Between-group Interaction PreviousNext
Mplus Discussion > Multilevel Data/Complex Sample >
 Student 09 posted on Friday, March 30, 2012 - 12:08 am

I would like to model an interaction of two continuous between-group variables xm_1 and xm_2.

Using the define-command, I create a mulitplicative interaction term and insert it on the between-level.

However, both xm_1 and xm_2 are aggregate variables of variables x_1 and x_2 measured at the within-level.

My question is whether I need to model the interaction of x_1 and x_2 on the within-level as well in order to get an appropriate parameter and S.E. for the between-group interaction my theoretical interest focuses on - what would you suggest? Many thanks for your answer!
 Linda K. Muthen posted on Friday, March 30, 2012 - 8:59 am
Putting this on between only is fine.
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