irtProb

Author: Gilles Raiche
Contact: https://cran.r-project.org/web/packages/irtProb/index.html
Description: The irtProb R package was mainly developped to compute probability distributions in the context of Item Response Theory (IRT). Actually two families of models are taken into account. The first is the family of 1, 2, 3 and 4 parameters logistic functions. The second is a new multidimensional logistic family adding of 1, 2, 3 and 4 person parameters. Some utilitarian functions are also available. So it is possible to generate response patterns with each family of item response models and other functions are also available to do conversion of item parameters between classical test theory and item response theory (2PL). Maximum likelihood and Maximum a posteriori estimation function of the multidimensional person parameters are also available.
Analyses: Scoring
System Requirements: Any system running R
Measurement Model: IRT/Rasch
License Type: Open-Source (R)
Documentation: A manual and a vignette are available with the pac