Authorship Criteria, Definitions & Author-Order Roles
This section addresses the threshold question that CRediT does not answer: who qualifies as an author at all. The governing reference is ICMJE's 'Defining the Role of Authors and Contributors,' which sets out four criteria that must all be satisfied for authorship: substantial contribution to the conception, design, data acquisition, or analysis and interpretation of the work; drafting or critically revising it for important intellectual content; final approval of the version to be published; and agreement to be accountable for all aspects of the work. Meeting only one or two of these criteria is not sufficient, which is why ICMJE also requires that anyone meeting the criteria be given the opportunity to co-author, and that everyone credited as an author actually meet them. Beyond the qualifying test, this section covers the practical roles and mechanics that surround a byline once authorship has been established: conventions for author order (such as first-author and senior/last-author positions and their disciplinary meanings), the responsibilities of the corresponding author, and the correct way to list institutional affiliations, including how to handle multiple affiliations, name changes, or authors who have since moved institutions. These conventions vary somewhat by discipline and journal, but the ICMJE criteria provide the common baseline that most publishers and institutions build their own authorship policies on top of.
Guides
IPCC Assessment Report Authorship Roles vs. Journal-Article Authorship: Coordinating Lead Author, Lead Author, Contributing Author, and Review Editor Explained
How the IPCC’s Coordinating Lead Author, Lead Author, Contributing Author, and Review Editor roles work, how authors are nominated and selected, and how this government-mediated system differs from ICMJE/CRediT journal-article authorship.
Genomics Megaconsortium Authorship: How UK Biobank and Large Sequencing Papers Credit Hundreds of Scientists
How UK Biobank-scale whole-genome-sequencing papers assign and list credit across hundreds of scientists: a single group-name byline, tiered leadership/contributor/supplementary name lists, narrative Author Contributions statements, and ICMJE’s group-authorship rule that every credited individual still meet all four authorship criteria.
Veterinary Medicine Authorship Criteria: How AVMA/JAVMA Define Who Qualifies as an Author
AVMA/JAVMA authorship criteria for veterinary research: the four-part test AVMA journals apply, why funding-only sponsors, referring clinicians, and data-collection-only technicians don’t automatically qualify, and how it maps to ICMJE.
Cochrane’s Authorship Rules for Systematic Reviews: Criteria and Byline-Order Changes on Updates
Cochrane requires every review author to meet its four ICMJE-aligned criteria, treats byline order as a collective author decision, and requires a signed Changes in Authorship form whenever the author list changes on an updated review.
When Does Data Curation or Stewardship Work Become Co-Authorship?
A judgment framework, built on ICMJE’s authorship criteria and the CRediT taxonomy, for deciding when curating, cleaning, or maintaining a shared or reused dataset rises to co-authorship versus acknowledgment.
Authorship Credit in Arts-Based and Practice-Based Creative Research
How authorship and contribution credit are attributed for exhibitions, performances, design works, and other practice-based creative research outputs that fall outside the journal-article authorship model.
Law Review and Legal-Scholarship Authorship Norms: Why Single Authorship Still Dominates
Why the single-authored article remains the default in student-edited law reviews even as most fields shift toward multi-author teams, and the genuine exceptions: empirical legal studies, law-and-economics, and interdisciplinary scholarship.
Clinical Practice Guideline Authorship: GRADE Panels and Byline Conventions
How clinical practice guideline authorship differs from research-paper authorship: GRADE panel composition, conflict-of-interest management, and byline/contributorship reporting conventions.
Who’s Accountable When a Figure Is AI-Generated?
Authors, not AI tools, are accountable for every figure regardless of how it was made. How Nature, Science, Elsevier, IEEE, Cell Press, MDPI, and JAMA distinguish prohibited AI-generated data figures from generally-permitted schematic diagrams and graphical abstracts.
Authorship in ML Competitions: Crediting Organizers vs. Kaggle, NeurIPS, and KDD Cup Teams
How data-science and ML competition papers on Kaggle, the NeurIPS Competition Track, and KDD Cup credit organizers versus winning and runner-up teams — including citation vs. co-authorship conventions, team author-order practices, and where CRediT fits in.
When Does a Biostatistician Qualify for Authorship? ICMJE Criteria Applied to Statistical Collaborators
ICMJE’s four authorship criteria don’t cleanly resolve statistician authorship. See how Rutgers, VCU, Yale, and Northwestern have published their own statistician-specific guidance, plus practical decision criteria.
What Happens When the Corresponding Author Changes Institutions or Leaves Academia
What happens when a published paper’s corresponding author moves institutions, changes email, or leaves academia: how journals handle present-address notes and post-publication corrections, and why ORCID is the durable fix.
The Polymath Project and D.H.J. Polymath: How Crowdsourced Mathematics Decided Authorship
The Polymath Project, Timothy Gowers’s open blog-based mathematics collaboration, published results under the collective pseudonym D.H.J. Polymath rather than a conventional named byline — a genuine alternative to threshold-based authorship criteria like ICMJE’s or CRediT’s.
Authorship vs. Patent Inventorship: Why Your Paper Co-Author List and Patent Inventor List Can Legally Differ
Paper authorship and patent inventorship use different legal tests, so the same project can legitimately produce two different name lists. Here’s why, and how to navigate both.
GPCAP: Authorship and Byline Criteria for Conference Abstracts and Posters
GPCAP sets authorship and byline criteria for company-sponsored conference abstracts, posters, and presentation slides, extending GPP into the conference-specific context.
Retroactive Author Name Change Policy: How Wiley, Elsevier, Taylor & Francis, ACS, APA, ASM, Springer Nature, and Science/AAAS Handle It
A publisher-by-publisher guide to how Wiley, Elsevier, Taylor & Francis, Springer Nature, ACS, APA, ASM, and Science/AAAS handle requests to update an author’s name on already-published papers.
Certified Random Author Order: The AEA’s ⓡ System
The American Economic Association’s Author Randomization Tool lets co-authors generate a genuinely random byline order, sign a consent form, and mark it with the ⓡ symbol — a mechanism proposed by Ray and Robson (2018) to fix the fairness problem alphabetical order creates in economics.
MDPI’s Generative-AI Authorship Policy Explained
MDPI bars generative-AI tools from authorship and requires authors to disclose substantive AI use in the Acknowledgments and Materials and Methods sections; basic language editing is exempt.
IEEE’s Generative AI Authorship Policy: What It Adds Beyond the 3-Part Test
IEEE’s 3-part authorship test predates generative AI and never says a tool can’t satisfy it. IEEE’s separate AI-specific guidance closes that gap: a categorical bar on AI co-authorship, a disclosure requirement, an explicit accountability rationale, and a tie to research-integrity enforcement. This guide breaks down exactly what the AI rule adds on top of the pre-existing test.
Single-Author Norms in Humanities vs Multi-Author Teams in STEM: Why Authorship Criteria Diverge
The humanities’ single-author norm and STEM’s multi-author-team norm reflect two different models of how scholarship gets produced, not a difference in rigor. Why authorship criteria like ICMJE and CRediT apply unevenly across the divide, and what interdisciplinary teams should agree on explicitly.
Mathematics’ Alphabetical Author Order: Origins and How It’s Changing
Mathematics’ alphabetical author-order convention traces to the Hardy-Littlewood collaboration and remains dominant, but adoption has been declining since around 2010 as contribution statements and randomization tools spread from adjacent fields.
Astronomy Survey Authorship: How SDSS, DESI, and Rubin/LSST Compile Author Lists
How SDSS, DESI, and Rubin Observatory/LSST decide who counts as an author on survey papers: Builder/Architect status, the two-set author-order model, and why Rubin/LSST has no single collaboration-wide author list.
SAGE Publishing’s Generative-AI and Authorship Policy: What It Prohibits and What Must Be Disclosed
SAGE Publishing runs separate generative-AI policies for journal articles and for books/learning resources. Both prohibit AI authorship and require disclosure of substantive AI use; only basic language-assistive tools are exempt.
AMA Manual of Style and JAMA Network’s Position on AI and Authorship
JAMA Network and the AMA Manual of Style prohibit AI authorship and require disclosure — but with specific required elements, a mandated manuscript location, and separate peer-reviewer/editor rules that go beyond ICMJE’s general position.
Taylor & Francis’s Generative AI Policy: Authorship Rules and Disclosure Requirements
What Taylor & Francis’s generative AI policy actually requires: no AI tool as author, a named-tool-and-version disclosure statement in Methods or Acknowledgments, and a separate disclose-and-approve process for book authors.
JOSS Authorship Criteria: Who Qualifies as an Author on a Software Paper
JOSS requires substantial, active contribution to the software or paper for co-authorship, and explicitly excludes purely financial or purely supervisory involvement. Here’s exactly what qualifies, how the submitting-author rule works, and how it compares to ICMJE’s four-part test.
Living Systematic Review Authorship: How Rotating Contributor Teams Get Credited
How authorship is decided when a living systematic review’s contributor team changes between update cycles, using ICMJE criteria and the CRediT taxonomy version by version.
RSE Co-Author or Acknowledged Contributor? Applying Authorship Criteria to Software Work
How to apply the ICMJE four-criteria authorship test, CRediT’s Software role, and the FAIR4RS/FORCE11 software citation principles to decide whether a Research Software Engineer’s contribution warrants co-authorship or acknowledgement.
Data Paper Authorship: Who Qualifies as an Author vs. a Data Contributor
How Scientific Data’s ICMJE-based authorship policy applies to data papers: what qualifies someone as an author versus a data contributor who belongs in the acknowledgments or a CRediT statement instead.
Clinical Trial Writing Committees: Crediting the Writing Group vs. the Full Investigator List
How large clinical trials split authorship credit between a small named writing committee and the full investigator/collaborator list, per ICMJE group-authorship rules.
Reagent, Cell-Line, and Animal-Model Sharing: Does Providing Materials Justify Authorship?
Providing a reagent, cell line, or animal model doesn’t by itself meet ICMJE’s authorship criteria. This guide explains why, and how CRediT’s Resources role is the correct way to credit material providers.
Authorship in High-Energy-Physics Megacollaborations: How ATLAS, CMS, and LIGO Assign Order and Credit
How ATLAS, CMS, and LIGO/Virgo assign author order and qualify authorship on papers with hundreds or thousands of names, and where individual credit is actually tracked when the byline carries no contribution signal.
Author Order in China, Japan, and Korea: How It Differs from the West
Bibliometric research shows a real, measurable difference: China, South Korea, and Taiwan most often place the corresponding author last, Japan most often places them second, and the US/UK/Germany most often place them first. Here is what the data shows, why it happens, and what it means for cross-border collaboration.
Posthumous Authorship: How to Credit a Co-Author Who Died Before Publication
How journals credit a co-author who died before publication: ICMJE’s accountability criteria, COPE’s guidance on corresponding-author attestation, footnote/dagger conventions, and what estate or institutional sign-off actually covers.
How to Format the Corresponding-Author Line: Symbols, LaTeX, and Affiliations
How to format the corresponding-author line on a manuscript: asterisk/dagger/superscript conventions, and LaTeX code for authblk, IEEEtran, and acmart affiliation blocks.
Authorship Agreements: Why Research Teams Should Sign One Before Writing Begins
A practical case for establishing a written authorship agreement at project kickoff, before drafting starts: what it should cover, real journal authorship-attestation forms as models, and how to handle disputes.
Co-First Authorship & Equal Contribution: Publisher Conventions and How It’s Cited
How Nature, Elsevier, and PLOS handle co-first / equal-contribution authorship footnotes, and what actually happens to that designation in reference managers, CVs, and citation databases like Scopus and Google Scholar.
Co-Corresponding Authors: How Journals Handle a Shared Corresponding-Author Role
What it means when two or more authors are named co-corresponding author: which journals permit and define the practice, how it is denoted in the byline, why authors request it, and what each co-corresponding author is expected to do after publication.
How Authorship Order Is Decided: Conventions Across Disciplines
Author order follows genuinely different rules by field: alphabetical in mathematics and economics, first-author/senior-author-last in biomedicine, and explicit contribution-based ordering elsewhere. How to identify which applies, and how to agree on one across interdisciplinary teams.
Pros and Cons of Being First Author on a Research Paper
First authorship brings career credit, visibility, and CV weight, but usually comes with a disproportionate workload, negotiation costs, and informal exposure if the paper is later questioned. A practical look at the actual tradeoffs.
BMJ Authorship Guidelines: Guarantor, Transparency Declaration, and How They Go Beyond ICMJE
BMJ builds its authorship policy on baseline ICMJE criteria but adds a named guarantor role, a lead-author transparency declaration, individual ICMJE disclosure forms from every author, and (for some titles) numeric author caps — requirements that trace back to BMJ’s own 1997 contributorship editorial.
NIH Authorship Guidelines: What NIH Actually Requires
NIH doesn’t set independent authorship criteria for grantees — it defers to ICMJE. Here’s what NIH grants policy actually touches, and the one internal exception (NIH’s intramural program).
IEEE Authorship Guidelines: The 3-Part Test and How It Differs from ICMJE
IEEE defines authorship through its own three-part test — distinct from ICMJE’s four criteria — covering intellectual contribution, drafting/revision, and final approval, plus specific corresponding-author duties.
Statement of Authorship: What It Is and What It Certifies
A statement of authorship is a signed declaration each author submits certifying they meet authorship criteria and approve the manuscript — distinct from a published contribution statement.
How to Write an Author Bio for a Journal Submission
A practical guide to writing the short “About the Author” bio journals request at submission: what to include, third-person convention, typical length, and how it differs from a CRediT contribution statement, affiliation listing, or funder biosketch.
ICMJE Authorship Criteria: The 4 Requirements
ICMJE defines authorship as four requirements that must all be met — not a menu. This guide breaks down each criterion, what happens when a contributor meets some but not all of them, and how CRediT documents that gap.
Corresponding Author Responsibilities: What ICMJE Actually Requires
ICMJE defines the corresponding author as far more than a point of contact: administrative completeness at submission, editorial responsiveness through peer review, and open-ended post-publication accountability for data requests and critique.
