The Abilities of Adolescent and Adult High-Grade Male Defectives

Abstract
During the first half of 1049 a battery of cognitive and personality tests was given to a sample of 104 adolescent and adult high-grade male defectives resident in Darenth Park, Dartford. The testing was carried out by N. O'Connor and the writer, in collaboration with Dr. J. M. Crawford, Deputy Superintendent of Darenth Park. The following report presents a summary of the cognitive and motor test findings, and discusses some of their implications.

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