Peer Review Examples for Research Papers: Reports & Comments
Writing a peer review report can be difficult, especially when you are reviewing a research manuscript for the first time. You may understand the study but struggle to explain its strengths, identify weaknesses, or communicate recommendations professionally.
Looking at well-structured peer review examples can help you understand what journal editors expect and how experienced reviewers organize their feedback.
A good peer review report does more than identify problems. It evaluates the research objectively, acknowledges meaningful contributions, and suggests improvements that authors can reasonably address.
Whether you are reviewing a scientific manuscript, qualitative study, or literature review, your comments should be specific, constructive, and supported by evidence.
This guide provides practical peer review examples for research papers, including complete sample reports, major and minor comments, positive reviewer feedback, and templates you can adapt to different academic disciplines.
What Is a Peer Review Report?
A peer review report is a written assessment of a research manuscript prepared by a qualified researcher or subject-matter expert.
Journal editors use these reports to evaluate the originality, methodological quality, scientific validity, and relevance of manuscripts submitted for publication.
A reviewer typically examines the research question, study design, data analysis, findings, and conclusions before providing recommendations.
According to Wiley's manuscript reviewing guide, a structured reviewer report should communicate the manuscript's contribution, identify major concerns, and explain minor issues requiring correction.
The reviewer provides expert advice, while the journal editor makes the final publication decision.
What Does a Good Peer Review Look Like?
An effective peer review is balanced, evidence-based, and useful to both the authors and journal editor.
It generally includes:
- Manuscript summary: A brief explanation of the research objectives, approach, and main findings.
- Overall assessment: The study's significance, originality, and principal strengths or weaknesses.
- Major comments: Important concerns involving methodology, analysis, scientific validity, or interpretation.
- Minor comments: Issues involving clarity, terminology, figures, tables, citations, or presentation.
- Recommendation: An assessment submitted through the journal's designated editorial system.
The reviewer should explain why each concern matters rather than simply stating that something is incorrect.
For example, instead of writing "The methodology is weak," explain which methodological decision is problematic and how it affects the findings.
The following examples are fictional educational illustrations, not excerpts from confidential manuscript reviews.
Peer Review Example 1: Research Paper Requiring Major Revisions
This example demonstrates a structured review of a fictional quantitative research manuscript.
Manuscript title: The Impact of Social Media Use on Academic Performance Among University Students
Research design: Cross-sectional survey
Overall Assessment
The manuscript addresses an important topic concerning the relationship between social media use and university students' academic performance.
The research question is relevant to contemporary higher education, and the introduction provides a useful overview of previous studies.
However, several methodological issues limit the interpretation of the findings. In particular, the manuscript requires greater clarification of its sampling procedure, measurement methods, and statistical analysis.
These concerns should be addressed before the study's conclusions can be adequately evaluated.
Major Comments
1. Sampling Method and Representativeness
The methodology section does not clearly explain how participants were recruited.
Please specify whether the study employed convenience sampling, random sampling, or another recruitment strategy.
Additionally, explain how the sampling approach affects the generalizability of the findings to the broader university student population.
2. Measurement of Academic Performance
The manuscript does not sufficiently describe how academic performance was measured.
Please clarify whether the study used official academic records, self-reported grades, or another indicator.
If self-reported information was collected, the authors should discuss the potential influence of reporting bias.
3. Statistical Analysis
The manuscript reports an association between social media use and academic performance but provides limited information about potentially confounding variables.
Please explain whether factors such as study time, prior academic achievement, and socioeconomic characteristics were considered.
The analysis and limitations should reflect the consequences of any uncontrolled confounding.
4. Interpretation of Results
The discussion suggests that social media use directly causes lower academic performance.
Because the research uses a cross-sectional observational design, a causal interpretation is not sufficiently supported.
The authors should revise the conclusions to distinguish association from causation.
Minor Comments
- Define all abbreviations when they first appear in the manuscript.
- Improve the readability of Figure 2 by increasing the clarity of axis labels.
- Ensure consistent terminology when referring to academic performance.
- Clarify the description of participant characteristics in Table 1.
Reviewer Recommendation
Major revision, subject to the journal's editorial criteria.
The topic has potential value, but the authors should address the methodological and interpretive concerns before the manuscript can be reconsidered.
Peer Review Example 2: Research Paper Requiring Minor Revisions
Not every manuscript contains serious methodological weaknesses.
Some studies have a sound research design and reliable findings but require improvements in clarity, presentation, or reporting.
Manuscript title: Renewable Energy Integration and Electricity Consumption Patterns
Research design: Quantitative analysis of electricity consumption data
Overall Assessment
This manuscript presents a relevant analysis of electricity consumption patterns in relation to renewable energy integration.
The research objectives are clearly described, and the selected analytical methods appear appropriate for the questions examined.
The results are logically organized and generally support the conclusions.
The paper would benefit from several minor clarifications before publication.
Minor Comments
1. Clarification of Data Sources
Please provide additional details about the origin and period of the electricity consumption dataset.
This information will improve transparency and allow readers to understand the scope of the analysis.
2. Figure Presentation
The legends in Figures 3 and 4 are difficult to distinguish.
Please revise the figures to improve readability and ensure that all units are displayed consistently.
3. Discussion of Limitations
The limitations section could briefly address how regional differences in energy infrastructure might affect the applicability of the findings.
4. Reference Formatting
Please ensure that the reference list follows the journal's required citation format.
Reviewer Recommendation
Minor revision.
The manuscript makes a useful contribution and appears methodologically suitable. The remaining concerns primarily involve clarification and presentation.
Peer Review Example 3: Qualitative Research Article
Qualitative research requires evaluation criteria appropriate to its research approach.
Rather than concentrating exclusively on statistical analysis, reviewers should consider participant selection, data collection, analytical transparency, reflexivity, and whether interpretations are supported by the evidence.
Manuscript title: Experiences of First-Generation College Students in Online Learning Environments
Overall Assessment
The manuscript examines an important educational issue and provides potentially useful insights into the experiences of first-generation university students.
The qualitative approach is appropriate for exploring participants' perspectives.
However, additional methodological information is necessary to understand how the researchers developed their findings.
Major Comments
1. Participant Recruitment
Please describe how participants were identified and recruited.
The manuscript should explain the inclusion criteria and provide sufficient contextual information about the participant group.
2. Qualitative Data Analysis
The analysis section does not adequately explain how interview transcripts were coded or how major themes were developed.
Please describe the analytical approach and the procedures used to support the credibility of the interpretations.
3. Researcher Reflexivity
The manuscript would benefit from discussion of how the researchers' backgrounds or relationships with participants may have influenced data collection and interpretation.
4. Support for Themes
Several reported themes are supported by only limited interview evidence.
Please provide sufficient participant quotations or other relevant evidence to substantiate the interpretations while maintaining participant confidentiality.
Minor Comments
- Use consistent names for themes throughout the results section.
- Explain abbreviations associated with the interview protocol.
- Clarify the relationship between the research questions and the discussion headings.
Reviewer Recommendation
Major revision, because the manuscript requires additional methodological transparency and stronger support for its interpretations.
Peer Review Example 4: Literature Review Article
Reviewing a literature review differs from assessing original experimental research.
Reviewers should evaluate the breadth, accuracy, balance, organization, and critical synthesis of existing scholarship.
Manuscript title: Applications of Artificial Intelligence in Healthcare: A Literature Review
Overall Assessment
The article addresses a timely and important research topic.
The manuscript introduces several relevant applications of artificial intelligence in healthcare and provides a useful overview of the field.
However, the review is largely descriptive and does not sufficiently compare the strengths, limitations, and findings of existing studies.
Major Comments
1. Literature Selection
Please clarify how the publications included in the review were identified.
If the authors intend to present a systematic review, the manuscript should describe a reproducible search strategy and explicit eligibility criteria.
If it is a narrative review, its scope and selection approach should still be explained transparently.
2. Critical Synthesis
The current discussion summarizes individual studies without adequately comparing their findings.
Consider organizing the literature into themes and explaining areas of agreement, disagreement, and uncertainty.
3. Research Gaps
The manuscript would benefit from a clearer discussion of unresolved challenges, including external validation, dataset limitations, and clinical implementation.
Minor Comments
- Define technical abbreviations at first mention.
- Improve transitions between major sections.
- Check consistency in the terminology used for machine learning and artificial intelligence.
Reviewer Recommendation
Major revision, with particular attention to critical synthesis and the transparency of the literature selection process.
Examples of Positive Peer Review Comments
Positive feedback helps authors understand what works well in their manuscript.
Strong reviewer comments should identify specific strengths rather than offering general praise.
Here are examples you can adapt when they accurately describe the research:
Research originality
"The manuscript addresses a relevant research gap and offers an original perspective on a problem of considerable importance to the field."
Methodological quality
"The selected study design is appropriate for the stated objectives, and the methodology is described with sufficient detail to support evaluation of the results."
Data presentation
"The results are clearly organized, and the tables effectively communicate the principal findings."
Discussion quality
"The discussion appropriately connects the findings with previous research and acknowledges important limitations."
Scientific contribution
"The study provides useful evidence that may inform future investigations and methodological developments."
Use positive comments only when they are supported by the manuscript. Excessive praise can weaken the clarity of a report containing substantial concerns.
Peer Review Comments Examples: Major vs. Minor Issues
Distinguishing major and minor comments helps authors prioritize revisions.
| Concern | Example reviewer comment |
|---|---|
| Research design | "Please justify the selected study design and explain how it addresses the research question." |
| Sample size | "The manuscript should clarify how the sample size was determined and discuss any resulting limitations." |
| Statistical analysis | "Please explain why this statistical test was selected and whether its assumptions were evaluated." |
| Unsupported conclusion | "The conclusions appear broader than the evidence supports. Please revise the interpretation accordingly." |
| Literature gap | "The discussion would benefit from considering relevant studies that report contrasting findings." |
| Figure clarity | "Please increase the readability of the labels in Figure 3." |
| Terminology | "Define the abbreviation at its first occurrence and use it consistently." |
| Formatting | "Please check the manuscript against the journal's reference formatting requirements." |
The classification depends on the severity of the problem.
For example, a missing methodological detail may be a minor clarification in one study but a major concern if it prevents the reviewer from evaluating the validity of the findings.
Peer Review Example for a Rejection Recommendation
A recommendation for rejection requires particularly careful explanation.
Reviewers should identify the fundamental concerns and explain why they cannot reasonably be addressed through ordinary revision.
Example
"The manuscript investigates an important research question. However, the study design does not provide evidence sufficient to support its principal conclusion. The absence of an appropriate comparison group, combined with significant uncertainty in the outcome measurements, substantially limits the validity of the reported findings.
These concerns appear to require new data collection or substantial redesign rather than clarification of the existing analysis. I therefore recommend rejection, subject to the editor's judgment."
A rejection recommendation should focus on research quality, not the authors' competence or personal characteristics.
Peer Review Report Template
The following structure can be adapted for many scientific and academic journal reviews.
Manuscript Title: [Insert title]
Overall Assessment
The manuscript investigates [research topic] using [study design or methodology].
Its primary contribution is [brief description].
The main strengths include [specific strengths]. However, several issues require attention, particularly [principal concerns].
Major Comments
- [Identify the major problem and its location in the manuscript.]
- [Explain why the issue affects the research.]
- [Suggest a reasonable clarification, analysis, or revision.]
Minor Comments
- [Identify a presentation or clarity issue.]
- [Recommend a specific correction.]
- [Reference a section, figure, table, or line number.]
Confidential Comments to the Editor
[Include confidential information only when necessary and permitted by the journal.]
Recommendation
[Select the appropriate option in the journal's submission system.]
The recommendation and confidential comments should remain consistent with the concerns communicated to the authors.
How to Write Constructive Peer Review Comments
Effective reviewer feedback should identify a problem, explain its significance, and suggest an appropriate improvement.
Consider the difference between these examples.
Weak comment: "The results section is confusing."
Constructive comment: "The results section discusses multiple outcomes without clearly linking them to the stated research questions. Please consider organizing the findings according to each objective and identifying the relevant tables."
Weak comment: "The references are inadequate."
Constructive comment: "The literature review does not adequately address recent studies examining similar methods. Please discuss relevant evidence to clarify how the present research differs from previous work."
Constructive feedback is specific enough for authors to act on and for editors to understand the significance of the concern.
Avoid requesting additional experiments unless they are necessary to support the manuscript's central claims.
Common Mistakes in Peer Review Reports
Some reports are less useful because they contain vague criticism, excessive minor corrections, or recommendations unsupported by the reviewer's comments.
Common mistakes include:
- Summarizing the manuscript without providing meaningful evaluation.
- Treating grammar corrections as more important than research validity.
- Requesting unnecessary additional experiments.
- Making personal or dismissive comments about the authors.
- Failing to distinguish major concerns from minor issues.
- Recommending rejection without explaining fundamental weaknesses.
- Including inconsistent feedback in comments to authors and editors.
- Sharing confidential manuscripts without editorial authorization.
The Committee on Publication Ethics (COPE) emphasizes fairness, confidentiality, objectivity, and disclosure of competing interests in its ethical guidelines for reviewers.
Always follow the journal's policies concerning manuscript confidentiality, AI tools, and sharing material with colleagues.
Frequently Asked Questions About Peer Review Examples
What is an example of a good peer review?
A good peer review summarizes a manuscript, recognizes its strengths, identifies important research concerns, and provides clear recommendations for improvement. It evaluates the work objectively and supports criticism with specific evidence.
How do you start a peer review report?
Begin with a concise explanation of the manuscript's research question, methods, and main contribution. Then provide an overall assessment before discussing major and minor concerns.
What are examples of major peer review comments?
Major comments often address unsuitable research methodology, missing essential analyses, inappropriate statistical tests, unsupported conclusions, or insufficient evidence supporting the research findings.
What are examples of minor peer review comments?
Minor comments may concern unclear terminology, figure labels, citation formatting, inconsistent abbreviations, or presentation issues that do not substantially affect research validity.
How do you write positive peer review feedback?
Identify specific strengths, such as an appropriate research design, clearly presented findings, an important research question, or a balanced discussion. Explain why each strength contributes to the paper's quality.
Can I copy a peer review example for my manuscript review?
You can use examples as structural guidance, but every review must reflect an independent assessment of the actual manuscript. Copying generic feedback without checking its relevance is inappropriate.
How long should a peer review report be?
There is no universal word limit. A review should be detailed enough to explain important concerns and help the editor evaluate the manuscript, without including unnecessary repetition.
Conclusion
Studying peer review examples is an effective way to learn how to evaluate research manuscripts and communicate professional feedback.
A well-written report includes a concise manuscript summary, an objective assessment of research quality, clearly organized major and minor comments, and recommendations supported by evidence.
Whether reviewing quantitative research, qualitative studies, or literature reviews, the same principles apply: be specific, fair, constructive, and scientifically rigorous.
Using structured examples and adaptable templates can help first-time reviewers develop confidence while producing reports that are useful to authors and journal editors.