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Hallo,
I run a multilevel MCFA. The data is from a diary study, and the same variable was measured in the morning, and 2 hours later (3 other variables were measured at the second time point). I have 5 factors, but two of them referring to the same items, just different time points.
I keep on getting the "not positive theta matrix" warning, although I have no negative residual variances, or correlations equal or greater than 1. I was wondering what / how could I proceed.
Thank you very much in advance.
WARNING: THE RESIDUAL COVARIANCE MATRIX (THETA) IS NOT POSITIVE DEFINITE.
THIS COULD INDICATE A NEGATIVE VARIANCE/RESIDUAL VARIANCE FOR AN OBSERVED
VARIABLE, A CORRELATION GREATER OR EQUAL TO ONE BETWEEN TWO OBSERVED
VARIABLES, OR A LINEAR DEPENDENCY AMONG MORE THAN TWO OBSERVED VARIABLES.
CHECK THE RESULTS SECTION FOR MORE INFORMATION. |
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Look at the standardized solution and check for residual correlations > 1.
If this doesn't help, send your output to Support along with your license number. |
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