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Peer reviewedLewis, Marc D.; Ash, Anthony J. – International Journal of Behavioral Development, 1992
A longitudinal study of 31 babies in their twelfth through twenty-third weeks of age tested the Neo-Piagetian theory of a shift or spurt in infants' cognitive development at the age of 4 months. Results were consistent with this neo-Piagetian concept of stage change. (MDM)
Descriptors: Cognitive Development, Developmental Stages, Epistemology, Foreign Countries
Peer reviewedMorss, John R. – International Journal of Behavioral Development, 1987
Explores longstanding inconsistencies in Piaget's account of development of spatial representation and perspective-taking. Examines Piaget's early writings and the findings of the original "three mountains" experiment. Concludes that Piaget's alternative theory is compatible with contemporary thinking and is important as a contributory…
Descriptors: Cognitive Ability, Cognitive Development, Egocentrism, Epistemology
