Contents
How does moderated mediation work?
Moderated mediation: A moderator variable alters the strength of the relationship between two other variables, i.e. the predictor and the outcome variable. In a mediator model, this relationship may be the indirect effect or mediator effect.
What is the sample size needed for moderated mediation?
Sample sizes larger than 30 and less than 500 are appropriate for most research. 2. Where samples are to be broken into subsamples; (male/females, juniors/seniors, etc.), a minimum sample size of 30 for each category is necessary.
Is age a mediator or moderator?
Age might be a moderator variable, in that the relation between SES and BSE could be stronger for older women and less strong or nonexistent for younger women. Education might be a mediator variable in that it explains why there is a relation between SES and BSE.
How is the effect of a mediator moderated?
Moderated mediation tests the influence of a fourth (or more) variable on the mediated relationship between X and Y The effect of the mediator is moderated by another variable X -> M -> Y (depending on Z) The moderation can occur on any and all paths in the mediation model (e.g., a path, b path, c path, or any combination of the three)
How is the hypothesised moderated mediation model tested?
Tests of conditional indirect effects. The hypothesised moderated mediation model was tested using the PROCESS macro model number 7, which tests a model whereby need for cognition moderates the effect of path a (Figure 1; Hayes, 2013).
Can you test moderation on a, B, C pathways?
Preacher, Rucker, & Hayes (2007) argue you can test the moderation on a, b, c’ pathways directly and that should be theorized moderation based on where you theorize it to be.
Is it legitimate to conclude that M mediates the association between X and Y?
Yes, it is legitimate to conclude that M mediates the association between X and Y even if the total effect ( c) is not significant.