Cognitive development is an intellectual growth from infancy to adulthood. Jean Piaget (1896-1980), a Swiss psychologist, was one of the most important and influential researchers in the field of developmental psychology throughout the 20th century. Piaget was born in Neuchâtel, Switzerland, on August 9, 1896. His father, Arthur Piaget, was a professor of medieval literature with an interest in local history. His mother, Rebecca Jackson, was intelligent and energetic. The oldest child, he was very independent and took an early interest in nature. …
