Direct comparison
Corresponding Author vs. First Author (ICMJE)
First author signals contribution/byline order; corresponding author is ICMJE's defined communication role. Compare what each means, and when they overlap.
Side-by-side comparison
| Dimension | First Author | Corresponding Author |
|---|---|---|
| What it defines | Position in the byline (typically leftmost/first-listed) | Who communicates with the journal and remains accountable for the paper |
| Defined by | Discipline/journal convention — not defined by ICMJE | ICMJE recommendations (implemented via individual journal policy) |
| What it typically signals | Largest individual contribution, in fields where order is contribution-based (biomedical, most life sciences) | Administrative completeness and availability for editorial/post-publication queries — not contribution size |
| Timing of responsibility | None — it is a static position, not an ongoing duty | Active across submission, peer review, AND after publication (critiques, data requests) |
| Can be delegated | Not applicable | Underlying administrative tasks may be delegated to co-authors; accountability is not |
| One per paper? | One, unless the journal recognizes co-first authorship | Usually one, but co-corresponding authors are allowed at some journals' discretion |
| Part of CRediT's 14 roles? | No — byline order and CRediT roles are independent systems | No — CRediT describes contribution type, not communication or byline role |
| Reliable across disciplines? | No — alphabetical-order fields (e.g. some physics, math, economics subfields) strip the contribution signal entirely | Yes — ICMJE's definition is discipline-agnostic for journals that follow it |
| Who typically holds it | Often a graduate student, postdoc, or other researcher who did most of the hands-on work | Often the principal investigator/senior author, for institutional continuity — but not required |
Common questions
FAQ
Can the first author also be the corresponding author?+
Yes — ICMJE places no restriction on this, and it is common, especially when an early-career researcher wants visible ownership of both the intellectual contribution and post-publication accountability.
Why is the senior author usually the corresponding author instead of the first author?+
It is a common convention, not an ICMJE requirement. Senior authors (often PIs) tend to have the institutional continuity — stable contact information, ongoing access to data — that post-publication responsiveness requires, especially after a first-author trainee moves institutions.
Does being corresponding author count as more credit than being first author?+
They are not directly comparable — one reflects contribution size (in fields where order is contribution-based), the other reflects a communication and accountability role. Tenure and promotion committees weigh each differently, and practice varies by institution and field.
Is corresponding author one of the ICMJE authorship criteria?+
No. Meeting ICMJE's four authorship criteria is what makes someone an author at all. Corresponding author is a separate role assigned among authors who already qualify.
