Hi, I'm attempting to run a second order CFA to specify a latent variable I want to use as a mediator in a simple mediation model. I have the following error message:
"WARNING: THE LATENT VARIABLE COVARIANCE MATRIX (PSI) IS NOT POSITIVE DEFINITE. THIS COULD INDICATE A NEGATIVE VARIANCE/RESIDUAL VARIANCE FOR A LATENT VARIABLE, A CORRELATION GREATER OR EQUAL TO ONE BETWEEN TWO LATENT VARIABLES, OR A LINEAR DEPENDENCY AMONG MORE THAN TWO LATENT VARIABLES. CHECK THE TECH4 OUTPUT FOR MORE INFORMATION. PROBLEM INVOLVING VARIABLE F1."
I notice that the STDYX factor loading for my F1 to my second order factor FC is over 1 (1.095 to be exact). Can someone please assist me in understanding what is going wrong with my model. Thanks!