CASRAI Dictionary

Tag: icmje authorship order

  • ICMJE Authorship Order: The Guarantor Role CRediT Never Named

    ICMJE authorship order is not dictated by the ICMJE Recommendations — author groups decide it collectively. But ICMJE’s four authorship criteria also require every listed author to be accountable for the paper’s integrity, a duty many journals formalise as a single named “guarantor.” CRediT’s 14 contributor roles describe what each person did, not who answers for the work, so no CRediT role names this accountability function.

    A guarantor is the author (or authors) a journal designates as taking full responsibility for the integrity of the whole paper, from data access to the decision to publish. This creates a practical gap for any journal, institution, or author-services team trying to satisfy ICMJE’s accountability principle and CASRAI-originated CRediT contributor role taxonomy requirements in the same submission workflow.

    What is the ICMJE “guarantor” role?

    The word “guarantor” does not appear in the current ICMJE Recommendations text. It is a journal-level formalisation of ICMJE’s fourth authorship criterion — agreement to be accountable for all aspects of the work — adopted independently by individual journals and editorial bodies.

    The BMJ’s author guidance states plainly: “One contributor must be listed as the guarantor of the paper. The guarantor accepts full responsibility for the work and/or the conduct of the study, had access to the data, and controlled the decision to publish.” The World Association of Medical Editors (WAME) uses near-identical language, and the Council of Science Editors (CSE) recommends “at least 1 coauthor assuming the role of content guarantor.” The UK Research Integrity Office (UKRIO) frames it the same way: contributors are responsible for their own contribution, “but at least one person — the guarantor — needs to accept accountability for the whole work.”

    In practice, the guarantor is usually the principal investigator or senior author — the person best placed to vouch for the study from inception to publication, including responding to post-publication integrity queries.

    How does ICMJE authorship order actually work?

    ICMJE explicitly leaves authorship order to the author group. “The criteria used to determine the order in which authors are listed on the byline may vary, and are to be decided collectively by the author group and not by editors,” per the ICMJE Recommendations. Editors are told not to arbitrate order disputes; unresolved disagreements go to the authors’ institution, not the journal.

    Before order, ICMJE sets four cumulative gatekeeping criteria for who counts as an author at all:

    1. Substantial contribution to conception/design, or acquisition, analysis, or interpretation of data;
    2. Drafting the work or revising it critically for important intellectual content;
    3. Final approval of the version to be published;
    4. Agreement to be accountable for all aspects of the work, ensuring questions about accuracy or integrity are investigated and resolved.

    All four must be met — meeting only one or two justifies acknowledgment, not authorship. This is ICMJE’s primary defence against honorary (gift) authorship, where seniority or funding alone earns a byline place without a qualifying contribution.

    Guarantor vs corresponding author vs CRediT roles

    These three labels are routinely conflated in submission systems, yet each answers a different question. Confusing them is a common source of author disputes and incomplete disclosure statements.

    Role Answers the question Defined by Typically held by
    Guarantor Who is accountable for the paper’s integrity as a whole? Individual journals (e.g. The BMJ, WAME, CSE) — not ICMJE’s text directly Principal investigator or senior author
    Corresponding author Who handles communication with the journal? ICMJE Recommendations Whoever manages submission, peer review and post-publication queries
    CRediT contributor role What did each person actually do? ANSI/NISO Z39.104-2022 Any contributor, author or non-author

    The same person often holds all three roles, but nothing requires it. A guarantor need not be the corresponding author; a corresponding author need not have contributed to every CRediT role assigned on the paper.

    Why CRediT’s 14 roles never named accountability

    CASRAI originated the CRediT contributor role taxonomy in 2014. The standard is now stewarded by NISO as ANSI/NISO Z39.104-2022. Its 14 roles — Conceptualization, Data Curation, Formal Analysis, Funding Acquisition, Investigation, Methodology, Project Administration, Resources, Software, Supervision, Validation, Visualization, Writing – Original Draft, and Writing – Review & Editing — were built to answer a single question: what contribution did this person make?

    CRediT was never designed to determine authorship or assign accountability; it deliberately covers non-author contributors too. That is precisely why it has no “guarantor” equivalent: guarantorship is not a type of contribution, it is a standing obligation to vouch for the finished, published record. Mapping the two frameworks side by side exposes a structural gap rather than an oversight — CRediT catalogues labour, ICMJE’s guarantor concept assigns liability.

    This distinction matters for research integrity investigations. When COPE authorship guidelines are invoked in a misconduct case, investigators ask who is accountable, not just who contributed which section — a question CRediT statements alone cannot answer.

    Answer-first Q&A

    What are the rules for authorship in the ICMJE?

    ICMJE requires all four authorship criteria to be met cumulatively: a substantial contribution to the work, drafting or critical revision, final approval of the published version, and agreement to be accountable for its accuracy and integrity. Meeting only some criteria warrants acknowledgment, not a byline.

    What is the order of authorship in a publication?

    ICMJE does not prescribe an order. It is a joint decision of the co-authors, commonly reflecting descending contribution, though alphabetical and role-based conventions (first/last-author-senior) exist. Authors should be able to explain the chosen order if questioned.

    What is a guarantor in a journal?

    A guarantor is the author who “takes full responsibility for the integrity of the work as a whole, from inception to published article,” accepting accountability even for sections they did not personally execute. Many biomedical journals require exactly one guarantor to be named at submission.

    Is the corresponding author the same as the guarantor?

    Not necessarily. The corresponding author is ICMJE’s designated point of contact for editorial correspondence; the guarantor is a separate, journal-added accountability role. The same individual frequently fills both, but journals should let authors specify them independently.

    Recommendations for journals requiring both frameworks

    Journals and publishers running ICMJE-aligned author guidelines alongside a CRediT contribution statement should treat the two as complementary layers, not duplicate paperwork:

    • Add a distinct “Guarantor” field to submission systems, separate from both “Corresponding author” and the CRediT role matrix.
    • Require the guarantor to confirm data access and the decision-to-publish sign-off explicitly, not infer it from a CRediT “Supervision” or “Project administration” tag.
    • Publish the CRediT statement and the guarantor designation together in the same author-contributions section, so readers and integrity investigators see contribution and accountability side by side.
    • Where honorary authorship risk is high (large consortia, industry-sponsored trials), cross-check that the named guarantor also satisfies all four ICMJE authorship criteria — a guarantor who is not a qualifying author is itself a red flag under COPE authorship guidelines.

    As more journals adopt structured authorship and contributorship disclosure, the guarantor concept is likely to become more explicit in editorial policy rather than less — it is the accountability layer that a purely descriptive contributor taxonomy was never built to provide. Institutions drafting local authorship policy should document both requirements separately, since neither framework can substitute for the other.

  • ICMJE Authorship Criteria vs CRediT Roles: What the Four-Point Test Still Leaves Out

    The ICMJE authorship criteria are four cumulative conditions — substantial contribution, drafting or critical revision, final approval, and accountability — that a journal-listed author must meet in full. They decide who qualifies for the byline, but they say nothing about what each named author actually did, which is why a growing number of journals now pair the ICMJE test with a granular CRediT contributor-role declaration.

    The ICMJE authorship criteria are the International Committee of Medical Journal Editors’ four-part definition of authorship, first published in the ICMJE Recommendations and now the de facto global standard referenced by COPE, most biomedical journals, and many university research-integrity offices.

    What are the four ICMJE authorship criteria?

    The ICMJE recommends that authorship rest on four criteria, all of which must be met — not a majority. An individual must have made substantial contributions to conception, design, or data work; drafted or critically revised the manuscript; given final approval of the published version; and agreed to be accountable for its accuracy and integrity.

    • Criterion 1 — Substantial contribution: conception or design of the work, or acquisition, analysis, or interpretation of data.
    • Criterion 2 — Drafting or critical revision: writing the manuscript or reviewing it critically for important intellectual content.
    • Criterion 3 — Final approval: sign-off on the exact version submitted for publication.
    • Criterion 4 — Accountability: agreement to answer for the accuracy and integrity of any part of the work, including parts done by co-authors.

    The ICMJE is explicit that these criteria are not a filter for excluding deserving colleagues: anyone who meets criterion 1 must get the opportunity to participate in drafting, review, and approval, so they can also satisfy criteria 2–4. Funding acquisition, general supervision, and technical or language editing — on their own — do not qualify a contributor for authorship; those belong in the acknowledgements, not the byline.

    A newer addition addresses generative AI directly: under the current ICMJE Recommendations, journals must require disclosure of AI-assisted technology use, and chatbots such as ChatGPT cannot be listed as authors, because they cannot be held accountable for accuracy and integrity under criterion 4.

    Why does meeting the criteria still produce authorship disputes?

    The four-point test is qualitative, self-reported, and adjudicated by the author group itself — the ICMJE states explicitly that it is “the collective responsibility of the authors, not the journal” to determine who qualifies, and that editors should not arbitrate authorship conflicts. That design leaves real gaps in practice.

    • The biostatistician who never drafts. A statistician runs the primary analysis (clearly criterion 1) but is not invited to write or revise the manuscript, so criterion 2 is never offered to them — despite the ICMJE’s own instruction that anyone meeting criterion 1 should get that opportunity. This is one of the most common authorship grievances reported to COPE.
    • Guest and honorary authorship. A senior figure who supervised the lab, but did not contribute intellectually to conception, analysis, drafting, or revision, is added to the byline for prestige or funding-renewal reasons. COPE’s authorship guidance identifies two minimum requirements across authorship definitions — a substantial contribution and accountability — and honorary authors typically fail both.
    • Ghost authorship. A medical writer or industry statistician does the drafting and analysis but is left off the byline entirely, often in industry-funded clinical trials, obscuring who is actually accountable for the reported results.
    • Large multi-author consortia. When hundreds of contributors work on a single dataset or trial, the ICMJE recommends the group decide authorship before the work starts — but retrospectively verifying that every named individual met all four criteria, including final approval, becomes practically unenforceable at scale.

    In each case, the pass/fail structure of the ICMJE test cannot show a reader, an editor, or a research-integrity investigator which specific task a disputed author did or didn’t do. That is the exact gap CRediT was built to close.

    How do CRediT contributor roles add the missing granularity?

    CASRAI originated the CRediT contributor role taxonomy in 2014 as a structured vocabulary of contribution types. The standard is now stewarded by NISO as ANSI/NISO Z39.104-2022, and it defines 14 discrete roles — Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Resources, Software, Supervision, Validation, Visualization, Writing – original draft, and Writing – review & editing.

    Where the ICMJE test asks a single binary question — author or not — CRediT asks a descriptive one: which of these 14 tasks did this named contributor actually perform, and can more than one person share a role. Journals across Elsevier, Cell Press, PLOS, and Frontiers now request a CRediT statement alongside (not instead of) an ICMJE-compliant author list, and several also publish CRediT contributions for non-author acknowledged contributors.

    Dimension ICMJE authorship criteria CRediT contributor roles
    Function Threshold test: qualifies for the byline or not Descriptive vocabulary: records specific tasks performed
    Structure 4 cumulative, all-or-nothing criteria 14 non-exclusive, combinable roles
    Who it covers Named authors only Authors and non-author contributors alike
    Steward International Committee of Medical Journal Editors NISO (ANSI/NISO Z39.104-2022), originated by CASRAI
    Resolves guest/ghost authorship? In theory, no — self-adjudicated and unverifiable at the criteria level Makes the mismatch visible: a “Writing” credit with no “Investigation” or “Formal analysis” role is a red flag

    The complementary use matters most in the disputed scenarios above. A CRediT statement that lists a senior author under Supervision only — with no Conceptualization, Investigation, Formal analysis, or Writing role — gives an editor or institutional investigator concrete evidence to test against the ICMJE’s four criteria, something a bare byline never could.

    Answer-first: common authorship questions

    What are the criteria for authorship in the ICMJE?

    The ICMJE requires all four criteria to be met: substantial contribution to conception, design, or data work; drafting or critical revision of the manuscript; final approval of the published version; and accountability for the work’s accuracy and integrity. Meeting only some criteria means acknowledgement, not authorship.

    What are the five criteria for authorship?

    Some sources describe “five criteria” by splitting the ICMJE’s fourth criterion — accountability — into two parts: taking responsibility for the work and confirming its integrity. The ICMJE’s own text remains four official criteria; the five-part version is a restatement, not a competing standard.

    What are the minimum requirements for authorship?

    COPE identifies two minimum requirements common to authorship definitions across disciplines: making a substantial contribution to the work, and being accountable for the work and its published form. These map directly onto ICMJE criteria 1 and 4.

    What are the guidelines for authorship?

    Authorship guidelines set who can be named on a publication and what they must do to earn that status. The dominant biomedical framework is the ICMJE’s four-criteria test, supplemented in practice by CRediT contributor-role statements and journal-specific policies aligned with COPE guidance.

    What this means for journals, institutions, and researchers

    For editors, ICMJE and CRediT serve different stages of one workflow: ICMJE decides the byline, CRediT documents the record. Requiring both at submission gives research-integrity offices a verifiable trail when a dispute later reaches them, since the ICMJE explicitly directs unresolved conflicts to the researchers’ institution, not the journal.

    For research administrators, a documented CRediT statement is often the fastest way to evidence individual contribution for funder and promotion-committee requirements, independent of authorship order.

    For early-career researchers and biostatisticians, raising criterion-2 access early — asking to review and comment on a draft — is the practical way to convert a CRediT-documented “Formal analysis” role into full ICMJE-qualifying authorship before submission, not after a dispute arises.

    Where authorship attribution is heading

    Neither framework is static. The ICMJE continues to revise its recommendations — most recently to address AI-assisted technology disclosure — and CRediT’s stewardship under NISO opens a formal maintenance path for role definitions as research practice evolves. The direction of travel is layering, not replacement: a qualitative gate for who is accountable, and a structured record of who did what.

    Journals, funders, and institutions that adopt both the CRediT taxonomy and ICMJE-aligned authorship policies give readers, editors, and integrity investigators the clearest possible picture of a paper’s provenance — something the four-point test was never designed to provide on its own. For definitions of individual roles, see the CRediT roles reference and the broader research-administration dictionary.