Error when centering in multigroup model PreviousNext
Mplus Discussion > Structural Equation Modeling >
 Jen posted on Saturday, November 15, 2014 - 12:32 pm

Hope you are well. I have a basic multigroup growth model. I am adding a few covariates (that I'll regress i s & q on). This model converges and fits very well when I do not center. I would ideally like to center the covariates to aid in the interpretation of i, s, and q (specifically, I would like to say if there is a significant slope and quadratic in each group at the mean of all covariates). However, when I center any of the covariates (or all of them), suddenly there are many "NaN" values in my output (for the Loglikelihood, AIC, BIC, and many coefficients). Is there a reason I should expect this in the multigroup context?

Thanks much,
 Bengt O. Muthen posted on Saturday, November 15, 2014 - 2:34 pm
No. Please send input, output, data, and license number to Support.
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