity to give the teacher group a more complex story, and the opportunity was entirely missed.

Additionally, the context of this study was not entirely clear. The instructors were recruited through a master’s level course, but the content of the course and the institution’s background is not discussed. Understanding this context helps us understand the course’s purpose(s) and how those purposes may have influenced the ways in which these teachers interpreted and saw games. It was also unclear how Chik was connected to this masters’ class and to the students. Why these particular teachers and students were recruited was not explicitly defined and also has the potential to skew results in a particular direction.

Overall, I was inclined to agree with the idea that students can benefit from language acquisition through gaming while instructors may not see the instructional value, but I believe the way the research was conducted and portrayed in this article made it very difficult to support Chik’s specific findings.

Some professors like you to begin an evaluation with something positive but isn’t always necessary.

The evaluation is clearly organized and uses transitional phrases when moving to a new topic.

This evaluation includes a summative statement that gives the overall impression of the article at the end, but this can also be placed at the beginning of the evaluation.

This evaluation mainly discusses the representation of data and methods. However, other areas, like organization, are open to critique.

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A critique asks you to evaluate an article and the author’s argument. You will need to look critically at what the author is claiming, evaluate the research methods, and look for possible problems with, or applications of, the researcher’s claims.

Introduction

Give an overview of the author’s main points and how the author supports those points. Explain what the author found and describe the process they used to arrive at this conclusion.

Body Paragraphs

Interpret the information from the article:

• Does the author review previous studies? Is current and relevant research used?
• What type of research was used – empirical studies, anecdotal material, or personal observations?
• Was the sample too small to generalize from?
• Was the participant group lacking in diversity (race, gender, age, education, socioeconomic status, etc.)
• For instance, volunteers gathered at a health food store might have different attitudes about nutrition than the population at large.
• How useful does this work seem to you? How does the author suggest the findings could be applied and how do you believe they could be applied?
• How could the study have been improved in your opinion?
• Does the author appear to have any biases (related to gender, race, class, or politics)?
• Is the writing clear and easy to follow? Does the author’s tone add to or detract from the article?
• How useful are the visuals (such as tables, charts, maps, photographs) included, if any? How do they help to illustrate the argument? Are they confusing or hard to read?
• What further research might be conducted on this subject?

Try to synthesize the pieces of your critique to emphasize your own main points about the author’s work, relating the researcher’s work to your own knowledge or to topics being discussed in your course.

From the Center for Academic Excellence (opens in a new window), University of Saint Joseph Connecticut

Additional Resources

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Writing an Article Critique (from The University of Arizona Global Campus Writing Center)

How to Critique an Article (from Essaypro.com)

How to Write an Article Critique (from EliteEditing.com.au)

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Ayodeji amobonye.

1 Department of Biotechnology and Food Science, Faculty of Applied Sciences, Durban University of Technology, P.O. Box 1334, KwaZulu-Natal, Durban 4000, South Africa

2 Writing Centre, Durban University of Technology, P.O. Box 1334 KwaZulu-Natal, Durban 4000, South Africa

Japareng Lalung

3 School of Industrial Technology, Universiti Sains Malaysia, Gelugor 11800, Pulau Pinang, Malaysia

Santhosh Pillai

Associated data.

The data and materials that support the findings of this study are available from the corresponding author upon reasonable request.

Review articles present comprehensive overview of relevant literature on specific themes and synthesise the studies related to these themes, with the aim of strengthening the foundation of knowledge and facilitating theory development. The significance of review articles in science is immeasurable as both students and researchers rely on these articles as the starting point for their research. Interestingly, many postgraduate students are expected to write review articles for journal publications as a way of demonstrating their ability to contribute to new knowledge in their respective fields. However, there is no comprehensive instructional framework to guide them on how to analyse and synthesise the literature in their niches into publishable review articles. The dearth of ample guidance or explicit training results in students having to learn all by themselves, usually by trial and error, which often leads to high rejection rates from publishing houses. Therefore, this article seeks to identify these challenges from a beginner's perspective and strives to plug the identified gaps and discrepancies. Thus, the purpose of this paper is to serve as a systematic guide for emerging scientists and to summarise the most important information on how to write and structure a publishable review article.

1. Introduction

Early scientists, spanning from the Ancient Egyptian civilization to the Scientific Revolution of the 16 th /17 th century, based their research on intuitions, personal observations, and personal insights. Thus, less time was spent on background reading as there was not much literature to refer to. This is well illustrated in the case of Sir Isaac Newton's apple tree and the theory of gravity, as well as Gregor Mendel's pea plants and the theory of inheritance. However, with the astronomical expansion in scientific knowledge and the emergence of the information age in the last century, new ideas are now being built on previously published works, thus the periodic need to appraise the huge amount of already published literature [ 1 ]. According to Birkle et al. [ 2 ], the Web of Science—an authoritative database of research publications and citations—covered more than 80 million scholarly materials. Hence, a critical review of prior and relevant literature is indispensable for any research endeavour as it provides the necessary framework needed for synthesising new knowledge and for highlighting new insights and perspectives [ 3 ].

Review papers are generally considered secondary research publications that sum up already existing works on a particular research topic or question and relate them to the current status of the topic. This makes review articles distinctly different from scientific research papers. While the primary aim of the latter is to develop new arguments by reporting original research, the former is focused on summarising and synthesising previous ideas, studies, and arguments, without adding new experimental contributions. Review articles basically describe the content and quality of knowledge that are currently available, with a special focus on the significance of the previous works. To this end, a review article cannot simply reiterate a subject matter, but it must contribute to the field of knowledge by synthesising available materials and offering a scholarly critique of theory [ 4 ]. Typically, these articles critically analyse both quantitative and qualitative studies by scrutinising experimental results, the discussion of the experimental data, and in some instances, previous review articles to propose new working theories. Thus, a review article is more than a mere exhaustive compilation of all that has been published on a topic; it must be a balanced, informative, perspective, and unbiased compendium of previous studies which may also include contrasting findings, inconsistencies, and conventional and current views on the subject [ 5 ].

Hence, the essence of a review article is measured by what is achieved, what is discovered, and how information is communicated to the reader [ 6 ]. According to Steward [ 7 ], a good literature review should be analytical, critical, comprehensive, selective, relevant, synthetic, and fully referenced. On the other hand, a review article is considered to be inadequate if it is lacking in focus or outcome, overgeneralised, opinionated, unbalanced, and uncritical [ 7 ]. Most review papers fail to meet these standards and thus can be viewed as mere summaries of previous works in a particular field of study. In one of the few studies that assessed the quality of review articles, none of the 50 papers that were analysed met the predefined criteria for a good review [ 8 ]. However, beginners must also realise that there is no bad writing in the true sense; there is only writing in evolution and under refinement. Literally, every piece of writing can be improved upon, right from the first draft until the final published manuscript. Hence, a paper can only be referred to as bad and unfixable when the author is not open to corrections or when the writer gives up on it.

According to Peat et al. [ 9 ], “everything is easy when you know how,” a maxim which applies to scientific writing in general and review writing in particular. In this regard, the authors emphasized that the writer should be open to learning and should also follow established rules instead of following a blind trial-and-error approach. In contrast to the popular belief that review articles should only be written by experienced scientists and researchers, recent trends have shown that many early-career scientists, especially postgraduate students, are currently expected to write review articles during the course of their studies. However, these scholars have little or no access to formal training on how to analyse and synthesise the research literature in their respective fields [ 10 ]. Consequently, students seeking guidance on how to write or improve their literature reviews are less likely to find published works on the subject, particularly in the science fields. Although various publications have dealt with the challenges of searching for literature, or writing literature reviews for dissertation/thesis purposes, there is little or no information on how to write a comprehensive review article for publication. In addition to the paucity of published information to guide the potential author, the lack of understanding of what constitutes a review paper compounds their challenges. Thus, the purpose of this paper is to serve as a guide for writing review papers for journal publishing. This work draws on the experience of the authors to assist early-career scientists/researchers in the “hard skill” of authoring review articles. Even though there is no single path to writing scientifically, or to writing reviews in particular, this paper attempts to simplify the process by looking at this subject from a beginner's perspective. Hence, this paper highlights the differences between the types of review articles in the sciences while also explaining the needs and purpose of writing review articles. Furthermore, it presents details on how to search for the literature as well as how to structure the manuscript to produce logical and coherent outputs. It is hoped that this work will ease prospective scientific writers into the challenging but rewarding art of writing review articles.

2. Benefits of Review Articles to the Author

Analysing literature gives an overview of the “WHs”: WHat has been reported in a particular field or topic, WHo the key writers are, WHat are the prevailing theories and hypotheses, WHat questions are being asked (and answered), and WHat methods and methodologies are appropriate and useful [ 11 ]. For new or aspiring researchers in a particular field, it can be quite challenging to get a comprehensive overview of their respective fields, especially the historical trends and what has been studied previously. As such, the importance of review articles to knowledge appraisal and contribution cannot be overemphasised, which is reflected in the constant demand for such articles in the research community. However, it is also important for the author, especially the first-time author, to recognise the importance of his/her investing time and effort into writing a quality review article.

Generally, literature reviews are undertaken for many reasons, mainly for publication and for dissertation purposes. The major purpose of literature reviews is to provide direction and information for the improvement of scientific knowledge. They also form a significant component in the research process and in academic assessment [ 12 ]. There may be, however, a thin line between a dissertation literature review and a published review article, given that with some modifications, a literature review can be transformed into a legitimate and publishable scholarly document. According to Gülpınar and Güçlü [ 6 ], the basic motivation for writing a review article is to make a comprehensive synthesis of the most appropriate literature on a specific research inquiry or topic. Thus, conducting a literature review assists in demonstrating the author's knowledge about a particular field of study, which may include but not be limited to its history, theories, key variables, vocabulary, phenomena, and methodologies [ 10 ]. Furthermore, publishing reviews is beneficial as it permits the researchers to examine different questions and, as a result, enhances the depth and diversity of their scientific reasoning [ 1 ]. In addition, writing review articles allows researchers to share insights with the scientific community while identifying knowledge gaps to be addressed in future research. The review writing process can also be a useful tool in training early-career scientists in leadership, coordination, project management, and other important soft skills necessary for success in the research world [ 13 ]. Another important reason for authoring reviews is that such publications have been observed to be remarkably influential, extending the reach of an author in multiple folds of what can be achieved by primary research papers [ 1 ]. The trend in science is for authors to receive more citations from their review articles than from their original research articles. According to Miranda and Garcia-Carpintero [ 14 ], review articles are, on average, three times more frequently cited than original research articles; they also asserted that a 20% increase in review authorship could result in a 40–80% increase in citations of the author. As a result, writing reviews can significantly impact a researcher's citation output and serve as a valuable channel to reach a wider scientific audience. In addition, the references cited in a review article also provide the reader with an opportunity to dig deeper into the topic of interest. Thus, review articles can serve as a valuable repository for consultation, increasing the visibility of the authors and resulting in more citations.

3. Types of Review Articles

The first step in writing a good literature review is to decide on the particular type of review to be written; hence, it is important to distinguish and understand the various types of review articles. Although scientific review articles have been classified according to various schemes, however, they are broadly categorised into narrative reviews, systematic reviews, and meta-analyses [ 15 ]. It was observed that more authors—as well as publishers—were leaning towards systematic reviews and meta-analysis while downplaying narrative reviews; however, the three serve different aims and should all be considered equally important in science [ 1 ]. Bibliometric reviews and patent reviews, which are closely related to meta-analysis, have also gained significant attention recently. However, from another angle, a review could also be of two types. In the first class, authors could deal with a widely studied topic where there is already an accumulated body of knowledge that requires analysis and synthesis [ 3 ]. At the other end of the spectrum, the authors may have to address an emerging issue that would benefit from exposure to potential theoretical foundations; hence, their contribution would arise from the fresh theoretical foundations proposed in developing a conceptual model [ 3 ].

3.1. Narrative Reviews

Narrative reviewers are mainly focused on providing clarification and critical analysis on a particular topic or body of literature through interpretative synthesis, creativity, and expert judgement. According to Green et al. [ 16 ], a narrative review can be in the form of editorials, commentaries, and narrative overviews. However, editorials and commentaries are usually expert opinions; hence, a beginner is more likely to write a narrative overview, which is more general and is also referred to as an unsystematic narrative review. Similarly, the literature review section of most dissertations and empirical papers is typically narrative in nature. Typically, narrative reviews combine results from studies that may have different methodologies to address different questions or to formulate a broad theoretical formulation [ 1 ]. They are largely integrative as strong focus is placed on the assimilation and synthesis of various aspects in the review, which may involve comparing and contrasting research findings or deriving structured implications [ 17 ]. In addition, they are also qualitative studies because they do not follow strict selection processes; hence, choosing publications is relatively more subjective and unsystematic [ 18 ]. However, despite their popularity, there are concerns about their inherent subjectivity. In many instances, when the supporting data for narrative reviews are examined more closely, the evaluations provided by the author(s) become quite questionable [ 19 ]. Nevertheless, if the goal of the author is to formulate a new theory that connects diverse strands of research, a narrative method is most appropriate.

3.2. Systematic Reviews

In contrast to narrative reviews, which are generally descriptive, systematic reviews employ a systematic approach to summarise evidence on research questions. Hence, systematic reviews make use of precise and rigorous criteria to identify, evaluate, and subsequently synthesise all relevant literature on a particular topic [ 12 , 20 ]. As a result, systematic reviews are more likely to inspire research ideas by identifying knowledge gaps or inconsistencies, thus helping the researcher to clearly define the research hypotheses or questions [ 21 ]. Furthermore, systematic reviews may serve as independent research projects in their own right, as they follow a defined methodology to search and combine reliable results to synthesise a new database that can be used for a variety of purposes [ 22 ]. Typically, the peculiarities of the individual reviewer, different search engines, and information databases used all ensure that no two searches will yield the same systematic results even if the searches are conducted simultaneously and under identical criteria [ 11 ]. Hence, attempts are made at standardising the exercise via specific methods that would limit bias and chance effects, prevent duplications, and provide more accurate results upon which conclusions and decisions can be made.

The most established of these methods is the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines which objectively defined statements, guidelines, reporting checklists, and flowcharts for undertaking systematic reviews as well as meta-analysis [ 23 ]. Though mainly designed for research in medical sciences, the PRISMA approach has gained wide acceptance in other fields of science and is based on eight fundamental propositions. These include the explicit definition of the review question, an unambiguous outline of the study protocol, an objective and exhaustive systematic review of reputable literature, and an unambiguous identification of included literature based on defined selection criteria [ 24 ]. Other considerations include an unbiased appraisal of the quality of the selected studies (literature), organic synthesis of the evidence of the study, preparation of the manuscript based on the reporting guidelines, and periodic update of the review as new data emerge [ 24 ]. Other methods such as PRISMA-P (Preferred Reporting Items for Systematic review and Meta-Analysis Protocols), MOOSE (Meta-analysis Of Observational Studies in Epidemiology), and ROSES (Reporting Standards for Systematic Evidence Syntheses) have since been developed for systematic reviews (and meta-analysis), with most of them being derived from PRISMA.

Consequently, systematic reviews—unlike narrative reviews—must contain a methodology section which in addition to all that was highlighted above must fully describe the precise criteria used in formulating the research question and setting the inclusion or exclusion criteria used in selecting/accessing the literature. Similarly, the criteria for evaluating the quality of the literature included in the review as well as for analysing, synthesising, and disseminating the findings must be fully described in the methodology section.

3.3. Meta-Analysis

Meta-analyses are considered as more specialised forms of systematic reviews. Generally, they combine the results of many studies that use similar or closely related methods to address the same question or share a common quantitative evaluation method [ 25 ]. However, meta-analyses are also a step higher than other systematic reviews as they are focused on numerical data and involve the use of statistics in evaluating different studies and synthesising new knowledge. The major advantage of this type of review is the increased statistical power leading to more reliable results for inferring modest associations and a more comprehensive understanding of the true impact of a research study [ 26 ]. Unlike in traditional systematic reviews, research topics covered in meta-analyses must be mature enough to allow the inclusion of sufficient homogeneous empirical research in terms of subjects, interventions, and outcomes [ 27 , 28 ].

Being an advanced form of systematic review, meta-analyses must also have a distinct methodology section; hence, the standard procedures involved in the traditional systematic review (especially PRISMA) also apply in meta-analyses [ 23 ]. In addition to the common steps in formulating systematic reviews, meta-analyses are required to describe how nested and missing data are handled, the effect observed in each study, the confidence interval associated with each synthesised effect, and any potential for bias presented within the sample(s) [ 17 ]. According to Paul and Barari [ 28 ], a meta-analysis must also detail the final sample, the meta-analytic model, and the overall analysis, moderator analysis, and software employed. While the overall analysis involves the statistical characterization of the relationships between variables in the meta-analytic framework and their significance, the moderator analysis defines the different variables that may affect variations in the original studies [ 28 , 29 ]. It must also be noted that the accuracy and reliability of meta-analyses have both been significantly enhanced by the incorporation of statistical approaches such as Bayesian analysis [ 30 ], network analysis [ 31 ], and more recently, machine learning [ 32 ].

3.4. Bibliometric Review

A bibliometric review, commonly referred to as bibliometric analysis, is a systematic evaluation of published works within a specific field or discipline [ 33 ]. This bibliometric methodology involves the use of quantitative methods to analyse bibliometric data such as the characteristics and numbers of publications, units of citations, authorship, co-authorship, and journal impact factors [ 34 ]. Academics use bibliometric analysis with different objectives in mind, which includes uncovering emerging trends in article and journal performance, elaborating collaboration patterns and research constituents, evaluating the impact and influence of particular authors, publications, or research groups, and highlighting the intellectual framework of a certain field [ 35 ]. It is also used to inform policy and decision-making. Similarly to meta-analysis, bibliometric reviews rely upon quantitative techniques, thus avoiding the interpretation bias that could arise from the qualitative techniques of other types of reviews [ 36 ]. However, while bibliometric analysis synthesises the bibliometric and intellectual structure of a field by examining the social and structural linkages between various research parts, meta-analysis focuses on summarising empirical evidence by probing the direction and strength of effects and relationships among variables, especially in open research questions [ 37 , 38 ]. However, similarly to systematic review and meta-analysis, a bibliometric review also requires a well-detailed methodology section. The amount of data to be analysed in bibliometric analysis is quite massive, running to hundreds and tens of thousands in some cases. Although the data are objective in nature (e.g., number of citations and publications and occurrences of keywords and topics), the interpretation is usually carried out through both objective (e.g., performance analysis) and subjective (e.g., thematic analysis) evaluations [ 35 ]. However, the invention and availability of bibliometric software such as BibExcel, Gephi, Leximancer, and VOSviewer and scientific databases such as Dimensions, Web of Science, and Scopus have made this type of analysis more feasible.

3.5. Patent Review

Patent reviews provide a comprehensive analysis and critique of a specific patent or a group of related patents, thus presenting a concise understanding of the technology or innovation that is covered by the patent [ 39 ]. This type of article is useful for researchers as it also enhances their understanding of the legal, technical, and commercial aspects of an intellectual property/innovation; in addition, it is also important for stakeholders outside the research community including IP (intellectual property) specialists, legal professionals, and technology-transfer officers [ 40 ]. Typically, patent reviews encompass the scope, background, claims, legal implications, technical specifications, and potential commercial applications of the patent(s). The article may also include a discussion of the patent's strengths and weaknesses, as well as its potential impact on the industry or field in which it operates. Most times, reviews are time specified, they may be regionalised, and the data are usually retrieved via patent searches on databases such as that of the European Patent Office ( https://www.epo.org/searching.html ), United States Patent and Trademark Office ( https://patft.uspto.gov/ ), the World Intellectual Property Organization's PATENTSCOPE ( https://patentscope.wipo.int/search/en/structuredSearch.jsf ), Google Patent ( https://www.google.com/?tbm=pts ), and China National Intellectual Property Administration ( https://pss-system.cponline.cnipa.gov.cn/conventionalSearch ). According to Cerimi et al. [ 41 ], the retrieved data and analysed may include the patent number, patent status, filing date, application date, grant dates, inventor, assignee, and pending applications. While data analysis is usually carried out by general data software such as Microsoft Excel, an intelligence software solely dedicated to patent research and analysis, Orbit Intelligence has been found to be more efficient [ 39 ]. It is also mandatory to include a methodology section in a patent review, and this should be explicit, thorough, and precise to allow a clear understanding of how the analysis was carried out and how the conclusions were arrived at.

4. Searching Literature

One of the most challenging tasks in writing a review article on a subject is the search for relevant literature to populate the manuscript as the author is required to garner information from an endless number of sources. This is even more challenging as research outputs have been increasing astronomically, especially in the last decade, with thousands of new articles published annually in various fields. It is therefore imperative that the author must not only be aware of the overall trajectory in a field of investigation but must also be cognizant of recent studies so as not to publish outdated research or review articles. Basically, the search for the literature involves a coherent conceptual structuring of the topic itself and a thorough collation of evidence under the common themes which might reflect the histories, conflicts, standoffs, revolutions, and/or evolutions in the field [ 7 ]. To start the search process, the author must carefully identify and select broad keywords relevant to the subject; subsequently, the keywords should be developed to refine the search into specific subheadings that would facilitate the structure of the review.

Two main tactics have been identified for searching the literature, namely, systematic and snowballing [ 42 ]. The systematic approach involves searching literature with specific keywords (for example, cancer, antioxidant, and nanoparticles), which leads to an almost unmanageable and overwhelming list of possible sources [ 43 ]. The snowballing approach, however, involves the identification of a particular publication, followed by the compilation of a bibliography of articles based on the reference list of the identified publication [ 44 ]. Many times, it might be necessary to combine both approaches, but irrespective, the author must keep an accurate track and record of papers cited in the search. A simple and efficient strategy for populating the bibliography of review articles is to go through the abstract (and sometimes the conclusion) of a paper; if the abstract is related to the topic of discourse, the author might go ahead and read the entire article; otherwise, he/she is advised to move on [ 45 ]. Winchester and Salji [ 5 ] noted that to learn the background of the subject/topic to be reviewed, starting literature searches with academic textbooks or published review articles is imperative, especially for beginners. Furthermore, it would also assist in compiling the list of keywords, identifying areas of further exploration, and providing a glimpse of the current state of the research. However, past reviews ideally are not to serve as the foundation of a new review as they are written from someone else's viewpoint, which might have been tainted with some bias. Fortunately, the accessibility and search for the literature have been made relatively easier than they were a few decades ago as the current information age has placed an enormous volume of knowledge right at our fingertips [ 46 ]. Nevertheless, when gathering the literature from the Internet, authors should exercise utmost caution as much of the information may not be verified or peer-reviewed and thus may be unregulated and unreliable. For instance, Wikipedia, despite being a large repository of information with more than 6.7 million articles in the English language alone, is considered unreliable for scientific literature reviews, due to its openness to public editing [ 47 ]. However, in addition to peer-reviewed journal publications—which are most ideal—reviews can also be drawn from a wide range of other sources such as technical documents, in-house reports, conference abstracts, and conference proceedings. Similarly, “Google Scholar”—as against “Google” and other general search engines—is more appropriate as its searches are restricted to only academic articles produced by scholarly societies or/and publishers [ 48 ]. Furthermore, the various electronic databases, such as ScienceDirect, Web of Science, PubMed, and MEDLINE, many of which focus on specific fields of research, are also ideal options [ 49 ]. Advancement in computer indexing has remarkably expanded the ease and ability to search large databases for every potentially relevant article. In addition to searching by topic, literature search can be modified by time; however, there must be a balance between old papers and recent ones. The general consensus in science is that publications less than five years old are considered recent.

It is important, especially in systematic reviews and meta-analyses, that the specific method of running the computer searches be properly documented as there is the need to include this in the method (methodology) section of such papers. Typically, the method details the keywords, databases explored, search terms used, and the inclusion/exclusion criteria applied in the selection of data and any other specific decision/criteria. All of these will ensure the reproducibility and thoroughness of the search and the selection procedure. However, Randolph [ 10 ] noted that Internet searches might not give the exhaustive list of articles needed for a review article; hence, it is advised that authors search through the reference lists of articles that were obtained initially from the Internet search. After determining the relevant articles from the list, the author should read through the references of these articles and repeat the cycle until saturation is reached [ 10 ]. After populating the articles needed for the literature review, the next step is to analyse them individually and in their whole entirety. A systematic approach to this is to identify the key information within the papers, examine them in depth, and synthesise original perspectives by integrating the information and making inferences based on the findings. In this regard, it is imperative to link one source to the other in a logical manner, for instance, taking note of studies with similar methodologies, papers that agree, or results that are contradictory [ 42 ].

5. Structuring the Review Article

The title and abstract are the main selling points of a review article, as most readers will only peruse these two elements and usually go on to read the full paper if they are drawn in by either or both of the two. Tullu [ 50 ] recommends that the title of a scientific paper “should be descriptive, direct, accurate, appropriate, interesting, concise, precise, unique, and not be misleading.” In addition to providing “just enough details” to entice the reader, words in the titles are also used by electronic databases, journal websites, and search engines to index and retrieve a particular paper during a search [ 51 ]. Titles are of different types and must be chosen according to the topic under review. They are generally classified as descriptive, declarative, or interrogative and can also be grouped into compound, nominal, or full-sentence titles [ 50 ]. The subject of these categorisations has been extensively discussed in many articles; however, the reader must also be aware of the compound titles, which usually contain a main title and a subtitle. Typically, subtitles provide additional context—to the main title—and they may specify the geographic scope of the research, research methodology, or sample size [ 52 ].

Just like primary research articles, there are many debates about the optimum length of a review article's title. However, the general consensus is to keep the title as brief as possible while not being too general. A title length between 10 and 15 words is recommended, since longer titles can be more challenging to comprehend. Paiva et al. [ 53 ] observed that articles which contain 95 characters or less get more views and citations. However, emphasis must be placed on conciseness as the audience will be more satisfied if they can understand what exactly the review has contributed to the field, rather than just a hint about the general topic area. Authors should also endeavour to stick to the journal's specific requirements, especially regarding the length of the title and what they should or should not contain [ 9 ]. Thus, avoidance of filler words such as “a review on/of,” “an observation of,” or “a study of” is a very simple way to limit title length. In addition, abbreviations or acronyms should be avoided in the title, except the standard or commonly interpreted ones such as AIDS, DNA, HIV, and RNA. In summary, to write an effective title, the authors should consider the following points. What is the paper about? What was the methodology used? What were the highlights and major conclusions? Subsequently, the author should list all the keywords from these answers, construct a sentence from these keywords, and finally delete all redundant words from the sentence title. It is also possible to gain some ideas by scanning indices and article titles in major journals in the field. It is important to emphasise that a title is not chosen and set in stone, and the title is most likely to be continually revised and adjusted until the end of the writing process.

5.2. Abstract

The abstract, also referred to as the synopsis, is a summary of the full research paper; it is typically independent and can stand alone. For most readers, a publication does not exist beyond the abstract, partly because abstracts are often the only section of a paper that is made available to the readers at no cost, whereas the full paper may attract a payment or subscription [ 54 ]. Thus, the abstract is supposed to set the tone for the few readers who wish to read the rest of the paper. It has also been noted that the abstract gives the first impression of a research work to journal editors, conference scientific committees, or referees, who might outright reject the paper if the abstract is poorly written or inadequate [ 50 ]. Hence, it is imperative that the abstract succinctly represents the entire paper and projects it positively. Just like the title, abstracts have to be balanced, comprehensive, concise, functional, independent, precise, scholarly, and unbiased and not be misleading [ 55 ]. Basically, the abstract should be formulated using keywords from all the sections of the main manuscript. Thus, it is pertinent that the abstract conveys the focus, key message, rationale, and novelty of the paper without any compromise or exaggeration. Furthermore, the abstract must be consistent with the rest of the paper; as basic as this instruction might sound, it is not to be taken for granted. For example, a study by Vrijhoef and Steuten [ 56 ] revealed that 18–68% of 264 abstracts from some scientific journals contained information that was inconsistent with the main body of the publications.

Abstracts can either be structured or unstructured; in addition, they can further be classified as either descriptive or informative. Unstructured abstracts, which are used by many scientific journals, are free flowing with no predefined subheadings, while structured abstracts have specific subheadings/subsections under which the abstract needs to be composed. Structured abstracts have been noted to be more informative and are usually divided into subsections which include the study background/introduction, objectives, methodology design, results, and conclusions [ 57 ]. No matter the style chosen, the author must carefully conform to the instructions provided by the potential journal of submission, which may include but are not limited to the format, font size/style, word limit, and subheadings [ 58 ]. The word limit for abstracts in most scientific journals is typically between 150 and 300 words. It is also a general rule that abstracts do not contain any references whatsoever.

Typically, an abstract should be written in the active voice, and there is no such thing as a perfect abstract as it could always be improved on. It is advised that the author first makes an initial draft which would contain all the essential parts of the paper, which could then be polished subsequently. The draft should begin with a brief background which would lead to the research questions. It might also include a general overview of the methodology used (if applicable) and importantly, the major results/observations/highlights of the review paper. The abstract should end with one or few sentences about any implications, perspectives, or future research that may be developed from the review exercise. Finally, the authors should eliminate redundant words and edit the abstract to the correct word count permitted by the journal [ 59 ]. It is always beneficial to read previous abstracts published in the intended journal, related topics/subjects from other journals, and other reputable sources. Furthermore, the author should endeavour to get feedback on the abstract especially from peers and co-authors. As the abstract is the face of the whole paper, it is best that it is the last section to be finalised, as by this time, the author would have developed a clearer understanding of the findings and conclusions of the entire paper.

5.3. Graphical Abstracts

Since the mid-2000s, an increasing number of journals now require authors to provide a graphical abstract (GA) in addition to the traditional written abstract, to increase the accessibility of scientific publications to readers [ 60 ]. A study showed that publications with GA performed better than those without it, when the abstract views, total citations, and downloads were compared [ 61 ]. However, the GA should provide “a single, concise pictorial, and visual summary of the main findings of an article” [ 62 ]. Although they are meant to be a stand-alone summary of the whole paper, it has been noted that they are not so easily comprehensible without having read through the traditionally written abstract [ 63 ]. It is important to note that, like traditional abstracts, many reputable journals require GAs to adhere to certain specifications such as colour, dimension, quality, file size, and file format (usually JPEG/JPG, PDF, PNG, or TIFF). In addition, it is imperative to use engaging and accurate figures, all of which must be synthesised in order to accurately reflect the key message of the paper. Currently, there are various online or downloadable graphical tools that can be used for creating GAs, such as Microsoft Paint or PowerPoint, Mindthegraph, ChemDraw, CorelDraw, and BioRender.

5.4. Keywords

As a standard practice, journals require authors to select 4–8 keywords (or phrases), which are typically listed below the abstract. A good set of keywords will enable indexers and search engines to find relevant papers more easily and can be considered as a very concise abstract [ 64 ]. According to Dewan and Gupta [ 51 ], the selection of appropriate keywords will significantly enhance the retrieval, accession, and consequently, the citation of the review paper. Ideally, keywords can be variants of the terms/phrases used in the title, the abstract, and the main text, but they should ideally not be the exact words in the main title. Choosing the most appropriate keywords for a review article involves listing down the key terms and phrases in the article, including abbreviations. Subsequently, a quick review of the glossary/vocabulary/term list or indexing standard in the specific discipline will assist in selecting the best and most precise keywords that match those used in the databases from the list drawn. In addition, the keywords should not be broad or general terms (e.g., DNA, biology, and enzymes) but must be specific to the field or subfield of study as well as to the particular paper [ 65 ].

5.5. Introduction

The introduction of an article is the first major section of the manuscript, and it presents basic information to the reader without compelling them to study past publications. In addition, the introduction directs the reader to the main arguments and points developed in the main body of the article while clarifying the current state of knowledge in that particular area of research [ 12 ]. The introduction part of a review article is usually sectionalised into background information, a description of the main topic and finally a statement of the main purpose of the review [ 66 ]. Authors may begin the introduction with brief general statements—which provide background knowledge on the subject matter—that lead to more specific ones [ 67 ]. It is at this point that the reader's attention must be caught as the background knowledge must highlight the importance and justification for the subject being discussed, while also identifying the major problem to be addressed [ 68 ]. In addition, the background should be broad enough to attract even nonspecialists in the field to maximise the impact and widen the reach of the article. All of these should be done in the light of current literature; however, old references may also be used for historical purposes. A very important aspect of the introduction is clearly stating and establishing the research problem(s) and how a review of the particular topic contributes to those problem(s). Thus, the research gap which the paper intends to fill, the limitations of previous works and past reviews, if available, and the new knowledge to be contributed must all be highlighted. Inadequate information and the inability to clarify the problem will keep readers (who have the desire to obtain new information) from reading beyond the introduction [ 69 ]. It is also pertinent that the author establishes the purpose of reviewing the literature and defines the scope as well as the major synthesised point of view. Furthermore, a brief insight into the criteria used to select, evaluate, and analyse the literature, as well as the outline or sequence of the review, should be provided in the introduction. Subsequently, the specific objectives of the review article must be presented. The last part of the “introduction” section should focus on the solution, the way forward, the recommendations, and the further areas of research as deduced from the whole review process. According to DeMaria [ 70 ], clearly expressed or recommended solutions to an explicitly revealed problem are very important for the wholesomeness of the “introduction” section. It is believed that following these steps will give readers the opportunity to track the problems and the corresponding solution from their own perspective in the light of current literature. As against some suggestions that the introduction should be written only in present tenses, it is also believed that it could be done with other tenses in addition to the present tense. In this regard, general facts should be written in the present tense, specific research/work should be in the past tense, while the concluding statement should be in the past perfect or simple past. Furthermore, many of the abbreviations to be used in the rest of the manuscript and their explanations should be defined in this section.

5.6. Methodology

Writing a review article is equivalent to conducting a research study, with the information gathered by the author (reviewer) representing the data. Like all major studies, it involves conceptualisation, planning, implementation, and dissemination [ 71 ], all of which may be detailed in a methodology section, if necessary. Hence, the methodological section of a review paper (which can also be referred to as the review protocol) details how the relevant literature was selected and how it was analysed as well as summarised. The selection details may include, but are not limited to, the database consulted and the specific search terms used together with the inclusion/exclusion criteria. As earlier highlighted in Section 3 , a description of the methodology is required for all types of reviews except for narrative reviews. This is partly because unlike narrative reviews, all other review articles follow systematic approaches which must ensure significant reproducibility [ 72 ]. Therefore, where necessary, the methods of data extraction from the literature and data synthesis must also be highlighted as well. In some cases, it is important to show how data were combined by highlighting the statistical methods used, measures of effect, and tests performed, as well as demonstrating heterogeneity and publication bias [ 73 ].

The methodology should also detail the major databases consulted during the literature search, e.g., Dimensions, ScienceDirect, Web of Science, MEDLINE, and PubMed. For meta-analysis, it is imperative to highlight the software and/or package used, which could include Comprehensive Meta-Analysis, OpenMEE, Review Manager (RevMan), Stata, SAS, and R Studio. It is also necessary to state the mathematical methods used for the analysis; examples of these include the Bayesian analysis, the Mantel–Haenszel method, and the inverse variance method. The methodology should also state the number of authors that carried out the initial review stage of the study, as it has been recommended that at least two reviews should be done blindly and in parallel, especially when it comes to the acquisition and synthesis of data [ 74 ]. Finally, the quality and validity assessment of the publication used in the review must be stated and well clarified [ 73 ].

5.7. Main Body of the Review

Ideally, the main body of a publishable review should answer these questions: What is new (contribution)? Why so (logic)? So what (impact)? How well it is done (thoroughness)? The flow of the main body of a review article must be well organised to adequately maintain the attention of the readers as well as guide them through the section. It is recommended that the author should consider drawing a conceptual scheme of the main body first, using methods such as mind-mapping. This will help create a logical flow of thought and presentation, while also linking the various sections of the manuscript together. According to Moreira [ 75 ], “reports do not simply yield their findings, rather reviewers make them yield,” and thus, it is the author's responsibility to transform “resistant” texts into “docile” texts. Hence, after the search for the literature, the essential themes and key concepts of the review paper must be identified and synthesised together. This synthesis primarily involves creating hypotheses about the relationships between the concepts with the aim of increasing the understanding of the topic being reviewed. The important information from the various sources should not only be summarised, but the significance of studies must be related back to the initial question(s) posed by the review article. Furthermore, MacLure [ 76 ] stated that data are not just to be plainly “extracted intact” and “used exactly as extracted,” but must be modified, reconfigured, transformed, transposed, converted, tabulated, graphed, or manipulated to enable synthesis, combination, and comparison. Therefore, different pieces of information must be extracted from the reports in which they were previously deposited and then refined into the body of the new article [ 75 ]. To this end, adequate comparison and combination might require that “qualitative data be quantified” or/and “quantitative data may be qualitized” [ 77 ]. In order to accomplish all of these goals, the author may have to transform, paraphrase, generalize, specify, and reorder the text [ 78 ]. For comprehensiveness, the body paragraphs should be arranged in a similar order as it was initially stated in the abstract or/and introduction. Thus, the main body could be divided into thematic areas, each of which could be independently comprehensive and treated as a mini review. Similarly, the sections can also be arranged chronologically depending on the focus of the review. Furthermore, the abstractions should proceed from a wider general view of the literature being reviewed and then be narrowed down to the specifics. In the process, deep insights should also be provided between the topic of the review and the wider subject area, e.g., fungal enzymes and enzymes in general. The abstractions must also be discussed in more detail by presenting more specific information from the identified sources (with proper citations of course!). For example, it is important to identify and highlight contrary findings and rival interpretations as well as to point out areas of agreement or debate among different bodies of literature. Often, there are previous reviews on the same topic/concept; however, this does not prevent a new author from writing one on the same topic, especially if the previous reviews were written many years ago. However, it is important that the body of the new manuscript be written from a new angle that was not adequately covered in the past reviews and should also incorporate new studies that have accumulated since the last review(s). In addition, the new review might also highlight the approaches, limitations, and conclusions of the past studies. But the authors must not be excessively critical of the past reviews as this is regarded by many authors as a sign of poor professionalism [ 3 , 79 ]. Daft [ 79 ] emphasized that it is more important for a reviewer to state how their research builds on previous work instead of outright claiming that previous works are incompetent and inadequate. However, if a series of related papers on one topic have a common error or research flaw that needs rectification, the reviewer must point this out with the aim of moving the field forward [ 3 ]. Like every other scientific paper, the main body of a review article also needs to be consistent in style, for example, in the choice of passive vs. active voice and present vs. past tense. It is also important to note that tables and figures can serve as a powerful tool for highlighting key points in the body of the review, and they are now considered core elements of reviews. For more guidance and insights into what should make up the contents of a good review article, readers are also advised to get familiarised with the Boote and Beile [ 80 ] literature review scoring rubric as well as the review article checklist of Short [ 81 ].

5.8. Tables and Figures

An ideal review article should be logically structured and efficiently utilise illustrations, in the form of tables and figures, to convey the key findings and relationships in the study. According to Tay [ 13 ], illustrations often take a secondary role in review papers when compared to primary research papers which are focused on illustrations. However, illustrations are very important in review articles as they can serve as succinct means of communicating major findings and insights. Franzblau and Chung [ 82 ] pointed out that illustrations serve three major purposes in a scientific article: they simplify complex data and relationships for better understanding, they minimise reading time by summarising and bringing to focus on the key findings (or trends), and last, they help to reduce the overall word count. Hence, inserting and constructing illustrations in a review article is as meticulous as it is important. However, important decisions should be made on whether the charts, figures, or tables to be potentially inserted in the manuscript are indeed needed and how best to design them [ 83 ]. Illustrations should enhance the text while providing necessary information; thus, the information described in illustrations should not contradict that in the main text and should also not be a repetition of texts [ 84 ]. Furthermore, illustrations must be autonomous, meaning they ought to be intelligible without having to read the text portion of the manuscript; thus, the reader does not have to flip back and forth between the illustration and the main text in order to understand it [ 85 ]. It should be noted that tables or figures that directly reiterate the main text or contain extraneous information will only make a mess of the manuscript and discourage readers [ 86 ].

Kotz and Cals [ 87 ] recommend that the layout of tables and figures should be carefully designed in a clear manner with suitable layouts, which will allow them to be referred to logically and chronologically in the text. In addition, illustrations should only contain simple text, as lengthy details would contradict their initial objective, which was to provide simple examples or an overview. Furthermore, the use of abbreviations in illustrations, especially tables, should be avoided if possible. If not, the abbreviations should be defined explicitly in the footnotes or legends of the illustration [ 88 ]. Similarly, numerical values in tables and graphs should also be correctly approximated [ 84 ]. It is recommended that the number of tables and figures in the manuscript should not exceed the target journal's specification. According to Saver [ 89 ], they ideally should not account for more than one-third of the manuscript. Finally, the author(s) must seek permission and give credits for using an already published illustration when necessary. However, none of these are needed if the graphic is originally created by the author, but if it is a reproduced or an adapted illustration, the author must obtain permission from the copyright owner and include the necessary credit. One of the very important tools for designing illustrations is Creative Commons, a platform that provides a wide range of creative works which are available to the public for use and modification.

5.9. Conclusion/Future Perspectives

It has been observed that many reviews end abruptly with a short conclusion; however, a lot more can be included in this section in addition to what has been said in the major sections of the paper. Basically, the conclusion section of a review article should provide a summary of key findings from the main body of the manuscript. In this section, the author needs to revisit the critical points of the paper as well as highlight the accuracy, validity, and relevance of the inferences drawn in the article review. A good conclusion should highlight the relationship between the major points and the author's hypothesis as well as the relationship between the hypothesis and the broader discussion to demonstrate the significance of the review article in a larger context. In addition to giving a concise summary of the important findings that describe current knowledge, the conclusion must also offer a rationale for conducting future research [ 12 ]. Knowledge gaps should be identified, and themes should be logically developed in order to construct conceptual frameworks as well as present a way forward for future research in the field of study [ 11 ].

Furthermore, the author may have to justify the propositions made earlier in the manuscript, demonstrate how the paper extends past research works, and also suggest ways that the expounded theories can be empirically examined [ 3 ]. Unlike experimental studies which can only draw either a positive conclusion or ambiguous failure to reject the null hypothesis, four possible conclusions can be drawn from review articles [ 1 ]. First, the theory/hypothesis propounded may be correct after being proven from current evidence; second, the hypothesis may not be explicitly proven but is most probably the best guess. The third conclusion is that the currently available evidence does not permit a confident conclusion or a best guess, while the last conclusion is that the theory or hypothesis is false [ 1 ]. It is important not to present new information in the conclusion section which has link whatsoever with the rest of the manuscript. According to Harris et al. [ 90 ], the conclusions should, in essence, answer the question: if a reader were to remember one thing about the review, what would it be?

5.10. References

As it has been noted in different parts of this paper, authors must give the required credit to any work or source(s) of information that was included in the review article. This must include the in-text citations in the main body of the paper and the corresponding entries in the reference list. Ideally, this full bibliographical list is the last part of the review article, and it should contain all the books, book chapters, journal articles, reports, and other media, which were utilised in the manuscript. It has been noted that most journals and publishers have their own specific referencing styles which are all derived from the more popular styles such as the American Psychological Association (APA), Chicago, Harvard, Modern Language Association (MLA), and Vancouver styles. However, all these styles may be categorised into either the parenthetical or numerical referencing style. Although a few journals do not have strict referencing rules, it is the responsibility of the author to reference according to the style and instructions of the journal. Omissions and errors must be avoided at all costs, and this can be easily achieved by going over the references many times for due diligence [ 11 ]. According to Cronin et al. [ 12 ], a separate file for references can be created, and any work used in the manuscript can be added to this list immediately after being cited in the text [ 12 ]. In recent times, the emergence of various referencing management software applications such as Endnote, RefWorks, Mendeley, and Zotero has even made referencing easier. The majority of these software applications require little technical expertise, and many of them are free to use, while others may require a subscription. It is imperative, however, that even after using these software packages, the author must manually curate the references during the final draft, in order to avoid any errors, since these programs are not impervious to errors, particularly formatting errors.

6. Concluding Remarks

Writing a review article is a skill that needs to be learned; it is a rigorous but rewarding endeavour as it can provide a useful platform to project the emerging researcher or postgraduate student into the gratifying world of publishing. Thus, the reviewer must develop the ability to think critically, spot patterns in a large volume of information, and must be invested in writing without tiring. The prospective author must also be inspired and dedicated to the successful completion of the article while also ensuring that the review article is not just a mere list or summary of previous research. It is also important that the review process must be focused on the literature and not on the authors; thus, overt criticism of existing research and personal aspersions must be avoided at all costs. All ideas, sentences, words, and illustrations should be constructed in a way to avoid plagiarism; basically, this can be achieved by paraphrasing, summarising, and giving the necessary acknowledgments. Currently, there are many tools to track and detect plagiarism in manuscripts, ensuring that they fall within a reasonable similarity index (which is typically 15% or lower for most journals). Although the more popular of these tools, such as Turnitin and iThenticate, are subscription-based, there are many freely available web-based options as well. An ideal review article is supposed to motivate the research topic and describe its key concepts while delineating the boundaries of research. In this regard, experience-based information on how to methodologically develop acceptable and impactful review articles has been detailed in this paper. Furthermore, for a beginner, this guide has detailed “the why” and “the how” of authoring a good scientific review article. However, the information in this paper may as a whole or in parts be also applicable to other fields of research and to other writing endeavours such as writing literature review in theses, dissertations, and primary research articles. Finally, the intending authors must put all the basic rules of scientific writing and writing in general into cognizance. A comprehensive study of the articles cited within this paper and other related articles focused on scientific writing will further enhance the ability of the motivated beginner to deliver a good review article.

Acknowledgments

This work was supported by the National Research Foundation of South Africa under grant number UID 138097. The authors would like to thank the Durban University of Technology for funding the postdoctoral fellowship of the first author, Dr. Ayodeji Amobonye.

Data Availability

Conflicts of interest.

The authors declare that they have no conflicts of interest.