Definition · Plain-language
What is the CRediT taxonomy?
The Contributor Roles Taxonomy (CRediT) is a standardised, high-level vocabulary of 14 roles describing the contributions made by researchers to scholarly output — from conceptualisation and data curation through to writing and visualisation.
The step most authors miss
Doing CRediT right? Don’t stop at the statement.
A CRediT statement credits you inside one paper. The recognition CRediT was built for happens when those roles are tied to you, persistently. Sign in with your ORCID — free — and claim your CRediT contributions on casrai.org, the home of the standard. They become a verified, portable part of your identity, not a line that disappears into one PDF.
Free: claim your contributions, then export a journal-ready CRediT statement, schema.org structured data, JATS XML, CSV or BibTeX — and preview your public profile. A membership publishes that profile publicly and verifies the journals you serve.
The problem CRediT was designed to solve
Traditional authorship lists in scientific papers conflate many different kinds of contribution under a single credit unit — the author name. A senior professor who supervised the project and a postdoc who ran every experiment both appear identically on the author list. Conversely, researchers who made real contributions — collecting field data, writing analysis software, curating datasets — were often relegated to an acknowledgements section or omitted entirely. CRediT was designed to replace this blunt instrument with a granular, standardised vocabulary that can be attached to individual author names, making the division of labour transparent and machine-readable.
Origins and standardisation
CASRAI originated the Contributor Roles Taxonomy in 2014 through a workshop convened at Harvard University with partners including Wellcome Trust, PLOS, Cell Press, and others. The resulting vocabulary was published in a 2014 Nature commentary by Amy Brand, Liz Allen, Micah Altman, Marjorie Hlava, and Jo Scott. CASRAI stewarded the vocabulary as a community standard from 2014 to 2021. In February 2022, NISO published ANSI/NISO Z39.104-2022 — the formal American national standard for CRediT — with a CC BY 4.0 licence, making it freely usable by any publisher or system.
The 14 roles
ANSI/NISO Z39.104-2022 defines exactly 14 contributor roles, grouped into four clusters. Planning and design: Conceptualisation, Methodology, Software. Research and analysis: Validation, Formal analysis, Investigation, Resources, Data curation. Communication: Writing – original draft, Writing – review and editing, Visualisation. Management: Supervision, Project administration, Funding acquisition. Each role carries an optional degree qualifier — lead, equal, or supporting — allowing nuanced credit where contributions differ in depth.
Adoption and integration
CRediT has been adopted by more than 1,400 journals across Elsevier, Springer Nature, Wiley, PLOS, Frontiers, MDPI, Taylor and Francis, and many others. It is embedded in JATS (Journal Article Tag Suite) XML as the standard machine-readable format for contributor metadata, and CrossRef captures CRediT data in DOI records. ORCID integrates CRediT roles in researcher profiles, so when a publisher captures a structured contribution statement, those roles can flow automatically into the author's ORCID record. The NISO CRediT Standing Committee continues to maintain and evolve the standard.
Key facts
At a glance
- Full name: Contributor Roles Taxonomy (CRediT)
- Originated: CASRAI, 2014 (Harvard workshop with Wellcome Trust, PLOS, Cell Press)
- Standard: ANSI/NISO Z39.104-2022, published by NISO, February 2022
- Licence: CC BY 4.0 — freely usable
- Roles: 14, each with optional lead / equal / supporting qualifier
- Adoption: 1,400+ journals; embedded in JATS XML and CrossRef metadata
- Integration: ORCID receives CRediT roles from publisher submission systems
- Purpose: granular, machine-readable attribution replacing vague author lists
Common misconceptions
What people often get wrong
Often heard: CASRAI owns the CRediT taxonomy.
Actually: CASRAI originated CRediT in 2014, but the standard is now stewarded by NISO as ANSI/NISO Z39.104-2022. NISO maintains the Standing Committee and holds stewardship of the published standard.
Often heard: CRediT replaces authorship — you no longer need to be an "author".
Actually: CRediT does not replace authorship; it supplements it. A paper still has a named author list. CRediT adds a structured statement specifying which of the 14 roles each author performed, alongside (not instead of) ICMJE or journal authorship criteria.
Often heard: The 14 CRediT roles are just suggestions and publishers can add their own.
Actually: ANSI/NISO Z39.104-2022 defines exactly 14 roles. Publishers and systems should not add custom roles, as this breaks interoperability. The standard does allow for future revision through the NISO Standing Committee process.
Common questions
FAQ
Where can I find the official CRediT taxonomy?+
The NISO-stewarded standard is available at credit.niso.org and as a free PDF download from NISO. CASRAI maintains a canonical identifier namespace and role definitions at casrai.org/credit.
Is CRediT required by all journals?+
No. Adoption varies by publisher and journal. Elsevier, Springer Nature (Nature family), PLOS, Frontiers, and others require it for some or all journals. Many more encourage it. Check individual journal author guidelines.
Can more than one author share the same CRediT role?+
Yes. Multiple authors can receive the same role, and one author can hold multiple roles. The optional "lead", "equal", or "supporting" qualifier helps distinguish degree of contribution when roles are shared.
