Jean Piaget was a Swiss psychologist known for his work in developmental psychology. His major area of interest was in understanding how children develop intellectually, through stages of cognitive development that involve the acquisition of knowledge and understanding of the world around them.
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Jean Piaget had one wife, Valentine Châtenay, with whom he had three children.
His full name was Jean William Fritz Piaget, so he had two middle names.
Jean Piaget published his theory of cognitive development in 1936.
Jean Piaget and his wife, Valentine Châtenay, had three children: Jacqueline, Lucienne, and Laurent.
The Jean Piaget Centennial conference was held in Geneva, Switzerland, in August 1996 to commemorate the 100th anniversary of Piaget's birth. It brought together scholars and researchers from around the world to celebrate Piaget's contributions to developmental psychology.