A Guide to Authorship in Research and Scholarly Publishing

Key Takeaways:

• Authorship is defined by contribution, not seniority. The ICMJE’s 4 criteria and the CRediT taxonomy are the two frameworks most journals now use to assign credit.
• Ghost, gift, and honorary authorship are the 3 most common ethical violations in scholarly publishing, and no major journal or committee allows AI tools to be listed as authors.
• Author order and first authorship carry real career weight. Negotiating them early and in writing prevents most disputes later on.
• Undergrad and grad students can improve their odds of first authorship through early, sustained, high-value contributions, not simply by logging the most lab hours.

Glossary of Key Terms

How Is Authorship in Research Defined?

What are the ICMJE criteria for authorship?

The International Committee of Medical Journal Editors, or ICMJE, defines authorship using 4 criteria that must all be met. An author must make a substantial contribution to the idea, design, data collection, or analysis. They must help draft or critically revise the manuscript. They must approve the final version for publication. They must agree to be accountable for the accuracy and integrity of the work.

These 4 criteria apply together, not separately. A person who only collected data but did not help write or revise the manuscript would not meet the full definition of authorship under ICMJE guidance, even in fields outside medicine that have adopted the same standard.

When should authorship be decided?

According to the Committee on Publication Ethics, or COPE, the ideal time to settle authorship is before the research project begins, not after the research paper is drafted. COPE recommends that research teams create a written author agreement and revisit it as the project evolves, since roles, contributions, and even team membership often shift over months or years of work.

Any later change to the author list, whether it involves a shift in contribution, or the addition or removal of a team member, should be approved by everyone involved and reflected accurately in the final byline submitted to the journal.

The CRediT Taxonomy: A Modern Framework for Contribution

What is the CRediT taxonomy?

CRediT, short for Contributor Roles Taxonomy, is a standardized set of 14 roles that journals now use to describe precisely what each author did. Rather than relying on author order alone to signal contribution, CRediT lets teams tag each person against specific roles, giving readers, funders, and hiring committees a clearer picture of who did what.

How does CRediT differ from traditional authorship listing?

Traditional author lists show only names and order, which forces readers to guess at each person’s real contribution. CRediT instead publishes a short contribution statement alongside the paper, listing every author against the specific roles they filled. A person can satisfy authorship criteria while contributing to only a few CRediT roles, as long as the ICMJE conditions are also met.

Sample Author Contribution Statement

Here’s an example of what an author contribution statement looks like. Some journals accept initials for authors, while others expect the full names to be given.

• PS: Conceptualization, Methodology, Formal analysis, Writing, original draft.
• JO: Investigation, Data curation, Software, Visualization.
• WL: Investigation, Validation, Writing, review and editing.
• SM: Resources, Supervision, Project administration, Funding acquisition, Writing, review and editing.

All authors reviewed and approved the final manuscript.

Author and Contributor Roles Explained

Growing pressure to publish, combined with an increase in multi-author projects, makes it harder to separate authors, co-authors, and contributors. Confusing these roles is one of the most common sources of conflict in scholarly publishing. The table below summarizes the standard distinctions.

Understanding Author Order and Position

How is the order of authors in research decided?

Author order can matter as much to a career as the raw number of papers published, yet practices differ sharply across research fields. There is still no single global standard, and journals rarely intervene in order disputes, which leaves teams responsible for agreeing on a fair approach themselves.

What is co-first authorship and when is it used?

Co-first, or equal-contribution, authorship is used when 2 or more researchers contributed comparably to the work and neither can reasonably be ranked above the other. Journals typically mark this with a footnote such as “these authors contributed equally,” alongside the names. This practice has become far more common over the last 10 to 15 years as collaborative, multi-lab projects have grown.

See also: Author Affiliations in Research Papers: Answering Your Top 3 Queries

Ghost, Gift, and Honorary Authorship: Naming the Problem

Scholarly publishing continues to be affected by authorship practices that break with ICMJE and CRediT standards. These behaviors have specific names that researchers should recognize, since they are the terms used in journal policies, institutional investigations, and research integrity training.

The International Center for Academic Integrity also flags related misconduct, including changing author order without justification, using authority to add an uninvolved person, removing a contributor’s name from later publications, and listing someone as an author without their consent. Any of these can trigger a formal investigation by a journal or institution.

Can AI Tools Be Listed as an Author?

Can AI tools like ChatGPT be credited as an author on a paper?

No. Every major publishing body, including the ICMJE, COPE, and leading journals such as Nature, Science, and JAMA, prohibits listing AI tools as authors or co-authors. The reasoning is consistent: authorship requires accountability, and an AI system cannot take responsibility for a manuscript’s accuracy or defend it if challenged.

Where AI tools are permitted at all, it is only for tasks such as language polishing, formatting, or literature searching, and only with full disclosure in the manuscript or cover letter. Authors remain fully responsible for verifying any AI-generated text, data summary, or image, and undisclosed AI use can be treated as a form of research misconduct.

Resolving Authorship Disputes

What should you do if you disagree with your author position?

Raise the concern directly and early with the corresponding author or team lead, ideally before submission rather than after publication. Most disputes are easier to resolve while the manuscript is still in draft form, since author order changes after acceptance often require formal correction requests to the journal.

If a direct conversation does not resolve the issue, most institutions maintain a research integrity office or ombudsperson who can mediate. COPE also publishes flowcharts that editors use to handle authorship complaints, covering situations such as a disputed order, an omitted contributor, or a name added without consent. These flowcharts describe a stepwise process rather than a single fixed rule.

• Document contributions as you go, using dated notes, emails, or a shared project log.
• Raise concerns in writing, not only verbally, so there is a clear record.
• Escalate to a department chair or research integrity office if a direct conversation fails.
• Request journal-level correction only as a last resort, since it becomes a permanent, public record.

See also: Authorship in Research: Single vs Multiple Authors in Research papers 

Author Identification and Accountability

What is an ORCID iD and why does it matter for authorship?

An ORCID iD is a free, permanent digital identifier that distinguishes a researcher from others with the same or similar name. Many journals now require corresponding authors, and sometimes all authors, to supply an ORCID iD at submission. It links a person’s work across journals, institutions, and name changes, which strengthens the record of who actually did what.

Preprints and Authorship

Can the author list change between a preprint and the final published paper?

Yes, and it happens routinely. Preprint servers post a manuscript before formal peer review, and the author list at that stage reflects contributions up to posting. Peer review often adds analyses, revisions, or new experiments, and the final published version may add or remove authors accordingly, provided the change follows the same consent and documentation standards used for any other authorship revision.

A Detailed Guide for Undergrad and Grad Students: Earning First Authorship

When should a student expect to be considered for first authorship?

A student can reasonably expect first authorship when they perform the majority of the hands-on work, including data collection or experiments, and also take the lead role in drafting and revising the manuscript. Doing the most laboratory hours alone is not enough; the ICMJE criteria require intellectual contribution and manuscript involvement, not just task volume.

How can students position themselves for first authorship?

• Volunteer for the parts of a project that touch study design and analysis, not only routine data collection.
• Ask to help draft sections of the manuscript early, even a methods section, rather than waiting to be assigned writing later.
• Keep a dated log of tasks completed, including analyses run and drafts written, as evidence of contribution.
• Clarify authorship expectations with your advisor at the start of the project, in writing if possible.
• Take ownership of at least one full stage of the project, such as the literature review, statistical analysis, or figure preparation.
• Present the work at lab meetings or conferences, which builds a visible record of leadership on the project.

How do you negotiate co-first authorship?

Co-first authorship negotiations go best when framed around documented contribution rather than personal fairness. Bring a specific, dated list of tasks completed by each person, and propose the standard equal-contribution footnote as a solution rather than asking to simply swap positions. Suggest the conversation happen before submission, since changing an order after acceptance is far harder administratively.

• Compare contributions using CRediT roles, not general impressions, to keep the discussion objective.
• Propose co-first authorship with an equal-contribution footnote as a concrete, precedented solution.
• Involve the corresponding author or advisor early, rather than negotiating only between peers.
• Put the agreed outcome in writing, such as a brief email confirming the order and reasoning.

What should you do if an authorship dispute arises with your advisor?

Request a private conversation focused on documented contributions rather than seniority. If the disagreement persists, most universities allow students to consult a graduate ombudsperson, a research integrity office, or a departmental committee without directly confronting the advisor again. Students should raise concerns before submission whenever possible, since journals treat post-publication authorship changes as formal corrections.

See also: How to Choose a Journal: Where to Publish Your Research

Avoiding Unethical Authorship in Research

Correctly conveying who is responsible for published research sits at the core of scientific integrity. Despite clear guidelines from ICMJE and COPE, scholarly publishing continues to see recurring ethical problems around who is credited and who is left out. Understanding the specific forms these problems take is the first step toward avoiding them.

• Changing the order of authors in an unjustified or unapproved way.
• Using seniority or authority to add someone who did not contribute.
• Removing a contributor’s name from a later, related publication.
• Listing a person as an author without obtaining their consent.

Every author is responsible for preserving scientific integrity, which depends on research being conducted and documented honestly at every stage, from the original idea through final publication and any later corrections.

Practical Tools: Author Agreements and Contribution Statements

A short, written author agreement drafted at the start of a project prevents most disputes later. It does not need to be formal or legal in tone; a shared document or email thread that all team members can reference is usually sufficient, as long as it is dated and revisited as the project changes.

What should a basic author agreement include?

• The names of everyone expected to contribute, and their anticipated roles.
• A proposed author order, with a note on how it may change as work progresses.
• The criteria the team will use to decide final authorship, such as the ICMJE 4 conditions.
• A plan for revisiting the agreement at key milestones, such as after data collection or before submission.

A CRediT-style contribution statement can accompany the final manuscript, listing each author against the specific roles they filled, such as conceptualization, formal analysis, or writing, original draft. This statement gives readers, funders, and hiring committees a transparent, specific record that goes beyond the author list alone.

Frequently Asked Questions

How many authors can a research paper have?

There is no fixed upper limit. Most journal articles list somewhere between 1 and 10 authors, but large collaborative projects can list hundreds or even thousands. A physics paper from the ATLAS experiment at CERN once listed more than 5,000 authors, reflecting the scale of modern, multi-institution research collaborations.

What is the difference between an author and a contributor in a research paper?

An author meets all 4 ICMJE criteria, including manuscript drafting or revision and final approval. A contributor may have provided resources, technical help, or planning support without meeting those full criteria, and is typically named in an acknowledgments section rather than the author byline.

Can a supervisor be added as an author without contributing to the research?

No. Adding a supervisor or any senior figure without a qualifying contribution is considered honorary or gift authorship, which violates ICMJE and COPE standards. A supervisor should only be listed as an author if they meet the same 4 criteria applied to every other author on the paper.

What happens if you are not given authorship you believe you deserve?

Raise the issue directly with the corresponding author or advisor, ideally before submission, and bring documented evidence of your contribution. If that does not resolve it, most universities and journals offer a research integrity office, ombudsperson, or formal complaint process to review the dispute.

Is alphabetical order a fair way to list authors on a paper?

It depends on the field. Alphabetical order removes some bias tied to contribution ranking, but it can disadvantage authors whose names fall later in the alphabet, since they may be cited less visibly. Many disciplines outside physics and mathematics prefer contribution-based order for this reason.

Can the same person be both first author and corresponding author?

Yes. It is common, especially in graduate research, for the first author to also serve as the corresponding author, managing submission and journal communication. The 2 roles are independent, and a paper can also assign them to different people, such as a student first author and a faculty corresponding author.

Does author order affect citation count or career advancement?

Yes, in most fields. First and last author positions typically carry the most weight in hiring, promotion, and grant review, since they signal leadership on the project. Middle-author positions still count as a publication credit but usually carry less weight in formal evaluations.

Can undisclosed AI-generated text disqualify a paper from publication?

Yes. Failing to disclose AI-assisted writing, editing, or analysis can be treated as a form of research misconduct by most journals, which may lead to rejection, retraction, or a formal integrity investigation. Disclosed and verified AI assistance for tasks like language editing is generally permitted, but the AI tool itself can never be listed as an author.

What should be included in an author contribution statement?

A contribution statement should list every author by name and specify their role using clear categories, such as the 14 CRediT roles. Common entries include conceptualization, data curation, formal analysis, writing the original draft, and supervision. This statement is typically placed just before the references section of a published paper.

References

1. Mazzocchi F. Scientific research across and beyond disciplines: Challenges and opportunities of interdisciplinarity. EMBO Reports, June 2019. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6549017/
2. Castelvecchi, D. Physics paper sets record with more than 5,000 authors. Nature, May 2015. https://www.nature.com/articles/nature.2015.17567
3. Dance, A. Authorship: Who’s on first?. Nature, September 2012. https://www.nature.com/articles/nj7417-591a
4. Unethical Authorship; How to Avoid? Blog – Canadian Institute for Knowledge Development, February 2020. https://icndbm.cikd.ca/unethical-authorship-how-to-avoid/

This article was originally published on December 2, 2022, and updated on July 12, 2026.