1. Growth Mixture Modeling in R
July 07, 2015

2. A Motivating Example

4. What approaches are available?
Linear regression?
Polynomial linear regression?
Other ideas?

5. What is gmm?

6. SEM

7. Latent Class Growth Model

8. What is mixture-modeling?

9. Growth Mixture Model

12. Two methods of implementing GMM in R#
install.packages(‘OpenMx’) #
install.packages(‘lcmm’)

13. OpenMx OpenMx allows considerable freedom..
-> Procedural vs. object-oriented styles.
-> Equivalent models with different scripts.

14. lcmm lcmm is more limited, but..
-> Follows a more familiar syntax for specifying models in R
-> Automatic plotting of outputs

15. Some references
plotting longitudinal data getting classifications out of OpenMx

16. Nonparametric approach#
install.packages(‘kml’) #
install.packaged(‘kml3d’)