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Required Sample Size to Detect the Mediated Effect

Matthew S. Fritz,D. Mackinnon

2007 · DOI: 10.1111/j.1467-9280.2007.01882.x
Psychology Science · 4,660 Citations

TLDR

The necessary sample sizes for six of the most common and the most recommended tests of mediation for various combinations of parameters are presented to provide a guide for researchers when designing studies or applying for grants.