Rockefeller Foundation and the Swiss National Foundation for Scientific
             Research, Piaget founded the International Centre of Genetic Epistemology
             at Geneva University, which he continued to direct after he retired in
             1971. He also held several positions with UNESCO at various times during
             his life. Piaget died in Geneva on 16 September 1980. (Piaget & Garcia,
             Piaget's work on concept formation in children falls into two main
             phases: an early phase (from 1924 to 1937) in which he established the
             basic differences between thought processes in children and those in
             ...