MPLUS error message PreviousNext
Mplus Discussion > Confirmatory Factor Analysis >
Message/Author
 brendadooley posted on Sunday, May 06, 2012 - 8:26 am
Linda

I received the following MPLUS warning
THE MODEL ESTIMATION DID NOT TERMINATE NORMALLY DUE TO AN ILL-CONDITIONED
FISHER INFORMATION MATRIX. CHANGE YOUR MODEL AND/OR STARTING VALUES.

THE MODEL ESTIMATION DID NOT TERMINATE NORMALLY DUE TO A NON-POSITIVE
DEFINITE FISHER INFORMATION MATRIX. THIS MAY BE DUE TO THE STARTING VALUES
BUT MAY ALSO BE AN INDICATION OF MODEL NONIDENTIFICATION. THE CONDITION
NUMBER IS -0.144D-19.

THE STANDARD ERRORS OF THE MODEL PARAMETER ESTIMATES COULD NOT BE
COMPUTED. THIS IS OFTEN DUE TO THE STARTING VALUES BUT MAY ALSO BE
AN INDICATION OF MODEL NONIDENTIFICATION. CHANGE YOUR MODEL AND/OR
STARTING VALUES. PROBLEM INVOLVING PARAMETER 28.

What can I do to fix this?
 Linda K. Muthen posted on Sunday, May 06, 2012 - 8:53 am
Please send the output and your license number to support@statmodel.com.
 brenda posted on Tuesday, May 08, 2012 - 2:35 am
Linda

I have tried to set the residual variance using RF60t1@0; The residual variance is set to zero in output once the code is re ran. However the same message comes back involving parametre 28

I assume that the parametre number is found under tech 1 - parametre specification for between. The residual variance for this parametre is .008 before it was set to zero

Thanks
 Linda K. Muthen posted on Tuesday, May 08, 2012 - 5:53 am
Please send the output and your license number to support@statmodel.com.
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