I am testing a SEM with 2 DVs, 2 mediators, and 8 IVs composed of 59 categorical observed variables.
I receive the error below: 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 WSAT."
I've checked TECH4 and the residual is WSAT=-0.123.
WSAT is one of DVs. What should I do to solve this problem?