mcIRT

Author: Manuel Reif
Contact: https://cran.r-project.org/web/packages/mcIRT
Description: This package provides functions to estimate two popular IRT-models: The Nominal Response Model (Bock 1972) and the quite recently developed Nested Logit Model (Suh & Bolt 2010). These are two models to examine multiple-choice items and other multicategorial response formats. It is possible to estimate multiple group models and to model interaction effects to examine Differential Item Functioning. Each model has a full accessible design matrix which allows the user to manipulate and set up his own weighting scheme and his own constraints. One application could be modeling and testing item properties by means of customizing the design matrix and estimating an explanatory Nominal Response Model or an explanatory Nested Logit Model.
Analyses: Item & Test Analysis
System Requirements: Windows, Mac OS, & Linux
Measurement Model: IRT/Rasch
License Type: Open-Source (R)
Documentation: User manual in pdf