Longitudinal polytomous IRT growth cu... PreviousNext
Mplus Discussion > Growth Modeling of Longitudinal Data >
Message/Author
 Isaac Petersen posted on Friday, June 27, 2014 - 11:55 pm
Is it possible to fit longitudinal IRT growth curves with polytomous items in Mplus? I have a test administered at multiple time points, and would like to examine individuals' growth curves of their ability levels to examine mean-level change over time.

Here's a more thorough description of what I'm looking to do:
https://stats.stackexchange.com/questions/104569/longitudinal-item-response-theory-models-in-r

If this is possible, where can I find exemplar Mplus scripts to fit longitudinal IRT models to examine growth curves?
 Bengt O. Muthen posted on Sunday, June 29, 2014 - 12:59 am
See UG ex6.15.
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