Power Mediation Analysis
Calculating the sample size needed for a mediation analysis with G*Power and with simulation results
Arndt Regorz, Dipl. Kfm. & M.Sc. Psychologie, 11/28/2020
If you want to run a mediation analysis you want to know how large your sample size will have to be to finde an indirect effect. This video tutorial shows you how to do that.
Content
1. Video tutorial
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2. References
Erdfelder, E., Faul, F., & Buchner, A. (1996). GPOWER: A general power analysis program. Behavior research methods, instruments, & computers, 28(1), 1-11. https://link.springer.com/content/pdf/10.3758/BF03203630.pdf
Fritz, M. S., & MacKinnon, D. P. (2007). Required sample size to detect the mediated effect. Psychological science, 18(3), 233-239. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2843527/
Heinrich-Heine Universität Düsseldorf. (n.d.). G*Power [Computer software]. https://www.psychologie.hhu.de/arbeitsgruppen/allgemeine-psychologie-und-arbeitspsychologie/gpower.html