Concrete and Formal Operations in very Bright 6- to 11-Year-Olds

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Abstract
25 children ranging in age from 6 to 11 years whose IQ’s were in excess of 160 were given three Piagetian tests of advanced concrete operations and two tests of formal operations. All children passed all concrete operations problems, but only four of the oldest boys passed the formal operations tasks. The findings support the reality of Piaget’s stage structures but suggest that the speed with which tasks within a stage are mastered (horizontal décalagé) is a function of intelligence in the psychometric sense.

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