The purpose was to investigate concept attainment by deaf and hearing adolescents. There were 30 deaf Ss matched first with 30 hearing Ss on sex, age, and IQ and then with 30 hearing Ss on sex, school achievement, and IQ. All Ss were tested individually on 6 concept problems. The conclusions were: (a) deaf Ss manifest capability equal to hearing Ss in tying together sensory impressions and in making use of these integrated sensory impressions to classify new objects, (b) deaf Ss show greater cautiousness in taking the initial step in problem solving, (c) deaf and hearing Ss proceed in concept attainment tasks by the use of similar strategies.
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