Psychometric Mixture Models
Finite Mixtures of Bradley-Terry Models
Class "btmix"
Methods for btmix Objects
Effects Displays for Concomitant Variables in Finite Mixture Models
Finite Mixtures of Multinomial Processing Tree Models
Class "mptmix"
Finite Mixtures of Rasch Models
Class "raschmix"
Methods for raschmix Objects
Profile Plot of Item Parameters
Simulate Data from Rasch Mixture Models
Psychometric mixture models based on 'flexmix' infrastructure. At the moment Rasch mixture models with different parameterizations of the score distribution (saturated vs. mean/variance specification), Bradley-Terry mixture models, and MPT mixture models are implemented. These mixture models can be estimated with or without concomitant variables. See Frick et al. (2012) <doi:10.18637/jss.v048.i07> and Frick et al. (2015) <doi:10.1177/0013164414536183> for details on the Rasch mixture models.