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Bekey, Shirley – Educational Research Quarterly, 1987
Gifted and highly gifted girls in grades four to six were given Piagetian-type manipulative problem-solving tasks reflecting formal operations. Although Flavell suggested that a chronological age of 10 years was necessary for successful completion of these tasks, time allowed was a more valid predictor. (LMO)
Descriptors: Age Differences, Developmental Stages, Females, Formal Operations