I am trying to do a CFA with and 2nd order factor, but am getting an error. Here is the syntax that i am using:
Model: f1 BY y1 -y4; f2 BY y5 -y8; f3 BY y9-y12; f4 BY y13-16; f5 BY y17-20; f6 BY y21-24; f7 BY f1 f2 f3;
If I set two of the three factors in f7 to 1, the model runs without error; however, if only one loading in the second-level variable is set to 1, i receive the following 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 F2.
When I check F2, the b/c the higher order factor's estimated correlation with one of the level-1 factors is greater than zero. Can you help?