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https://twitter.com/PsyArXivBot/status/1613870889602359300In early 2013, I was a brand new assistant professor, just into my first tenure track gig. A call for replication studies had come out, which would ultimately become the special issue in Social Psychology (2014), which was the first all #RegisteredReports endeavor.
https://twitter.com/BrianNosek/status/1064550837173796864Heterogeneity describes how much effects being replicated vary from lab to lab, *beyond* sampling error. Sampling error says we expect that by chance, some labs overestimate the true effect size, others underestimate. Heterogeneity says how much more we expect effects to vary.