As a scientific discipline, social psychology is only a bit older than one hundred years, with most of the growth occurring during the past five decades (McGarty & Haslam, 1997). By most standards, social psychology is a relatively young science. In discussing the discipline's history, it should be noted that there are two social psychologies, one in psychology and the other in sociology, with the larger of the two being the psychological branch (Jones, 1998). The central focus of psychological social psychology is how the individual responds to social stimuli, whereas sociological social psychology focuses on larger group or societal variables, such as people’s socioeconomic status, their social roles, and cultural norms (Stryker, 1997). Although there have been calls to merge the two social psychologies into a single field (Backman, 1983)-—and even a joint psychology-sociology doctoral program at the University of Michigan from 1946 to 1967--their different orientations make it doubtful that this will transpire in the foreseeable future. In this historical overview, the psychological branch of the discipline will be highlighted.
Wundt and The Dawning of a Scientific Discipline: 1862-1894
German psychologist Wilhelm Wundt (1832-1921), who is widely regarded as the founder of psychology, had a hand in the early development of what would become social psychology. In 1862, Wundt proposed that there should be two branches of psychology: physiological psychology and social or folk psychology (Völkerpsychologie). Largely due to his influential writings, by 1900 Germany's annual bibliography of the psychological literature listed over 200 articles per year under the heading "social psychology." Despite his influence in shaping social psychology in Europe, Wundt's ideas had little impact on American social scientists because his writings were not translated into English and his conception of psychology as the "science of the