On this day in 1896, psychologist Jean Piaget was born in Switzerland. Jean Piaget's work had a profound influence on psychology, especially our understanding the intellectual development of children. His research contributed to the growth of developmental psychology, cognitive psychology, genetic epistemology and education. Albert Einstein once described Piaget's observations on the intellectual growth and thought processes of children as a discovery "so simple that only a genius could have thought of it."
You can learn more about his life, career, and influence on psychology in this Jean Piaget biography.