We are attempting to expand upon the mover-stayer model (see ex. 8.14 in the MPLUS user's guide).
Here are the specifics: We have a variable measured at four points in time and the variable has three categories. We hypothesize three latent classes for each time point and two latent transition chains.
The problem we are running into deals with assumptions. What is the logic behind fixing the logit intercepts (@10 and -10?) and how can it be extended to more than two time points?
We're also not sure to specify constraints in the mover chain of the measurement portion of the model. A specific problem is that we are getting the following error "ordered thresholds for class x and y for indicator z are not increasing"