Hadley Cantril

Albert Hadley Cantril, Jr. was an American psychologist from Princeton University, who expanded the scope of the field. Cantril made "major contributions in psychology of propaganda; public opinion research; applications of psychology and psychological research to national policy, international understanding, and communication; developmental psychology; psychology of social movements; measurement and scaling; humanistic psychology; the psychology of perception; and, basic to all of them, the analysis of human behavior from the transactional point of view."