Statistical Controversies in Psychological Science

One-tailed tests: Let’s do this (responsibly).

“…Given the benefits to power and straightforward hypothesizing, one may wonder why one-tailed tests are not commonplace. Indeed, recently many people have observed, or at least mentioned in passing, that one-tailed tests should be considered and used (Cho & Abe, 2013;Hales, 2016;Hales & Wood, 2022;Hales et al, 2019;Lakens, 2022;Maner, 2014). Despite this, they remain infrequent, apparently even in preregistered research.…”