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The Need for Power in Psychology

Image of young girl in a cape and mask pretending to be a superhero

By David Nussbaum

Two wonderful blog posts this week that you won’t want to miss if you’re interested in questions of statistical power in personality and social psychology. In the first, Simine Vazire (@siminevazire) argues that sample sizes can’t be too large:

you can’t have too large a sample.  there is no ‘double-edged sword’.  there are no downsides to a large sample.  more evidence is always better, and larger samples = more evidence.