Evaluating Subpopulation Invariance of Linking Functions to Determine the Anchor Composition for a Mixed-Format Test NEAT

Author(s):: Kim, Sooyeon; Walker, Michael E.
Publication Year:: 2009
Report Number:: RR-09-36
Source:: ETS Research Report
Document Type:: Report
Page Count:: 24
Subject/Key Words:: Mixed-Format Test, Non-Equivalent-Groups Anchor Test (NEAT) Design, Gender Differences, Subpopulation Invariance, Equating, Multiple-Choice Items, Constructed-Response Items

Abstract

The research reinforces subpopulation invariance indices as a means of determining the adequacy of the anchor.