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Dear Bengt and Linda Muthen, I have some convergence problem. I think I should use some starting values. I know, how to do this technically with Mplus, but I do not know which specific value I should define for parameter 29 (see above). Can you give me some advices how I get the right value? Is there a general rule? I get following message: THE STANDARD ERRORS OF THE MODEL PARAMETER ESTIMATES MAY NOT BE TRUSTWORTHY FOR SOME PARAMETERS DUE TO A NONPOSITIVE DEFINITE FIRSTORDER DERIVATIVE PRODUCT MATRIX. THIS MAY BE DUE TO THE STARTING VALUES BUT MAY ALSO BE AN INDICATION OF MODEL NONIDENTIFICATION. THE CONDITION NUMBER IS 0.306D17. PROBLEM INVOLVING PARAMETER 29. Thanks for your answer! Giannis 


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