Hi

I'm running a multilevel CFA  to check the validity of my scale. The scale has three factors and each factor has 6 items.

When I wanted to check the L2 (or between) part of my model, I aggregated each item for each class. Therefore, my model sounds like this: 

%within%

MSTw BY SMst1 SMst2 SMst3 SMst4 SMst5 SMst6; !latent variable Mastery (within)

PERAPPw BY SPerApp1 SPerApp2 SPerApp3 SPerApp4 SPerApp5 SPerApp6; !latent variable performance approach goals (within)

PERAVOw BY SPerAvo1 SPerAvo2 SPerAvo3 SPerAvo4 SPerAvo5 SPerAvo6; !latent variable performance avoidance goals (within)

%between%

MSTb BY Mst1m Mst2m Mst3m Mst4m Mst5m Mst6m; !latent variable Mastery (between)

PERAPPb BY PerApp1m PerApp2m PerApp3m PerApp4m PerApp5m PerApp6m; !latent variable performance approach goals (between)

PERAVOb BY PerAvo1m PerAvo2m PerAvo3m PerAvo4m PerAvo5m PerAvo6m; !latent variable performance avoidance goals (between)

I wonder my approach is correct?

Thanks.

Hassan