Performance of Normal and Dyslexic Readers on the Kaufman Assessment Battery for Children (K-ABC): A Discriminant Analysis

Abstract

This study examined the utility of the Kaufman Assessment Battery for Children (K-ABC) in differentiating between normal and matched dyslexic readers. Significant differences between the groups were manifested on the cognitive subtests of Hand Movements, Number Recall, Word Order, and Matrix Analogies, in favor of the normal readers. The normal readers also produced significantly superior scores on each Achievement Subtest, the Sequential and Achievement Factors, and the Mental Processing Composite. One significant discriminant function was generated which accounted for 66% of the variance between the groups of the K-ABC subtests. The discriminant analysis resulted in an overall 91% correct classification rate.