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He was born in Neuchatel, Switzerland
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(exact date is unknown.) At age 11, while he was a pupil at Neuchâtel Latin high school, he wrote a short notice on an albino sparrow.
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(exact date is unknown.) Piaget became the director of studies at the J.-J. Rousseau Institute in Geneva.
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(exact date is unknown.) Jean Piaget marries Valentine Chatenay in Geneva.
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(exact date is unknown.) psychology, sociology and history of science at Neuchâtel from 1925 to 1929.
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(exact date is unknown.) Piaget's first child is born.
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(exact date is unknown.) Second daughter is born
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(exact date is unknown.) The International Bureau of Education from 1929 to 1967
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(exact date is unknown.)
His first son is born -
(exact date is unknown.) psychology and sociology at Lausanne from 1938 to 1951
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(exact date is unknown.) Sociology at Geneva from 1939 to 1952.
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(exact date is unknown.) Became director of International Center for Epistemology in Geneva.
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(exact date is unknown.) Defined the four stages of intellectual development.
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Piaget Dies at the age of 84.