I am trying to fit a 2nd order CFA using 6 observed categorical variables, as follows:
Fa by cogquin fevquin1 quingrip; Fb by srh adlbin chronicbin; health by Fa Fb;
The output gives the following message
THE STANDARD ERRORS OF THE MODEL PARAMETER ESTIMATES COULD NOT BE COMPUTED. THE MODEL MAY NOT BE IDENTIFIED. CHECK YOUR MODEL. PROBLEM INVOLVING PARAMETER 32. THE CONDITION NUMBER IS 0.655D-17.
On checking parameter 32 is the PSI between health and health ( which I think must be related to the variance of latent variable health). I have also tried fixing the variance of the latent variables to 1, which did not help either.
I can't understand why this model is not identified, and don't know how to solve it to fit the model. Can you suggest anything?