CDM: Cognitive Diagnosis Modeling

Functions for cognitive diagnosis modeling and multidimensional item response modeling for dichotomous and polytomous data. This package enables the estimation of the DINA and DINO model, the multiple group (polytomous) GDINA model, the multiple choice DINA model and the general diagnostic model (GDM) which contains the multidimensional linear compensatory item response model as a special case.

Version: 3.1-14
Depends: R (≥ 2.15.0), mvtnorm
Imports: MASS, psych, polycor, sfsmisc, Rcpp (≥ 0.11)
LinkingTo: Rcpp, RcppArmadillo
Suggests: sirt, TAM, NPCD, ACTCD, pks
Published: 2014-03-21
Author: Alexander Robitzsch [aut, cre], Thomas Kiefer [aut], Ann Cathrice George [aut], Ali Uenlue [aut]
Maintainer: Alexander Robitzsch <a.robitzsch at>
License: GPL-2 | GPL-3 [expanded from: GPL (≥ 2)]
NeedsCompilation: yes
Materials: NEWS
In views: Psychometrics
CRAN checks: CDM results


Reference manual: CDM.pdf
Package source: CDM_3.1-14.tar.gz
MacOS X binary: CDM_3.1-14.tgz
Windows binary:
Old sources: CDM archive

Reverse dependencies:

Reverse imports: sirt
Reverse suggests: TAM