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A question about the univariate approach |
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anonymous Z posted on Wednesday, June 21, 2017 - 8:16 am
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Dear Dr. Muthens, I am using both multivariate (wide format data) and univariate approach (long format data) to model longitudinal data (e.g., y1, y2, and y3). With multivariate approach, we call the modeling as latent growth curve modeling because the intercept and slope factors are latent factors. In contrast, with univariate approach, the variance of slope is fixed at zero and residual variance of “y” across time are hold equal. In this case, can we call univariate modeling as “latent growth curve modeling” or should it be just “growth modeling?” Thanks so much! |
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The two-level approach to growth modeling is shown in the UG as ex9.16. The random intercept and random slope can be called growth factors. |
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