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Peer reviewedPrior, Margot; Hoffmann, Wendy – Journal of Autism and Developmental Disorders, 1990
Compared to children matched for mental or chronological age, 12 autistic children (ages 10-17) showed frontal lobe processing problems on neuropsychological tests. Subjects made more errors on the Wisconsin Card Sorting Test and the Milner Maze and took longer to complete the maze but copied a complex figure as accurately and speedily as…
Descriptors: Autism, Chronological Age, Cognitive Ability, Intermediate Grades
Peer reviewedPerry, Adrienne; And Others – Journal of Autism and Developmental Disorders, 1991
This study of 28 girls (ages 2-19) with Rett Syndrome found profound handicaps in the intellectual and adaptive areas, according to standardized tests. Subjects seemed capable of learning some self-help skills at a basic level. The Cattell Mental Age was significantly negatively correlated with chronological age. (JDD)
Descriptors: Adaptive Behavior (of Disabled), Age Differences, Chronological Age, Cognitive Ability
