I want to test a multi-stage path model (e.g., A predicts B, B predicts C, C predicts D) where all of my variables are individual observations nested within groups. So far I've been doing this through multiple unique multilevel analysis in R.
I would prefer to use a technique like SEM that lets me test multiple paths at the same time (A -> B -> C -> D) and still properly handle the 2-levels (individuals in groups).
I understand that MPLUS can handle this. Is there an R package I can use?