Psychometric Properties of Composite Theta Scores for Simple Structure MIRT Model

• In Event: GSIC Poster Session II

Abstract

This study introduces analytic formulas and procedures for estimating CSEMs, reliability coefficients, and classification indices for the composite theta scores under the framework of SS-MIRT model. Preliminary results from two real data sets, one mixed-format assessment and one test spanning multiple content domains, are presented to illustrate the proposed methods.

Authors

• Huan Liu, The University of Iowa

• Won-Chan Lee, UNIVERSITY OF IOWA