False positives are something we often need to think about when making inferences, but not everyone is aware that the probability of getting a false positive skyrockets as more comparisons are made. In this blog post, I discuss the problem of false positives and multiplicity and common ways to correct for multiplicity.
fMRIs are powerful devices that can give neuroscientists a lot of insight into how the brain works and how the brain is involved in human behavior. However, the fMRI can easily lead researchers astray when used improperly. In this blog post, I examine a study an exploratory fMRI study that tried to demonstrate an ancient Chinese theory of depression.
Meta-analyses are widely used to summarize and examine treatment effects. However, few researchers examine the relationship between power and meta-analyses. In this post, I discuss power conceptually and mathematically. Then I explain how different models impact power and the problems with under-powered meta-analyses.