Examples
Worked examples
- Is an instance
Submitting the same randomised-trial results to two journals simultaneously, with one accepted and published while the other is still in review.
Counter-examples
Looks similar, but isn't
- Not an instance
A conference abstract followed by a full journal article that cites and expands the abstract with additional analysis.
Editorial commentary
Duplicate publication inflates the apparent evidence base, biases meta-analyses, and wastes peer-review and publication capacity. It is distinct from legitimate secondary publication (e.g., translation into another language, conference-to-journal progression with significant added analysis) which is permitted when both editors agree and the relationship is disclosed. ICMJE provides explicit criteria for acceptable secondary publication.
References
- ICMJE Recommendations (current edition)
- COPE Flowchart: Suspected Redundant Publication (2013, updated 2018)
Also known as
redundant publication · dual publication
Machine-readable encodings
Use in your systems
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vocab-term="Duplicate publication"
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"description": "Publishing the same study, or substantially the same study, in more than one venue without cross-reference and editorial permission. Two articles are duplicates if they share the same hypothesis, sample, methods, and core results to a degree that a meta-analyst would not treat them as independent.",
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