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Methods Matter: p-Hacking and Publication Bias in Causal Analysis in Economics: Comment

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  • Sebastian Kranz
  • Peter Pütz

Abstract

Brodeur, Cook, and Heyes (2020) study hypothesis tests from economic articles and find evidence for p-hacking and publication bias, in particular for instrumental variable and difference-in-difference studies. When adjusting for rounding errors (introducing a novel method), statistical evidence for p-hacking from randomization tests and caliper tests at the 5 percent significance threshold vanishes for difference-in-difference studies but remains for instrumental variable studies. Results at the 1 percent and 10 percent significance thresholds remain largely similar. In addition, Brodeur, Cook, and Heyes derive latent distributions of z-statistics absent publication bias using two different approaches. We establish for each approach a result that challenges its applicability.

Suggested Citation

  • Sebastian Kranz & Peter Pütz, 2022. "Methods Matter: p-Hacking and Publication Bias in Causal Analysis in Economics: Comment," American Economic Review, American Economic Association, vol. 112(9), pages 3124-3136, September.
    • Handle: RePEc:aea:aecrev:v:112:y:2022:i:9:p:3124-36
    DOI: 10.1257/aer.20210121
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    Cited by:

    1. Danielle V. Handel & Eric A. Hanushek, 2024. "Contexts of Convenience: Generalizing from Published Evaluations of School Finance Policies," Evaluation Review, , vol. 48(3), pages 461-494, June.
    2. Irsova, Zuzana & Bom, Pedro R. D. & Havranek, Tomas & Rachinger, Heiko, 2023. "Spurious Precision in Meta-Analysis," EconStor Preprints 268683, ZBW - Leibniz Information Centre for Economics.
    3. Ankel-Peters, Jörg & Fiala, Nathan & Neubauer, Florian, 2023. "Do economists replicate?," Journal of Economic Behavior & Organization, Elsevier, vol. 212(C), pages 219-232.
    4. Abel Brodeur & Scott Carrell & David Figlio & Lester Lusher, 2023. "Unpacking P-hacking and Publication Bias," American Economic Review, American Economic Association, vol. 113(11), pages 2974-3002, November.
    5. Elminejad, Ali & Havranek, Tomas & Irsova, Zuzana, 2022. "Relative Risk Aversion: A Meta-Analysis," MetaArXiv b8uhe, Center for Open Science.

    More about this item

    JEL classification:

    • A14 - General Economics and Teaching - - General Economics - - - Sociology of Economics
    • C12 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods and Methodology: General - - - Hypothesis Testing: General
    • C52 - Mathematical and Quantitative Methods - - Econometric Modeling - - - Model Evaluation, Validation, and Selection

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