Multidimensional Latent Class Item Response Theory Models

Framework for the Item Response Theory analysis of dichotomous and ordinal polytomous outcomes under the assumption of multidimensionality and discreteness of the latent traits. The fitting algorithms allow for missing responses and for different item parameterizations and are based on the Expectation-Maximization paradigm. Individual covariates affecting the class weights may be included in the new version (since 2.1).


Reference manual

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2.11 by Francesco Bartolucci, 4 years ago

Browse source code at

Authors: Francesco Bartolucci , Silvia Bacci , Michela Gnaldi - University of Perugia (IT)

Documentation:   PDF Manual  

Task views: Psychometric Models and Methods

GPL (>= 2) license

Depends on MASS, limSolve

Imported by LMest.

Depended on by MLCIRTwithin.

See at CRAN