where "level" and "trend" are latent growth factors for the first process and "i" and "s" are latent growth factors for the second process. I want to create a new latent variable that is the difference of the two latent growth factors "level" and "i".
Mplus reports that this is a syntax error "Unable to expand variable list: I - LEVEL"
The interaction of two latent variables can be generated using the "xwith" statement, but I could not find how to get the difference between two latent variable .
Dear Mplus team, I have two personality traits (2 latent variable A B) and I want to generate 2 new latent variable that indicate the difference between these two variables(A-B and B-A). The difference should indicate how much one personality trait is higher than the other on each participant. Do you have any suggestion on the script?