Groups the psychologists whose primary work concerns how the actual or imagined presence of other people shapes an individual's thoughts, feelings and behavior, the second-largest group among psychology's named figures. Belongs here: Solomon Asch, Leon Festinger, Stanley Milgram, Stanley Schachter, Muzafer Sherif, Henri Tajfel, Philip Zimbardo, Anthony Greenwald, Claude Steele, Melvin Lerner, Fritz Heider, Harold Kelley, John Thibaut, Icek Ajzen, Martin Fishbein, Edward Deci, Alice Eagly, Susan Fiske, John Cacioppo, John Darley, Kenneth Clark, Mamie Phipps Clark, Marie Jahoda, Robert Rosenthal, Richard E. Petty, William Swann, Daryl Bem, Rom Harre, Bronwyn Davies, Irwin Altman, Diederik Stapel, Amy Cuddy and Loran Nordgren. A figure whose social-influence research centers on the workplace or on child development is filed under industrial-organizational or developmental psychology instead.