The Society of Experimental Social Psychology (SESP) is a scientific organization of social scientists founded in 1965 with the goal of advancing and communicating theories in social psychology. Its first chairperson was Edwin P. Hollander.[1] To expand the knowledge of social psychology, Edwin P. Hollander and his colleague Edgar Vinacke wrote 35 other social psychologists in the interest of a research-oriented social and personal psychology society. This focus was to develop a smaller group of research-oriented scientists with similar interests within the field of social psychology.