ETIRM

Author: B. A. Hanson
Contact: http://www.openirt.com/b-a-h/software/cpp/etirm.html
Description: ETIRM is a set of C++ classes and functions that can be used in programs for estimating parameters of item response theory (IRT) models. Currently, the components of ETIRM can be used to compute parameter estimates for the three-parameter logistic model with multiple groups (multiple-group estimation). There are plans to add estimation of other IRT models to ETIRM, including models for polytomous items. ETIRM is distributed under the BSD License.
Analyses: Dimensionality; Factor/Latent Structure
System Requirements: Programs using ETIRM have been successfully compil
Measurement Model: IRT/Rasch
License Type: Open-Source
Documentation: Some documentation of the numerical algorithms use