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Jean Piaget was born in Switzerland.
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In 1921, Piaget returned to Switzerland as director of the Rousseau Institute in Geneva.
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In 1923, he married Valentine Châtenay; the couple had three children, whom Piaget studied from infancy.
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Piaget recieved an honorary doctorate from Harvard in 1936.
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In 1964, Piaget was invited to serve as chief consultant at two conferences at Cornell University (March 11–13) and University of California, Berkeley (March 16–18).
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In 1979 he was awarded the Balzan Prize for Social and Political Sciences.
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Piaget died on September 16th 1980 of old age.