Few conflicts in research are as common, or as bitter, as a dispute over who appears where on the author line. The stakes are real: in many fields position carries career-defining information, and a demotion from first to second author can shape a hiring or tenure decision. These disputes are also largely preventable, and where they are not, there is a well-established process for handling them fairly. This article covers both, drawing on the practical guidance at resolving authorship disputes and the conventions of author order.
Why author order carries so much weight
To prevent disputes you have to understand what is being fought over. In many disciplines, position on the author line is not decorative; it is information. By widespread convention, the first author is the person who contributed most — typically the researcher who did the bulk of the work and wrote the draft. The last author is, in many fields, the senior position: the principal investigator or laboratory head who supervised the work. The corresponding author takes responsibility for the manuscript through review and after publication and is the point of contact for the record. Other conventions exist — alphabetical ordering is standard in mathematics, economics, and parts of the humanities, where order carries no contribution signal at all.
The trouble is that these conventions are field-specific, tacit, and sometimes contradictory. A collaboration spanning disciplines may contain people who each “know” a different rule. When the rule is unstated, the gap fills with assumption, and assumption is where disputes are born.
Prevention: the single most effective measure
The overwhelming majority of author-order disputes can be avoided by one practice: agreeing authorship and order early, explicitly, and in writing — and revisiting the agreement as the work evolves. An early conversation forces the tacit conventions into the open, surfaces disagreement while it is still small, and creates a record to refer back to. The conversation should cover who will be an author at all (under the field’s authorship criteria), the basis for ordering, who will be corresponding author, and how the agreement will be revised if contributions shift. Projects change; an authorship agreement made at the outset should be treated as living, not fixed.
Almost every intractable author-order dispute traces back to a conversation that never happened. The five minutes of awkwardness in agreeing order at the start of a project is the cheapest insurance in research.
How CRediT helps prevent and de-escalate
A contribution statement does not, by itself, decide order — and it is important to be clear that CRediT does not encode author order. It records what each person did, not where they sit on the line. But that very transparency is a powerful preventive tool. When a team fills in a CRediT statement together, mapping each person’s work to the fourteen roles, the relative contributions become explicit and discussable on the basis of fact rather than feeling. A disagreement about order can then be grounded in “who did what”, which is far easier to resolve than a clash of unspoken expectations. CRediT will not tell you who should be first author; it will give you the shared, honest picture of contribution from which a fair ordering conversation can proceed.
When prevention fails: the COPE approach
Sometimes a dispute arrives anyway — a co-author objects to the order at submission, or a contributor demands to be added or removed, or a conflict erupts after acceptance. Editors are not left to improvise. The Committee on Publication Ethics (COPE) publishes flowcharts and guidance for exactly these situations, including changes to authorship after submission and disputes over who should be listed. The COPE approach has a consistent shape worth understanding:
- The journal does not adjudicate the merits. Editors are not equipped, and have no standing, to decide who really contributed most. Their role is to ensure a fair, documented process, not to rule on the underlying contribution claim.
- All listed and proposed authors must agree to any change. An author cannot be added, removed, or reordered without the documented agreement of all parties concerned.
- The dispute is referred to the institution. Where authors cannot agree, COPE directs editors to ask the authors’ institution(s) to investigate, because the institution — not the journal — has the authority and the facts to resolve a contribution dispute.
- The manuscript is paused, not pushed through. Publication is typically held until the dispute is resolved, so that the journal does not put its name to a contested authorship record.
This division of labour is deliberate. The journal protects the integrity of the record by refusing to publish a disputed author list; the institution, which employs the people and holds the project records, does the fact-finding. Following the COPE flowchart gives editors a defensible, even-handed process and protects everyone involved from arbitrary decisions.
A note on changing authorship after submission
Requests to add or remove an author after submission are a frequent flashpoint and deserve particular care. A legitimate request — a contributor was genuinely overlooked, or a listed person turns out not to meet the criteria — should be handled transparently, with a clear written explanation and the agreement of all authors. A request that looks like a late attempt to add a guest author, or to remove someone out of conflict, is exactly the situation the COPE guidance is built to slow down and document. The bright line is the same one that governs authorship generally: the list must reflect genuine contribution and accountability, not convenience or pressure.
Where shared vocabulary fits
“First author”, “corresponding author”, “senior author”, and the meaning of order itself vary by discipline, and that variation is a frequent source of cross-field confusion. A shared, federated vocabulary that defines these roles and conventions precisely — pointing back to COPE for dispute handling and to ICMJE for the authorship criteria — is what lets collaborators from different fields negotiate on common terms. Supplying that definitional layer is the role the CASRAI dictionary is designed to play; the relevant terms sit in the research-integrity domain.