How do scores from different tests relate to each other? Three types of score linkage are discussed: equating, concordance, and prediction of expected scores. Statistical indices, in conjunction with rational considerations, are needed to determine whether the highest level of linkage attainable between scores from two "tests" is the…

Distinctions were made between three classes of statistical linkage: equivalence, concordance, and prediction. These distinctions were based on rational content considerations and empirical statistical relationships. A large database involving SAT I and ACT scores was used to determine which type of linkage was best suited for different scores and…

Correspondences between ACT[superscript TM] and SAT[superscript R] 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…