How Peer Review Works: A Complete Guide for Authors

This guide is for authors who need to decide what to do at a specific stage, not for editors designing a review program or researchers comparing peer-review policy. It combines publisher and ethics guidance with an owner-by-owner decision map. It cannot reveal a journal's private reviewer invitations or predict an editorial outcome.

Three failure modes are especially expensive:

• Treating a portal label as a verdict. A label can cover recruitment, active review, or editorial synthesis, so preserve the dated event instead of assigning sentiment.

• Preparing a generic rebuttal. Map each likely objection to the claim, figure or table, methods, controls, statistical analysis, data, and limitation it tests.

• Escalating without an owner. Hold an inquiry while an author task is open; hold repeated follow-ups when the journal's stated window has not passed; and stop guessing when the only evidence is another author's timeline.

The stage matrix below turns those boundaries into a concrete action.

When you submit, your paper goes into the journal's manuscript management system - Editorial Manager, ScholarOne, or the journal's proprietary platform. An editorial assistant does a basic compliance check: are all required files uploaded, is the author list complete, are competing interests declared, is the cover letter present?

The duration varies by journal, file completeness, and staff workflow. Treat any automated email or author task as the reliable event rather than assuming a universal one-to-three-day check.

This is where most manuscripts die, and authors rarely understand how fast it happens.

The handling editor - usually a professional editor at large publishers, or an active researcher serving as associate editor at smaller journals - reads the abstract, introduction, and key figures. They're making two assessments:

1. Does this paper fit the journal's scope? A methods paper at a clinical journal, or a mechanistic cell biology study at a translational medicine journal, will be desk-rejected here regardless of quality.

1. Is the finding significant enough for this journal's standard? At Nature and Cell, this bar is extremely high - only research that changes how the field thinks belongs there. At Nature Communications, you need broad cross-disciplinary appeal. At PLOS ONE, the bar drops to technical soundness only.

The proportion ending at editorial assessment varies by journal, article type, and period, and many publishers do not provide a comparable denominator. The useful distinction is why a paper stops: scope, article type, completeness, evidence, ethics, or editorial priority.

If the paper is declined before external review, the timing is journal- and manuscript-specific. Use the current journal metric if one is published.

If the editor decides to send the paper for peer review, they need to find reviewers. This is one of the most underappreciated parts of the process - and one of the biggest sources of delays.

Editors may need several invitations before enough qualified reviewers agree. The author-facing status does not reveal invitation count or decline reasons.

Journal editors may use databases, citations, author suggestions, and editorial networks to identify reviewers. If the journal requests suggestions, follow its live count and conflict rules; do not assume suggestions will accelerate the process.

Reviewer deadlines, extensions, and compensation policies vary by journal. What matters to the author is that the public label does not expose every invitation, deadline, or returned report.

What reviewers are actually assessing:

Novelty and significance: Is this finding new? Does it advance the field in a meaningful way? At high-impact journals, reviewers ask whether this changes how they think about the problem.

Methods and rigor: Are the experiments appropriate for the claims? Is the statistical analysis correct? Are controls adequate? Are sample sizes justified?

Data quality: Do the figures clearly support the conclusions? Are there raw data issues? Is the interpretation overreaching?

Literature placement: Does the manuscript accurately represent the existing literature? Are key competing papers cited?

Writing clarity: Can a well-informed reader in the field understand what was done, why, and what it means?

Reviewers don't check whether the work has been done before (plagiarism) - that's a separate editorial function. They're evaluating scientific merit.

Once reviews come in, the editor reads them and makes a decision. At journals with associate editors and senior editors, there may be an internal discussion. The editor's job is to synthesize the reviews - two enthusiastic positive reviews don't automatically mean acceptance if there are fundamental concerns.

Accept: The manuscript is accepted as-is or with limited changes. The frequency varies by journal and article type; this page does not assign an unsupported percentage.

Minor revision: Specific changes are required, such as clarified text, focused controls, or updated references. Use the deadline and re-review plan in the actual decision letter.

Major revision: Significant changes may be needed, including experiments, restructured arguments, or new analyses. The deadline and whether the paper returns to the same reviewers are journal- and case-specific.

Reject with encouragement to resubmit: More serious than major revision. The paper needs fundamental changes - study design, primary analysis approach, core interpretation - that effectively require starting over. The editor indicates they'd consider a substantially revised version.

Reject: The paper isn't suitable for this journal. Either the science is flawed or the work doesn't meet the novelty or scope requirements.

If you get a major revision request, the response you write is as important as the experiments you do. Reviewers re-read both your revised manuscript and your point-by-point response letter.

What makes a strong response letter:

• Address every point explicitly - no reviewer comment should go without a response

• Be specific about what you changed and where - "we added this experiment, see Figure 3B"

• Don't argue with reviewers on factual matters where they're right, even if you don't like it

• When you genuinely disagree, explain your reasoning with evidence rather than dismissing the concern

• Thank reviewers for their time - they're doing this for free

Revised manuscripts may return to prior reviewers, new reviewers, or only the editor. The decision letter and later correspondence establish the path.

Additional revision rounds can occur when material concerns remain. The total duration depends on the work requested and the journal's process; avoid turning an anecdotal extreme into a planning norm.

Use the current metric published by the exact journal and distinguish first editorial decision, first decision after external review, submission to acceptance, and acceptance to publication. Those measures answer different questions and cannot be pooled into one generic schedule.

The biggest misunderstanding is that peer review starts with reviewers. It usually does not. The first meaningful gate is editorial triage, where the journal decides whether the paper is worth reviewer time at all. That is why manuscripts often fail before any outside expert ever sees them.

According to PLOS ONE's editorial and peer review process page, editors first review the manuscript against publication criteria and decide whether additional expert review is needed. BMJ's peer-review terms also make clear that some journals use open peer review while still routing all decisions through the editorial office. Those official process documents match what we see in practice: reviewers inform the decision, but the editor controls the workflow and the final outcome.

How long does peer review take?

It varies by journal, article type, reviewer availability, and revision history. Use the journal's current stated timeline and the live submission status rather than a universal average.

Are peer reviewers paid?

No, in almost all cases. Peer reviewers volunteer their time as part of the professional expectation that researchers contribute to the field. Some journals offer token recognition (reviewer discounts on APCs, recognition in annual acknowledgments), but payment is rare and generally small when it exists.

Can you suggest your own reviewers?

Some journals request reviewer suggestions and others do not. Follow the live instructions, use the number of fields provided, and disclose conflicts. Do not suggest recent collaborators, close colleagues, or anyone whose independence is doubtful.

What's the difference between major revision and minor revision?

The labels are journal-specific. Read the decision letter for the required evidence, deadline, and whether the editor has made any commitment. A minor revision may still require substantive clarification; a major revision may require experiments, analyses, or restructuring. Neither label guarantees acceptance.

What happens if reviewers disagree?

Editors make the final call. If one reviewer is enthusiastic and one is critical, the editor weighs the substance of the concerns, not just the verdict. A highly specific critical review often carries more weight than a vague positive one. The editor may also solicit a third reviewer's opinion to break a tie.

Before submitting, a manuscript readiness and journal-fit check can catch the fit, framing, and methodology gaps that editors screen for on first read.

The same portal label may span several rows, so correspondence and dated transitions matter more than the label alone.

For any review status, write down four things: what the journal controls, what the author controls, what remains unknown, and the next proportionate action. During triage, the journal controls scope and priority while the author controls package completeness. During external review, the journal and reviewers control timing while the author can prepare evidence, data, and a response structure. During revision, the author again owns most of the visible progress.

This map prevents two unhelpful extremes: passive waiting when an author task is open, and repeated inquiries when the delay is outside the author's control. It also keeps private judgments in the unknown category. Portal labels rarely reveal reviewer sentiment or the likely decision. Act on dated requests, prepare for foreseeable evidence questions, and escalate once only when a stage is materially atypical.

The peer-review process is easier to understand as a sequence of decisions than as a list of status labels. At each handoff, a different actor asks a different question and leaves a different evidence trail.

This map explains why the same amount of elapsed time can mean different things. It also gives the author an actionable artifact: preserve the current files, message, actor, and unresolved dependency at every transition.

The review model changes what you should write, not just who reads it. The Academy covers single-blind, double-blind, and open review from the author side.

Use this guide if you are an author interpreting a live journal workflow or preparing a manuscript for review. It explains decision ownership and evidence dependencies across common models; it does not predict a specific editor, reviewer, journal, or deadline. Publisher-specific rules and status labels still belong to the target journal's official instructions.

Use this page when you need to understand how a manuscript moves from editor screening to reviewer reports and final decision. It is not a substitute for a journal-specific author-instruction page, and it should not be used to estimate the timeline for one manuscript. The useful job here is process interpretation: what each stage is trying to decide, which manuscript components affect that stage, and what to fix before a reviewer has to infer the argument.

Evidence basis: We rechecked the ICMJE recommendations and COPE ethical guidelines for peer reviewers on September 5, 2026. Those sources define broad responsibilities; individual journals control their own workflow and labels. The map below is Manusights guidance.

This map closes the gap between a generic process diagram and the author's next defensible action. Journal-specific timing belongs on the relevant journal guide, not on this universal process owner.