McCarthy scales, McCarthy screening test, and Kaufman's McCarthy short form correlations with the Peabody Individual Achievement Test

Abstract

In this investigation, the relationships between the McCarthy Scales General Cognitive Index, the McCarthy Screening Test, Kaufman's McCarthy short form, and the Peabody Individual Achievement Test were examined. The sample included 39 children randomly selected from four classes in an elementary school. Results indicated that the Estimated General Cognitive Index by Kaufman's short form was virtually identical to the McCarthy Scales (full form) Index. The McCarthy Scales, McCarthy Screening Test, and Kaufman's short form all correlated significantly (p=.01) with the Peabody Individual Achievement Test, with the exception of the McCarthy Motor Scale. Moreover, there was no significant difference between the Peabody Total Test/Kaufman McCarthy short form correlation of.55 and the Peabody Total Test/McCarthy Screening Test correlation of.54 (t=0.09). Implications of these findings are discussed.