CDM: Cognitive Diagnosis Modeling

Functions for cognitive diagnosis modeling and multidimensional item response modeling for dichotomous and polytomous item responses. This package enables the estimation of the DINA and DINO model (Junker & Sijtsma, 2001, <doi:10.1177/01466210122032064>), the multiple group (polytomous) GDINA model (de la Torre, 2011, <doi:10.1007/s11336-011-9207-7>), the multiple choice DINA model (de la Torre, 2009, <doi:10.1177/0146621608320523>), the general diagnostic model (GDM; von Davier, 2008, <doi:10.1348/000711007X193957>), the structured latent class model (SLCA; Formann, 1992, <doi:10.1080/01621459.1992.10475229>) and regularized latent class analysis (Chen, Li, Liu, & Ying, 2017, <doi:10.1007/s11336-016-9545-6>). See George, Robitzsch, Kiefer, Gross, and Uenlue (2017) <doi:10.18637/jss.v074.i02> for further details on estimation and the package structure. For tutorials on how to use the CDM package see George and Robitzsch (2015, <doi:10.20982/tqmp.11.3.p189>) as well as Ravand and Robitzsch (2015).

Version: 6.1-10
Depends: R (≥ 3.1), mvtnorm
Imports: graphics, grDevices, MASS, methods, polycor, Rcpp, sfsmisc, stats, utils
LinkingTo: Rcpp, RcppArmadillo
Suggests: BIFIEsurvey, GDINA, lattice, miceadds, mirt, sirt, TAM
Published: 2018-02-26
Author: Alexander Robitzsch [aut, cre], Thomas Kiefer [aut], Ann Cathrice George [aut], Ali Uenlue [aut]
Maintainer: Alexander Robitzsch <robitzsch at>
License: GPL-2 | GPL-3 [expanded from: GPL (≥ 2)]
NeedsCompilation: yes
Citation: CDM citation info
Materials: README NEWS
In views: Psychometrics
CRAN checks: CDM results


Reference manual: CDM.pdf
Package source: CDM_6.1-10.tar.gz
Windows binaries: r-devel:, r-release:, r-oldrel:
OS X El Capitan binaries: r-release: CDM_6.1-10.tgz
OS X Mavericks binaries: r-oldrel: CDM_6.0-101.tgz
Old sources: CDM archive

Reverse dependencies:

Reverse depends: TAM
Reverse imports: dcminfo, immer, LAM, mdmb, miceadds, sirt, STARTS
Reverse suggests: GDINA


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