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JEAN PIAGET
1896-1980

"To present an adequate notion of learning one must first explain how the individual manages to construct and invent, not merely how he repeats and copies."

Jean Piaget [zhäNpyä´jA], was a Swiss psychologist known for his research in developmental psychology. After receiving a degree in zoology from the Univ. of Neuchâtel (1918), Piaget's interests shifted to psychology. He studied under C. G. Jung and Eugen Bleuler in Zürich, and then in Paris at the Sorbonne. There, he worked with Alfred Binet in the administration of intelligence tests to children. In reviewing the tests, Piaget became interested in the types of mistakes children of various ages were likely to make. After returning to Switzerland in 1921, Piaget began to study intensively the reasoning processes of children at various ages. In 1929, he became professor of child psychology at the Univ. of Geneva, where he remained until his death, also serving as professor of psychology at the Univ. of Lausanne (1937–54). Piaget theorized that cognitive development proceeds in four genetically determined stages that always follow the same sequential order.

Description of Piaget obtained at Infoplease.com