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Profiles of Learning Disability Subtypes in a Retrospective Sampling of Adolescents' Scores on the Woodcock-Johnson Psycho-Educational Battery-Revised

This study was an effort to subtype adolescents' learning disabilities using scores on the Woodcock-Johnson Psycho-Educational Battery–Revised. A cluster analysis of 88 cases classified as learning disabled and 75 as nonlearning disabled was conducted to characterize subtypes. Two distinct subtypes emerged for the group while one for the nonlearning disabled group was identified. A multivariate analysis of variance to test for differences in scores among the identified subtypes yielded significant differences, suggesting that these students had two specific types of learning disorders. Cross-validation is essential.