Dear Mplus support, I estimated a longitudinal factor analysis where my latent variable SAD is measured with 3 observed variables (lung1, lung2, lung3) at 3 different timepoints (see the code below).
I would like to perform a mixture model where for each SAD1, SAD2, SAD3 I would like to link a categorical variable C1 (for SAD1), C2 and C3 (in order to obtain 3 clustering at 3 timepoints based on SAD latent variables). How can I do it in the MODEL statement?
Take a look at UG ex 8.7. Although this refers to a growth model, your factor model is similar enough. The different classes can have different factor means if you add measurement invariance with respect to the intercepts of the factor indicators.