Authorship

Authorship is the formal designation of individuals who have made substantial intellectual contributions to a research work. It carries both credit and responsibility, and it is governed by criteria such as those established by the International Committee of Medical Journal Editors (ICMJE), which require that each author meet all four of the following conditions: substantial contributions to conception or design or to data acquisition, analysis, or interpretation, drafting or critically revising the manuscript, approving the final version, and agreeing to be accountable for all aspects of the work.

Authorship is the primary currency of academic career advancement. It determines who receives credit for scientific contributions and who bears responsibility for the integrity of the findings. Disputes over authorship are a frequent ethical issue in research, and inappropriate authorship practices undermine the credibility of the scientific record. Honorary authorship (listing individuals who did not contribute substantively), ghost authorship (omitting individuals who did contribute), and gift authorship (adding names as a favor or to enhance a paper's credibility) violate ethical standards and can damage professional relationships and institutional reputations. Funding agencies, promotion committees, and tenure boards evaluate researchers based on their publication records, making fair authorship attribution essential for career equity.

The ICMJE criteria, widely adopted across biomedical and health science journals, define authorship through four cumulative requirements. First, the individual must have made a substantial contribution to the conception or design of the study, or to the acquisition, analysis, or interpretation of data. Second, they must have participated in drafting the manuscript or revising it critically for important intellectual content. Third, they must have approved the final version to be published. Fourth, they must agree to be accountable for all aspects of the work, ensuring that questions related to any part of the work are appropriately investigated and resolved.

Individuals who meet some but not all criteria should be listed in the acknowledgments section rather than as authors. The ICMJE gives acquisition of funding, general supervision of a research group, general administrative support, and writing assistance, technical editing, language editing, or proofreading as examples of contributions that do not, on their own, qualify for authorship. Contributors such as data entry staff, laboratory technicians who performed routine analyses, or administrators who facilitated funding may warrant acknowledgment but not authorship unless their contributions meet all four ICMJE criteria. The ICMJE also asks that everyone who meets the first criterion be given the opportunity to take part in drafting or critically reviewing the manuscript and in approving the final version, so the criteria cannot be used to shut out a colleague who has earned authorship.

Author order conventions vary by discipline. In biomedical sciences, the first author is typically the person who contributed most to the research and manuscript preparation, and the last author is usually the senior investigator who supervised the project. Middle author positions reflect varying levels of contribution. In some fields, alphabetical listing is conventional. Some journals now require a contributor roles taxonomy (CRediT) statement that specifies each author's role (conceptualization, methodology, investigation, writing, supervision, etc.), increasing transparency.

Authorship decisions should be discussed and agreed upon early in the research process, ideally at the project's inception, and revisited as contributions evolve. Written agreements documenting expected contributions and authorship expectations can prevent disputes. In journals that follow the ICMJE recommendations, any researcher who meets all four criteria should be offered authorship; conversely, no one should be listed as an author who does not meet all four criteria, regardless of their seniority or institutional affiliation.

A common error is adding authors who did not make substantive intellectual contributions, often because of power dynamics (a department head expects authorship on all work from their unit) or reciprocal arrangements (adding a colleague in exchange for being added to their paper). This practice devalues authorship and can expose the listed authors to accountability for work they did not perform.

Another frequent mistake is failing to discuss authorship expectations at the beginning of a project, which leads to disputes when the manuscript is ready for submission. These disputes can delay publication, damage collaborations, and create lasting professional conflicts. Researchers should also be aware that different journals and disciplines may have different conventions, and what counts as "first author" contribution in one field may not apply in another. Finally, omitting contributors who deserve authorship, particularly students, junior researchers, or collaborators in lower income countries, raises equity and ethical concerns.

A multicenter clinical trial produces a manuscript with 14 listed authors. During the submission process, the journal's editor asks for a CRediT statement. The corresponding author discloses that three of the listed authors contributed only by referring and caring for study patients at their respective sites, without any involvement in the design, data analysis, manuscript drafting, or critical revision. These three individuals are moved to the acknowledgments section, and the final manuscript lists 11 authors who each meet all four ICMJE criteria, with a detailed CRediT taxonomy documenting their specific contributions.