Covariance in two-level interaction PreviousNext
Mplus Discussion > Multilevel Data/Complex Sample >
 Lieke ten Brummelhuis posted on Wednesday, October 30, 2013 - 2:37 pm

I am working with diary data (days nested in persons) and I estimate a two-level interaction model. I wondered if I should include the covariance between the product term and the components as well. Thus, that would be for instance:
y ON x m xm;
xm WITH x m;

Thank you for your response.

Lieke ten Brummelhuis
 Bengt O. Muthen posted on Wednesday, October 30, 2013 - 8:40 pm
x, m, xm are covariates so they are automatically correlated; don't mention WITH.
 Lieke ten Brummelhuis posted on Thursday, October 31, 2013 - 8:00 am
Thank you for your quick reply. I actually ran into another problem. Is there an easy way to calculate cross products from group-mean centered variables? I read some of the previous discussions and they suggested to first GMC the data, save it and then calculate the cross-product using a define command. Is there a new way in the latest Mplus version to do this at once?

Thank you!
 Linda K. Muthen posted on Friday, November 01, 2013 - 7:09 am
There is not available in Version 7.1. It will be available in Version 7.2.
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