Model comparison for invariance testing
I'm conducting invariance testing using SEM in JASP. I'm using the robust MLR estimator. As far as I can tell, I cannot compare models using by adding model 2, etc (as any change I make to one model seems to replicate in the other models. . . instead of being independent from the other models).
That's fine. I can just duplicate the model and add constraints. But, I would like to compare the fit of the models using the Santora-Bentler chi-square. However, the formula for doing so requires knowing the scaling factor - which JASP doesn't seem to produce.
I'm relatively new to JASP so I may be missing something. Thanks in advance for any suggestions!