POSTSTRATIFICATION EQUATING BASED ON TRUE ANCHOR SCORES AND ITS RELATIONSHIP TO LEVINE OBSERVED SCORE EQUATING

Abstract

This paper presents a new equating method for the nonequivalent groups with anchor test design: poststratification equating based on true anchor scores. The linear version of this method is shown to be equivalent, under certain conditions, to Levine observed score equating, in the same way that the linear version of poststratification equating is equivalent to Tucker equating. Some issues related to this result are discussed.