Warning message: latent variable cova... PreviousNext
Mplus Discussion > Structural Equation Modeling >
Message/Author
 Megan McVay posted on Wednesday, July 26, 2017 - 10:27 am
We're trying to run this model with a categorical mediator and getting the following error message. We were not able to find anything useful in looking at Tech4 output.

Any insights are appreciated!

________________________

categorical = sspacat26n;

MODEL:

wtkg56n on wtkg0n randn sspacat26n;
sspacat26n on randn sspacat0n;

randn with sspacat0n wtkg0n;
wtkg0n with sspacat0n;

model indirect:
wtkg56n ind randn;


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 WTKG56N.
 Linda K. Muthen posted on Wednesday, July 26, 2017 - 11:22 am
You need to look at the TECH4 output or send the output with TECH4 and your license number to support@statmodel.com.
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