I'm conducting multigroup comparisons in a model where I have two multiple indicator growth curves and some other variables. In this model, some variables predict the change/slope factors through the level factors, and I would need to test whether these effects differ by gender. When I run the whole model by gender, and specify path constraints under the 'Model indirect' command, these do not influence the dfs of Chi-square value of the model (i.e., the traditional multigroup comparisons do not appear to work) - how does one conduct gender difference testing of such indirect effects in Mplus?
Thank you Linda, this is what I aim to do. I tried the 'model constrained' but it didn't work (the error message: 'Unknown parameter label in model constraint', although I did specify the label before this). In the syntax, I first have all the directional paths in the model, then I have the 'model indirect' command under which I specify the indirect effects, and finally, I have the 'model constraint' command. There's just probably something in this syntax that I don't get..Could you tell/show me what the syntax should look like? Also, is it enough to give the parameter label and a constrain to it under the 'Model Constraint'?