EQSIRT

Author: Eric Wu and Peter Bentler; Patrick Mair and Steven Reise
Contact: http://www.mvsoft.com/eqsirt10.htm
Description: EQSIRT - a comprehensive Item Response Theory computer program - was developed with funding by the U.S. National Cancer Institute through a Small Business Innovation Research (SBIR) grant motivated by NIH's Patient Reported Outcomes (PROMIS) initiative. Authors and contributors: EQSIRT was designed by Eric Wu and Peter Bentler, who developed EQS, a popular structural equations modeling program. It was developed with IRT experts Patrick Mair and Steven Reise. Coherent and creative statistical programming was directed by Sam He, and complex interfaces were directed by Guisuo Guo. EQSIRT has a complete model builder to simplify the building of reusable IRT commands. Like EQS, the program includes a full service data management and general statistics component for preliminary data screening. EQSIRT is transportable across Microsoft Windows, Apple's Mac OS X (10.6 or higher), and various Linux operating systems.
Analyses: Cognitive Diagnostic Models; Item & Test Analysis; Latent Class Models
System Requirements: Windows, Mac, Linux
Measurement Model: IRT/Rasch
License Type: Commercial
Documentation: Unlimited technical support