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Mplus Discussion > Growth Modeling of Longitudinal Data >
 Tenelle Porter posted on Wednesday, July 05, 2017 - 1:20 pm
I'm running a latent growth curve model across three time-points.

In estimating the slope and intercept of the latent construct, the model runs without errors, but it looks like there's a problem with the intercept (the mean intercept is zero).

Any idea why the intercept is zero, and how to fix that?

 Linda K. Muthen posted on Wednesday, July 05, 2017 - 1:48 pm
It sounds like you are getting the growth model parameterization where the thresholds are held equal and the mean of the intercept growth factor is fixed at zero. This is an alternative to the thresholds being fixed at zero and the mean of the intercept growth factor being free.
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