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Peer reviewedVolkmar, Fred R.; And Others – Journal of Autism and Developmental Disorders, 1992
Data on 52 individuals with and 62 individuals without autism were analyzed to assess developmental aspects of the DSM-III-R (Diagnostic and Statistical Manual III, Revised) diagnostic system. Findings indicate that DSM-III-R criteria are more developmentally oriented and more behaviorally specific than previous criteria, but the diagnostic…
Descriptors: Autism, Clinical Diagnosis, Developmental Stages, Developmental Tasks
Peer reviewedDillon, Ronna; Carlson, Jerry S. – Educational and Psychological Measurement, 1978
The effects of performance-enhancing modifications of testing procedures of a Piagetian-type instrument were investigated for samples of elementary school-aged White, Black, and Mexican-American children. Results are discussed in terms of test validity. (JKS)
Descriptors: Age Differences, Cultural Influences, Developmental Stages, Developmental Tasks
