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Bivariate latent growth with latent m... |
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Hello Drs. Muthen, I am trying to run a bivariate latent growth model with a latent interaction between one of the intercepts and another variable that is observed (but have made it latent by fixing the variance @0). For example: z by variable@1; variable@0; Then, I specify a latent interaction that I want to predict to a slope: interact | interceptX XWITH z; slopeY on interact; I correlate the residuals across processes at each time point; however, I get the following error message: THE ESTIMATED COVARIANCE MATRIX COULD NOT BE INVERTED. COMPUTATION COULD NOT BE COMPLETED IN ITERATION 1. CHANGE YOUR MODEL AND/OR STARTING VALUES. Any suggestions to get this model to run? It might be more helpful if I send you all my files. Please let me know and thank you in advance. |
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