What You Should Not Do While Writing a Peer Review

What You Should Not Do While Writing a Peer Review

Mar 26, 2025Rene Tetzner

Summary

Great reviews advance science; bad habits derail it. This guide focuses on what not to do when writing a peer review—and offers precise “do instead” fixes. Don’t drag your feet accepting or declining; don’t miss deadlines without warning; don’t submit thin, rushed, or hostile reports; don’t reveal identities or share manuscripts; don’t overstep by rewriting the paper; don’t coerce citations; don’t let bias, rivalry, or ideology shape your verdict; and don’t end with vague recommendations.

Do this instead: respond promptly; plan your reading and notes; provide evidence-based, section-by-section comments; keep a professional tone; disclose conflicts; protect confidentiality (no uploads to external tools without permission); separate “fatal” from “fixable”; give actionable suggestions; and state a clear, decisive recommendation. Use our checklists, model language, and 60-minute review workflow to deliver rigorous, fair, and on-time reports editors will trust.

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What You Should Not Do While Writing a Peer Review (and What to Do Instead)

Editors remember reliable reviewers. Authors remember fair ones. Your goal is to be both. Below is a practical, comprehensive guide that separates common don’ts from specific, actionable do’s so you can avoid the pitfalls that waste editorial time, frustrate authors, and erode trust—while delivering rigorous, constructive reviews on schedule.


0) First Principles

  • Confidentiality: A manuscript under review is not public; do not share it or use it for your own work.
  • Integrity: Evaluate methods and claims, not people. Evidence beats opinion.
  • Service: Your job is to help the editor reach a decision and help the authors improve the work—regardless of outcome.

1) Don’t delay your response to an invitation

Editors are managing tight timelines. A slow “maybe” stalls the process.

Do instead: reply within 48 hours. If conflicted or unavailable, decline and (optionally) suggest two qualified alternates with brief rationales.
Model reply: “Thank you for the invitation (MS#2025-0147). I can submit a review by 8 Dec. My expertise aligns with methods and analysis; I’m less strong on the clinical context.”

2) Don’t accept and then miss the deadline in silence

Editors can accommodate delays—but only if you tell them early.

Do instead: calendar the due date the moment you accept; if you slip, notify the editor immediately with a revised date (≤7–10 days).

3) Don’t rush a superficial report

One vague paragraph (“not suitable”) helps no one and risks misjudgment.

Do instead: provide a brief summary (to show understanding), then major and minor points with evidence, examples, and page/line anchors.
Skeleton you can reuse:
  • Summary (3–5 sentences)
  • Major points (numbered): validity, novelty, methods transparency, statistics, ethics, limitations.
  • Minor points: clarity, figures, references, style.
  • Recommendation: Reject / Major revision / Minor revision / Accept.

4) Don’t include personal remarks or identifying details

Even in open review, personal commentary (“the author clearly doesn’t understand…”) is unprofessional.

Do instead: keep all comments impersonal and evidence-based: “The inference in §3.2 relies on an untested assumption; consider sensitivity analysis.”

5) Don’t overstep your role by trying to co-author the paper

Excessive rewriting requests hijack authorship and can introduce your biases.

Do instead: suggest concrete improvements while respecting the authors’ approach. Phrase as options, not mandates: “If the authors choose to retain Model A, please justify its assumptions; alternatively, Model B may address heteroscedasticity.”

6) Don’t coerce citations to your own work

Recommending irrelevant citations inflates metrics and breaches ethics.

Do instead: cite missing scholarship only if it changes interpretation or is essential background. Declare if suggested works are yours and explain relevance.

7) Don’t lose objectivity because conclusions conflict with yours

Peer review isn’t a referendum on your worldview.

Do instead: separate “I disagree” from “This is unsound.” Ask: Are the methods appropriate? Are analyses reproducible? Are claims supported? If yes, recommend acceptance even if the result contradicts your prior work.

8) Don’t be harsh, dismissive, or sarcastic

Hostility is unnecessary and counterproductive.

Do instead: adopt a firm but respectful tone. Pair critiques with constructive paths forward. Acknowledge at least one strength to show fairness.
Swap this: “The paper is awful and unreadable.” → for this: “The central question is important; however, the current draft has major clarity issues (see points 2–5).”

9) Don’t end with a vague recommendation

Editors need a decision, not ambiguity.

Do instead: choose one category and justify it in 2–3 lines. If “major revision,” state the minimum conditions for eventual acceptance.
Model closer:Recommendation: Major revision. Conditional on (i) preregistration or equivalent transparency, (ii) corrected multiple-comparison control, and (iii) revised discussion limiting claims to the sampled settings.”

10) Don’t ignore conflicts of interest

Undisclosed conflicts (financial, collaborative, competitive) undermine trust.

Do instead: disclose immediately. If the conflict is material (recent co-authorship, direct competition for the same dataset/grant), decline the review.

11) Don’t breach confidentiality

Sharing manuscripts with trainees without permission, uploading to third-party services, or discussing on social media is prohibited.

Do instead: seek editor approval before involving a trainee (co-reviewer name must be recorded); never upload text or figures to external tools that store content; delete local copies after the decision.

12) Don’t use generative tools to process confidential text without permission

Many online tools store inputs, creating privacy and IP risks.

Do instead: summarise in your own notes; if a tool is allowed by the journal, mask identifiers and use offline/local models where possible; you remain responsible for accuracy.

13) Don’t nitpick style while ignoring validity

Copyedits can wait; fatal flaws cannot.

Do instead: prioritise hierarchy: validity → reproducibility → novelty → clarity → style. Flag grammar only when it blocks comprehension.

14) Don’t punish authors for missing experiments you simply find interesting

“Please run an entirely new study” is rarely appropriate at revision.

Do instead: differentiate between essential experiments (needed to support the main claim) and nice-to-have future work. Phrase the latter as suggestions for subsequent research.

15) Don’t rely on memory—anchor comments to the manuscript

“Somewhere the authors say…” wastes time.

Do instead: include page/line/figure numbers or section headers, e.g., “Methods §2.1, lines 118–134.”

16) Don’t let frustration with format bleed into the review

Even if the PDF is poorly formatted, focus first on content.

Do instead: request a clean, double-spaced version if readability blocks review; otherwise proceed and put layout comments last.

17) Don’t forget ethics and reporting standards

Missing approvals, consent, registrations, or data access statements are red flags.

Do instead: check appropriate checklists (CONSORT, PRISMA, ARRIVE, STROBE). If absent, request them.

18) Don’t conflate “negative results” with “no value”

Well-designed studies with null findings can be important.

Do instead: evaluate rigor and transparency; recommend acceptance if the question matters and the study is sound, regardless of direction of effect.

19) Don’t forget you are also an author

Today’s reviewer is tomorrow’s submitter. Professional empathy pays dividends.

Do instead: write the kind of review you would hope to receive: candid, courteous, and concrete.

Model Language You Can Paste

Open: “This manuscript examines [topic]. The question is important and timely. My main concerns relate to [validity/analysis/transparency], summarised below.”

Evidence-based critique: “The inference on p. 7 relies on an assumption of parallel trends not tested in Fig. 2. A placebo test using pre-treatment periods would strengthen the claim.”

Tone for disagreement: “I interpret the data differently: the exploratory subgroup result appears sensitive to the chosen threshold (Table S3). Please report robustness across thresholds or temper the claim.”

Clear recommendation:Major revision. If the authors (1) preregister or provide a time-stamped analysis plan, (2) address multiplicity, and (3) limit claims to the sampled setting, the manuscript would meet the journal’s standard.”


A 60-Minute Review Workflow (When Time Is Tight)

  1. 10 min — Skim & scope: title, abstract, figures, conclusions. Note the claim in one sentence.
  2. 20 min — Methods & analysis deep dive: identify any validity or transparency gaps; mark pages/lines.
  3. 15 min — Results & discussion: check that claims match evidence; flag overstatement.
  4. 10 min — Draft structure: summary (5 lines), 3–6 major points (numbered), 3–8 minor points.
  5. 5 min — Recommendation & polish: choose category; add conditions for revision; tone check; proof and submit.

Ethics Corner: Three Absolute Don’ts

  • No scooping: do not use ideas, data, or text from a confidential manuscript in your own work.
  • No unauthorized sharing: do not circulate the manuscript to colleagues or trainees unless the editor approves and their names are recorded.
  • No data exfiltration: do not upload the manuscript (even snippets) to external “analysis” services that retain content. Keep notes offline.

Checklist: Before You Hit “Submit”

  • [ ] I responded promptly to the invitation and disclosed conflicts.
  • [ ] My review contains a fair summary, numbered major/minor points, and page/line anchors.
  • [ ] Tone is professional; no personal remarks; at least one strength acknowledged.
  • [ ] I did not suggest irrelevant self-citations; any recommended citations are essential and explained.
  • [ ] I protected confidentiality (no sharing, no uploads).
  • [ ] I provided a clear, decisive recommendation with conditions if “revise.”
  • [ ] Files and notes with manuscript content will be deleted after decision.

Conclusion

Peer review works when reviewers are timely, rigorous, and fair. The fastest way to become an editor’s go-to reviewer is to avoid the classic missteps: don’t stall, don’t miss deadlines in silence, don’t send thin or hostile reports, don’t breach confidentiality, don’t rewrite the paper for the authors, don’t coerce citations, and don’t waffle at the end. Do communicate early, reason from evidence, keep a civil tone, and make a clear recommendation. That combination improves manuscripts, speeds decisions, and strengthens the credibility of our literature.

Need a journal-ready review template for your lab group? We can tailor the skeleton above to your field and target journal (double-blind, registered reports, clinical trials, or qualitative research).



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