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Acredolo, Curt – Human Development, 1997
Suggests some difficulties and challenges in understanding and teaching Piaget's new theory. Outlines some differences between Piaget's new and standard theories, such as the diminished status of the emergent skills that mark the onset of concrete operational thinking and the perception of achievements in concrete operations as empirical…
Descriptors: Classification, Cognitive Development, Conservation (Concept), Developmental Stages