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

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  • Abel Brodeur
  • Nikolai Cook
  • Anthony Heyes

Abstract

In Brodeur, Cook, and Heyes (2020) we present evidence that instrumental variable (and to a lesser extent difference-in-difference) articles are more p-hacked than randomized controlled trial and regression discontinuity design articles. We also find no evidence that (i) articles published in the top five journals are different; (ii) the "revise and resubmit" process mitigates the problem; (iii) things are improving through time. Kranz and Pütz (2022) apply a novel adjustment to address rounding errors. They successfully replicate our results with the exception of our shakiest finding: after adjusting for rounding errors, bunching of test statistics for difference-in-difference articles is now smaller around the 5 percent level (and coincidentally larger at the 10 percent level).

Suggested Citation

  • Abel Brodeur & Nikolai Cook & Anthony Heyes, 2022. "Methods Matter: p-Hacking and Publication Bias in Causal Analysis in Economics: Reply," American Economic Review, American Economic Association, vol. 112(9), pages 3137-3139, September.
    • Handle: RePEc:aea:aecrev:v:112:y:2022:i:9:p:3137-39
    DOI: 10.1257/aer.20220277
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    References listed on IDEAS

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    1. Abel Brodeur & Mathias Lé & Marc Sangnier & Yanos Zylberberg, 2016. "Star Wars: The Empirics Strike Back," American Economic Journal: Applied Economics, American Economic Association, vol. 8(1), pages 1-32, January.
    2. Abel Brodeur & Nikolai Cook & Anthony Heyes, 2020. "Methods Matter: p-Hacking and Publication Bias in Causal Analysis in Economics," American Economic Review, American Economic Association, vol. 110(11), pages 3634-3660, November.
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    Cited by:

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    3. Mußhoff, Oliver & Ölkers, Tim & Kirchner, Ella, 2024. "A note on the discussion regarding terrorism and land use in agriculture," Land Use Policy, Elsevier, vol. 144(C).
    4. Ankel-Peters, Jörg & Schmidt, Christoph M., 2023. "Rural electrification, the credibility revolution, and the limits of evidence-based policy," Ruhr Economic Papers 1051, RWI - Leibniz-Institut für Wirtschaftsforschung, Ruhr-University Bochum, TU Dortmund University, University of Duisburg-Essen.

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    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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