An Investigation of Chi-Square and Entropy Based Methods of Item-Fit Using Item level Contamination in Item Response Theory

摘要

New variants of entropy as measures of item-fit in item response theory are investigated. Monte Carlo simulation(s) examine aberrant conditions of item-level misfit to evaluate relative (compare EMRj, X~2, G~2, S-X~2, and PV-Q_1) and absolute (Type I error and empirical power) performance. EMRj has utility in discovering misfit.