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Latent Difference Score Model
Structural Equation Modeling
posted on Thursday, November 10, 2016 - 3:49 am
in our Survey we have two timestamps (pre- and posttest) and measure in each the economic knowledge by 30 dichotomous items.
We now want to compute the latent difference score between these two timestamps.
Is there any example syntax for a latent difference score model? I cant't find it in the user guide.
Bengt O. Muthen
posted on Thursday, November 10, 2016 - 12:19 pm
I assume you impose measurement invariance over the time points. You can then fix the factor mean at time 1 to zero (this is needed to set the metric of the factor) which means that the factor mean at time 2 expresses the difference.
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