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Peer reviewedMiller, Leon K.; Barg, M. D. – Child Development, 1982
In a series of experiments, young children were asked to compare the quantities of classes of objects under two conditions: (1) when one of the classes of objects is a subordinate of the other (the traditional class-inclusion problem), and (2) when the terms refer to exclusive sets but different levels of generality. (Author/RH)
Descriptors: Classification, Cognitive Ability, Cognitive Development, Context Effect
