9.3 Nonauthor Contributors, Acknowledgments, and CRediT
Key Takeaways
Nonauthor contributors may deserve recognition for real work even though they do not meet all four authorship criteria; recognition should describe the contribution accurately.
ICMJE advises written permission from people named in acknowledgments because readers may infer endorsement; follow the journal’s exact consent and contributor process.
Professional medical writing support should be transparently disclosed under venue requirements, including the nature of assistance and funding; the joint writer statement also recommends name, highest relevant qualification, and affiliation.
CRediT’s 14 roles describe contributions but do not determine who qualifies as an ICMJE author or replace final approval and accountability.
A person should not be moved to an acknowledgment merely to solve an authorship dispute or unavailability; permission, privacy, actual contribution, and journal guidance still matter.
Nonauthor Contributors, Acknowledgments, and CRediT
Many people support a publication without meeting all four authorship criteria. Ethical practice neither erases their work nor turns every contribution into a byline. It describes who did what and who funded the assistance in the form the venue permits.
Nonauthor contributions
Examples can include administrative coordination, technical editing, language editing, laboratory support, data management, statistical programming, recruitment, funding acquisition, general supervision, artwork, and professional medical writing. Some of these activities can contribute to authorship when combined with the other criteria and sufficient intellectual involvement; the job label alone does not decide.
Acknowledge only actual contributions. Do not use an acknowledgment as a consolation prize, as a place to hide a contributor who qualifies for authorship, or as a way to imply that a prominent person endorsed the findings.
Permission to name people
ICMJE notes that acknowledgment can imply endorsement and advises editors to require the corresponding author to obtain written permission from acknowledged individuals. Journals may collect this through email confirmation, a form, or the submission system. Follow the venue's process and retain the evidence required by organizational policy.
Permission to participate in a study is not automatically permission to be named in a publication. The acknowledgment may reveal employment, disease involvement, advisory participation, or another fact. If a contributor declines permission, do not name them. Ask the journal whether an unnamed group description is suitable.
Professional medical writing support
Professional writers can add rigor and efficiency while authors retain intellectual direction, review, approval, and accountability. Writing assistance should be disclosed transparently.
The AMWA–EMWA–ISMPP joint position statement recommends that the acknowledgment describe the nature of support and provide the writer's name, highest relevant qualification, and affiliation, plus the source of funding. A journal may prescribe shorter wording, a contributor statement, or a different location; comply with the venue while preserving the substance.
An example structure is:
Medical writing support in development of the manuscript was provided by [name, relevant qualification], [affiliation], and was funded by [entity].
Customize the statement to what actually happened. “Editorial assistance” is inadequate if the writer developed a first draft. Do not say the writer merely formatted references when they synthesized the study report into prose.
Payment for legitimate writing work is not payment for authorship. If the writer meets all four authorship criteria, evaluate authorship; if not, transparent contributor recognition is appropriate.
CRediT contributor roles
The CRediT taxonomy contains 14 roles:
- Conceptualization
- Data curation
- Formal analysis
- Funding acquisition
- Investigation
- Methodology
- Project administration
- Resources
- Software
- Supervision
- Validation
- Visualization
- Writing – original draft
- Writing – review & editing
CRediT describes contributions. It does not state that one role equals authorship, and it does not encode final approval or accountability. “Writing – original draft” may describe a nonauthor writer; “Funding acquisition” alone does not qualify someone for the byline. Conversely, an author can have several roles.
Assign roles based on documented work and confirm them with contributors. Do not inflate every role for every author to avoid difficult conversations. Follow the journal's implementation, because some accept degree of contribution, multiple roles, group contributors, or machine-readable metadata differently.
Acknowledgment versus contributor statement
A traditional acknowledgment may use prose, while a contributor statement maps roles to individuals. A publication can require both—for example, CRediT for authors and prose disclosure for writing support. Funding, sponsor role, individual interests, and author contributions are distinct statements even if they appear near each other.
For a multicenter study, investigators who do not qualify individually as authors may be listed in a collaborator group or appendix if the journal permits and the listing is accurate. Indexing rules can affect how group members appear in databases, so confirm the venue process before submission.
Changes and unavailable contributors
When roles change, update the contributor record and disclosure. If an author no longer meets the criteria or a nonauthor contributor may now qualify, use the journal's authorship-change procedure. Do not quietly transfer a person between the byline and acknowledgments.
An unreachable contributor cannot be named in an acknowledgment merely because acknowledging them seems transparent. Document outreach and consult the journal. An unnamed description may sometimes preserve recognition without implying personal consent, but the editor decides.
Quality-control questions
Before submission, verify:
- Does every named contribution match documented work?
- Does every author meet the authorship criteria independently of CRediT roles?
- Has required permission to name nonauthors been obtained?
- Are writer identity, role, affiliation, qualification, and funding disclosed as required?
- Are funding, sponsor role, conflicts, and contributions separated accurately?
- Do manuscript, submission system, acknowledgment, and metadata agree?
Important
Transparency means accurate attribution, not maximal naming. Obtain permission, describe the real work, disclose support and funding, and keep CRediT separate from the authorship decision.
Why does ICMJE advise written permission before naming someone in an acknowledgment?
Because acknowledged contributors automatically become copyright owners
Because permission converts a nonauthor into an author
Because readers may infer that a named person endorses the work or conclusions, and naming can reveal an association the person did not agree to disclose.
Because every acknowledgment receives a DOI
Which CRediT role, performed alone, does not establish ICMJE authorship?
Conceptualization
Writing – review & editing
Formal analysis
Funding acquisition
A professional writer drafted a manuscript from verified sources and an author-approved outline. What is an appropriate disclosure?
Describe the writing support and funding according to venue rules; the joint position statement recommends the writer’s name, highest relevant qualification, affiliation, nature of support, and funder.
Do not disclose the writer if the sponsor paid the agency.
List the writer as an author regardless of the four criteria.
Describe the writer only as a proofreader.
Sections you finish are checked off in the contents.