Few things sour a collaboration faster than a disagreement over authorship: who is included, who is left off, and in what order. The good news is that most of these disputes are preventable with clear criteria and one honest conversation at the start.
What authorship actually requires
The widely used ICMJE criteria say an author should meet all four conditions: (1) substantial contributions to the conception, design, data, or analysis; (2) drafting or critically revising the work; (3) approving the final version; and (4) agreeing to be accountable for it. Contributors who do not meet all four should be acknowledged, not listed as authors.
That framework names three problems directly: ghost authorship (a real contributor left off), gift or honorary authorship (a name added without genuine contribution, often a senior figure), and guest authorship (added to lend prestige). All three distort the record of who did what.
Make credit visible with CRediT
The byline alone cannot capture who did the statistics, who wrote the first draft, and who curated the data. The CRediT contributor taxonomy — a formal standard with 14 defined roles — lets you state each person's specific contribution. It rewards the people whose work is often invisible and reduces the temptation to fight over a single ordered list.
Prevent the dispute
- Talk early. Agree on authorship and order at the start of the project, and revisit it if contributions change.
- Write it down. A short shared note on expectations saves a great deal later.
- Use CRediT statements so credit is explicit rather than implied.
- Acknowledge everyone who helped but does not meet authorship criteria.
Fair authorship is not bureaucracy — it is respect for the people who made the work possible, and honesty toward the readers who rely on it.
