Jean Piaget is generally recognized as the preeminent developmental psychologist of the twentieth century. His work investigating the growth of intelligence from infancy through adolescence is basic to an understanding of child and cognitive psychology. Because he opened new fields of inquiry, Piaget had to create a new vocabulary for his discoveries; his concepts are not easily understood from reading about them. In this film Piaget’s student, Dr. David Elkind, introduces the research methods and terminology of Piaget’s theories with demonstrations and apt real-life examples enabling students to more easily understand the concepts involved. Archival materials also document the course of Piaget’s life.