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Don't characterize replications as successes or failures

  • Andrew Gelman (a1)

Abstract

No replication is truly direct, and I recommend moving away from the classification of replications as “direct” or “conceptual” to a framework in which we accept that treatment effects vary across conditions. Relatedly, we should stop labeling replications as successes or failures and instead use continuous measures to compare different studies, again using meta-analysis of raw data where possible.

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Gelman, A. (2013) I'm negative on the expression “false positives.” Blog post. Available at: http://andrewgelman.com/2013/11/07/nix-expression-false-positives/.
Gelman, A. (2016b) The time-reversal heuristic – A new way to think about a published finding that is followed up by a large, preregistered replication (in context of Amy Cuddy's claims about power pose). Blog post. Available at: http://andrewgelman.com/2016/01/26/more-power-posing/.
Gelman, A. & Carlin, J. B. (2014) Beyond power calculations: Assessing Type S (sign) and Type M (magnitude) errors. Perspectives on Psychological Science 9:641–51.
McShane, B. B., Gal, D., Gelman, A., Robert, C. & Tackett, J. L. (2017) Abandon statistical significance. Technical report, Northwestern University. Available at: https://arxiv.org/abs/1709.07588.
Schmidt, S. (2009) Shall we really do it again? The powerful concept of replication is neglected in the social sciences. Review of General Psychology 13:90100.
Simmons, J. & Simonsohn, U. (2015) Power posing: Reassessing the evidence behind the most popular TED talk. Blog post. Available at: http://datacolada.org/37.
Tracy, J. L. & Beall, A. T. (2014) The impact of weather on women's tendency to wear red or pink when at high risk for conception. PLoS One 9(2):e88852.

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