The Mplus Base Program and Combination Add-On contains all of the features of the Mplus Base Program and the Mixture and Multilevel Add-Ons. In addition, it includes models that handle both clustered data and latent classes in the same model, for example, two-level latent class analysis and multilevel growth mixture modeling. Other special features include missing data estimation, sampling weights, latent variable interactions and non-linear factor analysis using maximum likelihood, random slopes, individually-varying times of observation, non-linear parameter constraints, maximum likelihood estimation for all outcomes types, Monte Carlo simulation facilities, and a post-processing graphics module.

Proof of current student status and a signed Student License Addendum must be mailed or faxed before the order can be processed. The PDF format of these documents can also be emailed to Mplus Sales. An Mplus Single-User Student License cannot be purchased by an institution.