Combining Generalizability Theory and Item Response Theory: A Methodological Review

• In Event: Advances in Item Response Theory Modeling and Application

Abstract

The purpose of this review was to describe the use and prevalence of unified or combined generalizability theory (GT) and item response theory (IRT) models across fields through the end of 2018 and discuss some methodological issues inherent within combined Model. My results identified two major common models that combine both GT and IRT, Hierarchical Rater Model (HRM) and Generalizability in Item Response Modeling (GIRM) and several methodological issues corresponding to the uses of combined GT and IRT models, and suggest recommendations and implications for different researchers interested in combined GT and IRT in different fields.

Author

• Mingying Zheng, The University of Iowa