ltm (0.8-5)

Latent Trait Models under IRT.

http://wiki.r-project.org/rwiki/doku.php?id=packages:cran:ltm
http://cran.r-project.org/web/packages/ltm

Analysis of multivariate dichotomous and polytomous data using latent trait models under the Item Response Theory approach. It includes the Rasch, the Two-Parameter Logistic, the Birnbaum's Three-Parameter, and the Graded Response Models.

Author(s): Dimitris Rizopoulos <dimitris.rizopoulos@med.kuleuven.be>

License: GPL (>= 2)

Uses: msm, mvtnorm, polycor
Reverse depends: difR, GPCMlasso, IMTest, infutil, integIRTy, irtoys, kequate, lordif, pcaPA, PCMRS, PerFit, QVM, subscore
Reverse suggests: catIrt, equateIRT, equateMultiple, latdiag, sirt, VARSEDIG

Released over 11 years ago.