Moderation and mediation with PROCESS
The difference between a moderator and a mediator, with a diagram for each and a study where each is the right question.
Slides · Dataset
About 40 minutes to complete
Enrol to open the slides and download the data.
What this module covers
the difference between a moderator and a mediator, with a diagram for each and a study where each is the right question; why the old Baron and Kenny steps have been superseded; installing and running the PROCESS macro; Model 1 for moderation and Model 4 for mediation; mean-centring and interaction terms; bootstrapped confidence intervals for the indirect effect, and why bootstrap rather than Sobel; simple slopes and the Johnson-Neyman region; reading PROCESS output, which is text and not a pivot table; APA reporting for both.
By the end of it
- The difference between a moderator and a mediator, with a diagram for each and a study where each is the right question
- Why the old Baron and Kenny steps have been superseded
- Installing and running the PROCESS macro
- Model 1 for moderation and Model 4 for mediation
- Mean-centring and interaction terms
- Bootstrapped confidence intervals for the indirect effect, and why bootstrap rather than Sobel
- Simple slopes and the Johnson-Neyman region
- Reading PROCESS output, which is text and not a pivot table
- APA reporting for both
The dataset
Counselling, medication knowledge and adherence — Sigma teaching dataset
A teaching dataset of 380 cases, generated from a fixed seed so every figure in the module reproduces exactly.
- CodebookIncluded
- Dataset (CSV)Included
- SPSS syntaxIncluded