A longer peer review report is not necessarily a better one. Reviewers sometimes add comments they are unsure about, extend discussions of minor issues, or repeat concerns because a short peer review can feel like evidence of insufficient engagement.
But length and quality are different things. Learning how to write a peer review means knowing which concerns deserve attention and how clearly they need to be explained. A focused two-page report that identifies the manuscript’s contributions, explains its main problems, and helps the editor make a decision can be more useful than eight pages of accumulated commentary. The goal is to make every comment count.
When is a short peer review appropriate?
A short peer review is appropriate when the manuscript can be assessed clearly without extensive commentary. Three situations commonly justify a more focused report.
1. When the manuscript is genuinely strong
If the methods are appropriate, the results are clearly presented, and the conclusions are supported by the data, a brief assessment may be sufficient. A useful manuscript review should acknowledge these strengths specifically, identify any minor issues, and explain why the findings are credible. Adding unnecessary criticism simply to make the report appear thorough does not improve the assessment.
2. When the manuscript does not fit the journal
If the manuscript clearly falls outside the journal’s scope, a lengthy methodological review may not be necessary, provided the reviewer has been asked to assess journal fit. A short peer review explaining the mismatch can help the editor reach a decision and give authors useful direction without suggesting that extensive revisions would resolve the journal-fit problem.
3. When one major flaw determines the assessment
Sometimes, a manuscript has one critical methodological problem that must be resolved before other concerns can be meaningfully assessed. For example, if the study design cannot support its main conclusion, explaining that limitation clearly may be more useful than listing numerous minor corrections. A focused peer review report can identify the central issue and explain what would need to change. Secondary concerns can be addressed later if a revision is invited.
What makes a short peer review useful?
A useful short peer review is specific, evidence-based, and actionable. Brevity should reduce unnecessary commentary without removing the reasoning authors and editors need. For example, a reviewer might write:
“The analysis needs strengthening.”
Although brief, this comment does not explain what is wrong or what the authors should address. A more useful version would be:
“The regression model in Section 3 does not account for observations clustered within schools. This may underestimate the standard errors and overstate the statistical significance of the main finding. Please account for this clustering or explain why the current approach is appropriate.”
The revised comment identifies the problem, explains its potential impact, and gives the authors a clear direction. Good peer review comments should answer three questions: What is the concern? Why does it matter? What would addressing it require? Whether the explanation takes two sentences or two paragraphs, those details make the feedback useful. For further guidance, the Committee on Publication Ethics’ ethical guidelines for peer reviewers emphasize constructive, objective, and specific feedback.
How can you write shorter peer review comments without losing important details?
To write shorter peer review comments, focus on concerns that affect the editorial decision or require meaningful revision. Remove observations that do not help either purpose.
Start with your overall assessment
Before drafting the report, determine your assessment of the manuscript and the reasons supporting it. Whether you lean toward acceptance, minor revisions, major revisions, or rejection, knowing your position helps you organize the report around the most relevant evidence. Your recommendation should follow from the assessment, rather than determine it in advance.
Decide which comments are necessary
Before adding a comment, ask whether it would influence the editor’s decision or help the author improve the manuscript. Reviewers often notice interesting possibilities, such as additional analyses, broader historical context, or questions beyond the study’s scope. These observations may be valuable, but they do not always belong in the peer review report. Prioritizing essential concerns makes manuscript review more focused and manageable.
How should you structure a short peer review report?
A clear peer review report should present the most important concerns first, separate major issues from minor corrections, and explain the overall assessment. A simple structure works well:
- Overall assessment: Briefly summarize the manuscript’s contribution and your main concerns.
- Major concerns: Explain issues affecting the methods, results, interpretation, or validity of the conclusions.
- Minor concerns: Identify smaller corrections that would improve clarity or presentation.
- Final assessment: Summarize the basis for your recommendation, following the journal’s instructions on whether recommendations belong in confidential comments to the editor.
Bullet points are useful when individual concerns need only one or two sentences. Paragraphs work better when issues are connected or require more detailed reasoning. The aim is to help editors identify the main concerns quickly while giving authors enough information to respond.
Key takeaways
A short peer review can be just as useful as a longer report when it provides a clear, well-supported assessment. When learning how to write a peer review, focus on identifying the concerns that matter, explaining their significance, and giving authors actionable feedback.
Good peer review comments do not need to cover every possible improvement. They need to help authors understand what requires attention and help editors make informed decisions. Brevity is appropriate when the assessment is complete, not simply when the report is short.
Try it live
Want to make your peer review process more focused and efficient? ReviewerOne’s AI-assisted peer review platform supports reviewers with structured guidance and tools to help assess manuscripts and prepare clearer, more useful reports.
Sign up for ReviewerOne and explore a more supported approach to peer review.
