Leif and Uri, Author at Data Colada

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

Posted on September 17, 2014January 23, 2019 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…

[21] Fake-Data Colada: Excessive Linearity

Posted on May 8, 2014January 4, 2019 by Leif and Uri

Recently, a psychology paper (.pdf) 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…