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 Chantal Hermann posted on Thursday, January 24, 2013 - 7:25 am
Hello,

Could you please tell me if it is possible to test an interaction between a latent variable (based on continuous indicators) and an observed variable that is categorical (0 = condition not present, 1= condition present)in SEM?
Both the continuous latent variable and observed categorical variable are exogenous (not predicted by other variables). If so what is the best way to go about this?
I was thinking I would use the MLR estimator.

Also, do I specify the categorical indicator as categorical in my syntax?

I have a medium sized sample of about 350 participants.

Thank you for your help!
 Linda K. Muthen posted on Thursday, January 24, 2013 - 7:39 am
You would use the XWITH option. You would not put the binary covariates on the CATEGORICAL list. This list is for dependent variables only.
 Chantal Hermann posted on Thursday, January 24, 2013 - 7:46 am
Hi Linda,

Great, thank-you. So can I use the following analysis syntax:

ANALYSIS: ESTIMATOR = MLR;
TYPE = RANDOM;
ALGORITHM = INTEGRATION;

Thank you for your help!
 Linda K. Muthen posted on Thursday, January 24, 2013 - 11:52 am
Yes.
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