Thank you in advance for your help. I am running my first growth model and I think I found everything I need in the codebook, but I want to have demographic interactions. What is the code for that? I found covariates, but not interactions.
1.First when doing a quadratic growth model with parallel constructs, what should the correlations between I s q look like in. In a parallel linear function it looks like this: s1 ON i2; s2 ON i1; What does this look like when q is added in?
2. I keep getting this error message: THE STANDARD ERRORS OF THE MODEL PARAMETER ESTIMATES COULD NOT BE COMPUTED. THE MODEL MAY NOT BE IDENTIFIED. CHECK YOUR MODEL. PROBLEM INVOLVING PARAMETER 25. Can you guide me on how to solve this so I can get interpretable results?