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Error message involving parameter # |
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I am running 3 reciprocal effects models and have 4 waves of data. Each model is based on 2 of 4 groups. My first model (syntax in next post; 643 cases) includes groups 1 and 3; the second (460 cases), groups 2 and 3; and the third (1101 cases), groups 3 and 4. My MODEL syntax is is similar for all 3 models. With my first 2 models (but not the third), I get the following error message: THE MODEL ESTIMATION TERMINATED NORMALLY THE STANDARD ERRORS OF THE MODEL PARAMETER ESTIMATES MAY NOT BE TRUSTWORTHY FOR SOME PARAMETERS DUE TO A NON-POSITIVE DEFINITE FIRST-ORDER DERIVATIVE PRODUCT MATRIX. THIS MAY BE DUE TO THE STARTING VALUES BUT MAY ALSO BE AN INDICATION OF MODEL NONIDENTIFICATION. THE CONDITION NUMBER IS 0.100D-10. PROBLEM INVOLVING PARAMETER 265. The parameter is not always the same. Can you please advise me where I’m going wrong? |
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This is the syntax referred to in the previous post. (Structural component not included & only 2 time waves shown) RvHac on MasVog MasVAng SES; MSCT1 on RvHac MasVog MasVAng SES; MSCT1 with MACHT1; MACHT1 on RvHac MasVog MasVAng SES; MSCT2 on MSCT1 RvHac MACHT1 MasVog MasVAng SES; MSCT2 with MACHT2; MACHT2 on RvHac MACHT1 MSCT1 MasVog MasVAng SES; Where: RvHac = the group contrast variable (the USEOBSERVATONS command also used) MasVog and MasVAng = 2 culture variables operationalised using 2 contrasts SES = continuous variable MSCT1, MSCT2 = math self-concept times 1 and 2 MACHT1, MACHT2 = math achievement times 1 and 2. |
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Please send the relevant outputs and your license number to support@statmodel.com. Please keep your posts to one window. |
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