Power for Parallel Mediation and Serial Mediation

How to calculate the sample size for a parallel mediation analysis (e.g. Hayes' PROCESS model 4 with two predictors) or a serial mediation analysis (e.g. Hayes' PROCESS model 6).

Arndt Regorz, Dipl. Kfm. & M.Sc. Psychologie, 04/06/2022

Link to the web app for power calculation

Here you can calculate the power for parallel and serial mediation:
Shinyapp power mediation

Video tutorial