I have a Second Order Independent Variable (3 Factors to be precise). How to use that for Mediation Analysis using PROCESS by Hayes?

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David L Morgan

It sounds like you need to use a Structural Equation Modeling program such AMOS (which is sold as a separate module in SPSS). But note that if your 3 sub-factors all have similar loadings on the second-order factor, then you can just add them together and you will get the same result as using a fully specified-second order factor.

Edjan Parreño

I think you need to have an observed variable in order to use the PROCESS as tool for mediation analysis.