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Questionable research practices in ecology and evolution
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Abstract
We surveyed 807 researchers (494 ecologists and 313 evolutionary biologists) about their use of Questionable Research Practices (QRPs), including cherry picking statistically significant results, p hacking, and hypothesising after the results are known (HARKing). We also asked them to estimate the proportion of their colleagues that use each of these QRPs. Several of the QRPs were prevalent within the ecology and evolution research community. Across the two groups, we found 64% of surveyed researchers reported they had at least once failed to report results because they were not statistically significant (cherry picking); 42% had collected more data after inspecting whether results were statistically significant (a form of p hacking) and 51% had reported an unexpected finding as though it had been hypothesised from the start (HARKing). Such practices have been directly implicated in the low rates of reproducible results uncovered by recent large scale replication studies in psychology and other disciplines. The rates of QRPs found in this study are comparable with the rates seen in psychology, indicating that the reproducibility problems discovered in psychology are also likely to be present in ecology and evolution.
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![Fig 1 The prevalence of Questionable Research Practices in ecology and evolution. Light columns represent the proportion of evolution researchers and dark columns represent the proportion of ecology researchers who reported having used a practice at least once. The dots show researchers’ mean estimates of suspected use by colleagues in their field. Dots that are much higher than bars may suggest that the QRP is considered particularly socially unacceptable [17]. Error bars are 95% confidence intervals.](/paper-figures/aba97d2a269642d791e29e0ac6471d0b/questionable-research-practices-in-ecology-and-evolution-figure-1.jpg)

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“however, researchers are often unfamiliar with the much larger systemic bias in the publication of research and in the reliability of certain findings and even of entire fields [33, 38–40].”
From The ARRIVE guidelines 2.0: Updated guidelines for reporting animal research (2020) · cites this paper as [39]
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Metadata
- Authors
- Fraser, H., Parker, T., Nakagawa, S., Barnett, A., & Fidler, F.
- Affiliations
- The University of Melbourne (AU)
- Whitman College (US)
- UNSW Sydney (AU)
- Corresponding author
- Fraser, Hannah
- Venue
- PLOS ONE
- Publisher
- Public Library of Science (PLoS)
- Published
- 2018-07-16
- Volume
- 13
- Issue
- 7
- Pages
- e0200303
- ISSN
- 1932-6203 (ISSN-L)
- PMC
- PMC6047784
- OpenAlex
- W2793861965
- Cited by
- 346
- References
- 45
- Citations by year
- 2026: 17 · 2025: 29 · 2024: 42 · 2023: 51 · 2022: 37 · 2021: 51 · 2020: 57 · 2019: 45 · 2018: 15
- FWCI
- 83.45
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- PLoS ONE (publishedVersion, cc-by)
- Europe PMC (PubMed Central) (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- EcoEvoRxiv (submittedVersion, cc-by)
- RePEc: Research Papers in Economics (submittedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Figshare (submittedVersion, cc-by)
- Minerva Access (University of Melbourne) (submittedVersion, cc-by)
- EcoEvoRxiv (submittedVersion)
- OSF Preprints (OSF Preprints) (submittedVersion)
- Funders
- Australian Research Council Future Fellowship (FT150100297)
- Topics
- Social Sciences › Education › Academic integrity and plagiarism
- Social Sciences › Decision Sciences › Statistics, Probability and Uncertainty › Meta-analysis and systematic reviews
- Social Sciences › Library and Information Sciences › Academic Publishing and Open Access
- Keywords
- questionable research practices, cherry-picking, p-hacking, HARKing, research integrity, reproducibility, ecology, evolutionary biology, replication study, statistical significance
- MeSH terms
- Ecology, Biological Evolution, Humans, Surveys and Questionnaires, Research, Research Design, Research Personnel, Statistics as Topic, Reproducibility of Results, Scientific Misconduct
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