IRT Chained Equipercentile Equating

• In Event: GSIC Poster Session II

Abstract

This study aims to propose a new IRT chained equipercentile (CE) equating method under the common-item nonequivalent groups (CINEG) design. The new method utilizes the IRT fitted score distributions instead of the observed score distributions in traditional CE equating. The effects of ability distribution on the equating results were also evaluated.

Authors

• Min Liang

• Won-Chan Lee, UNIVERSITY OF IOWA