Lea Höltge posted on Friday, June 03, 2016 - 8:58 am
Dear Prof Muthen,
I have run a CFA with six factors - 3-4 indicators for each factor. I get 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.
However, I don´t have any negative variances or residual variances nor correlations equal or greater than one. I don´t really understand what the linear dependency means. Some of my factors are highly correlated (over .9). Can that be the reason? Is there anything I can do about it?