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Peer reviewedRakison, David H.; Butterworth, George E. – Developmental Psychology, 1998
Two experiments used object-manipulation tasks to examine whether one- to two-year-olds form superordinate-like categories by attending to object parts. Findings indicated that 14- and 18-month-olds behaved systematically toward categories with different, but not matching, parts. Without part differences, none formed superordinate categories.…
Descriptors: Age Differences, Attention, Classification, Cognitive Development
