Item response theory (IRT) has moved beyond the confines of educational measurement into assessment domains such as personality, psychopathology, and patient-re

Item response theory has become an essential component in the toolkit of every researcher in the behavioral sciences. It provides a powerful means to study indi

This comprehensive Handbook focuses on the most used polytomous item response theory (IRT) models. These models help us understand the interaction between exami

Drawing on the work of internationally acclaimed experts in the field, Handbook of Item Response Theory, Volume One: Models presents all major item response mod

First thorough treatment of multidimensional item response theory Description of methods is supported by numerous practical examples Describes procedures for mu