Hi there,

I am testing a structural model with 3 IVs, 1 mediating variable and 3 DVs. In addition, I want to investigate the effect of 1 moderator on the relationship between the mediating variable and the 3 DVs. I also want include three control variables into the model. All 11 constructs are measured by multiple items on a 7-point Likert scale.

When testing for multicollinearity by means of the correlation matrix and variance inflation factors (VIF), do I only have to examine the 3 IVs or also the correlation between additional variables, such as the mediating, moderating and control variables?

Thank you very much in advance!