CORRESPONDENCES BETWEEN ACT™ AND SAT® I SCORES

Abstract

ABSTRACTCorrespondences between ACT™ and SAT® I scores are presented from a conceptual framework that distinguishes among three kinds of correspondences, namely, equating, scaling, and prediction. Construct similarity plays an important role in determining the nature and degree of correspondence that can be achieved. This report also maintains that statistical indices in conjunction with rational considerations are needed to determine whether the highest level of correspondence attainable between scores from two admission tests is the conceptual and statistical exchangeability sought by equating, the distributional similarity achieved by scaling, or the association attained by prediction.Relationships among the different scales of the ACT and SAT I are described in the context of the conceptual framework developed herein. Sums of scores, composites of scores, and individual scores are examined. Different types of correspondences between different sets of scores from these two admission tests are amenable to different interpretations.