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Author: Leif and Uri

[27] Thirty-somethings are Shrinking and Other U-Shaped Challenges

Posted on September 17, 2014February 11, 2020 by Leif and Uri

A recent Psych Science (.pdf) paper found that sports teams can perform worse when they have too much talent. For example, in Study 3 they found that NBA teams with a higher percentage of talented players win more games, but that teams with the highest levels of talented players win fewer games. The hypothesis is easy enough…

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[21] Fake-Data Colada: Excessive Linearity

Posted on May 8, 2014February 11, 2020 by Leif and Uri

Recently, a psychology paper (.html) was flagged as possibly fraudulent based on statistical analyses (.pdf). The author defended his paper (.html), but the university committee investigating misconduct concluded it had occurred (.pdf). In this post we present new and more intuitive versions of the analyses that flagged the paper as possibly fraudulent. We then rule…

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Recent Posts

  • [108] MRAN is Dead, long live GRAN
  • [107] Meaningless Means #3: The Truth About Lies
  • [106] Meaningless Means #2: The Average Effect of Nudging in Academic Publications is 8.7%
  • [105] Meaningless Means #1: The Average Effect
    of Nudging Is d = .43
  • [104] Meaningless Means: Some Fundamental Problems With Meta-Analytic Averages

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    © 2021, Uri Simonsohn, Leif Nelson, and Joseph Simmons. For permission to reprint individual blog posts on DataColada please contact us via email..