A Validation Study of the Detroit Tests of Learning Aptitude-Primary

Abstract

Validity of the test scores from the Detroit Tests of Learning Aptitude-Primary: Second Edition (DTLA-P:2) was evaluated by examining correlations between it and the Woodcock-Johnson Psycho-Educational Battery (WJPB), an instrument with established validity. Fifty-seven students in kindergarten through second grade were given the DTLA-P:2 and the WJPB, Part I (the Broad Cognitive Ability: Preschool Scale) and Part II (the Reading, Math, and Skills Clusters). Pearson product-moment correlation coefficients were calculated between the DTLA-P:2 quotients and the WJPB clusters. Correlation coefficients from.68 to.87 indicated a strong relationship between the two and provided evidence for the criterion-related and construct validity of the DTLA-P:2 test scores when using the WJPB as the criterion variable.

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