A lightweight R package providing Stan models for JASP's Item Response Theory module, which are compiled during package installation.
- dichotomous.stan: Implements Rasch (1-parameter logistic) model, 2-parameter logistic model, 3-parameter logistic model, and 4-parameter logistic model.
- polytomous.stan: Implements (generalized) partial credit model, (generalized) rating scale model, graded response model, and nominal response model.