4 ms·
Post-hoc power assessments? c'mon e.g. Hoenig & Heisey (2001) provide evidence that several different approaches for calculating post-hoc power are flawed and c
by SubiculumCode 10y ago
Post-hoc power assessments? c'mon e.g. Hoenig & Heisey (2001) provide evidence that several different approaches for calculating post-hoc power are flawed and can produce misleading conclusions. Once a confidence interval has been computed, there is no additional information that a post hoc power calculation can provide.
Nevertheless cog neuroscience has had a bad habit of using small samples, sample sizes that developmental cognitive neuroscientists have criticized.
- mattkrause 10y agoHoenig & Heisey (2001) discuss computing power after finding non-significant results. This is a bit different from the current paper, which also looks at the power for significant findings. (The conclusion here being that studies are so underpowered that they should be finding a lot fewer significant effects).
- SubiculumCode 10y agopost hoc power calculations are inappropriate as they merely restate the p-value in a different form. No new information is gained.