According to Wikipedia,
John H. Flavell is an American developmental psychologist specializing in children's cognitive development. Education After serving in The United States Army for two years from 1945 to 1947, John H. Flavell enrolled at Northeastern University where he earned his bachelor's degree in psychology. After graduation, he was admitted into the clinical psychology program at Clark University and Harvard University. John H. Flavell earned his MA from Clark University in 1952 and in 1955 he earned his Ph.D. Through the discovery of new developmental phenomena and analysis of the theories of Jean Piaget, Flavell shifted the direction of developmental psychology in the United States.
John H. Flavell is affiliated with the following schools: