Can you tell me how to test the effects of a moderator variable using SPSS?
Suzanne Meulendijks.
Suzanne:
My understanding is that moderation is essentially an interaction
effect. Those are easy enough to specify regardless of whether the
variables involved are categorical, continuous, or both. The overall
interaction would probably need to be followed up with tests of simple
main effects or simple slopes.
HTH,
Chuck Cleland