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Vandenberg, Brian R. – Merrill-Palmer Quarterly, 1985
Exploratory behavior of educationally mentally retarded 7- to 12-year-old children was compared to that of two independent groups of normal children matched on chronological and mental age. In a multidimensional assessment of exploration, results suggested that delays in exploratory behavior in retarded children are developmental in nature, and…
Descriptors: Behavior Development, Children, Chronological Age, Developmental Disabilities

Pearson, Deborah A.; Aman, Michael G. – Journal of Autism and Developmental Disorders, 1994
This study assessed the relationship between parent/teacher ratings of hyperactivity and developmental indices in psychiatric clinic children (ages 5-16). Findings suggest that chronological age should be considered when behavior ratings are used to assess cognitively delayed children for hyperactivity but do not support use of mental age in…
Descriptors: Behavior Development, Behavior Disorders, Behavior Standards, Child Development