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Hello,
I am running a 7-factor model using MLR in MGCFA comparing two groups (random order and standard order) on a 20-item measure. When I run the model, I receive the following warning message:
WARNING: THE LATENT VARIABLE COVARIANCE MATRIX (PSI) IN GROUP RANDOM
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 EB.
I believe this might be a problem with the random order group because when I run the 7-factor model in the standard order group using CFA, I do not receive the error. However, when I run the 7-factor model in the random order group using CFA, I do receive the error message. Additionally, I checked all models for negative residuals, and there are none.
Your suggestions are much appreciated! Thank you! |
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Look at TECH4 to see if you have
A CORRELATION GREATER OR EQUAL
TO ONE BETWEEN TWO LATENT VARIABLES, OR A LINEAR DEPENDENCY AMONG MORE
THAN TWO LATENT VARIABLES. |
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