

Error Message  non convergence in MSEM 

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Hello. I am getting the following error messages (where SUPPS represents a L2 variable). Is this because I don't have any between level variance? I was wondering how you recommend that I proceed? I am trying to test a 1(11)1 and a 2(11)1. I attempted to do this with latent variables and observed variables and got the same error message. THE ESTIMATED WITHIN COVARIANCE MATRIX IS NOT POSITIVE DEFINITE AS IT SHOULD BE. COMPUTATION COULD NOT BE COMPLETED. THE VARIANCE OF SUPPS APPROACHES 0. FIX THIS VARIANCE AND THE CORRESPONDING COVARIANCES TO 0, DECREASE THE MINIMUM VARIANCE, OR SPECIFY THE VARIABLE AS A BETWEEN VARIABLE. THE MODEL ESTIMATION DID NOT TERMINATE NORMALLY DUE TO AN ERROR IN THE COMPUTATION. CHANGE YOUR MODEL AND/OR STARTING VALUES. A MATRIX COULD NOT BE INVERTED DURING THE H1 MODEL ESTIMATION. THE ESTIMATED WITHIN COVARIANCE MATRIX IS NOT POSITIVE DEFINITE AS IT SHOULD BE. COMPUTATION COULD NOT BE COMPLETED. THE VARIANCE OF SUPPS APPROACHES 0. FIX THIS VARIANCE AND THE CORRESPONDING COVARIANCES TO 0, DECREASE THE MINIMUM VARIANCE, OR SPECIFY THE VARIABLE AS A BETWEEN VARIABLE. THE H1 MODEL ESTIMATION DID NOT CONVERGE. CHISQUARE TEST AND SAMPLE STATISTICS COULD NOT BE COMPUTED. 


As a follow up to the above, I remembered that I needed to specify SUPPS as a between variable. So after specifying that Between = SUPPS; The model ran, and I got output in addition to the following error message: THE MODEL ESTIMATION DID NOT TERMINATE NORMALLY DUE TO A CHANGE IN THE LOGLIKELIHOOD DURING THE LAST E STEP. AN INSUFFICENT NUMBER OF E STEP ITERATIONS MAY HAVE BEEN USED. INCREASE THE NUMBER OF MITERATIONS OR INCREASE THE MCONVERGENCE VALUE. ESTIMATES CANNOT BE TRUSTED. SLOW CONVERGENCE DUE TO PARAMETER 12. THE LOGLIKELIHOOD DERIVATIVE FOR THIS PARAMETER IS 0.46693364D+00. How should I proceed with this new error message (note that I no longer receive the "not positive definite" error!). Thanks so much! 


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