An Austrian physician and the found of psychoanalysis. Formed the idea of the id, ego, and superego
Distinguished between gemeinschaft and gesellschaft.
Like other sociologists, considered the self to be a reflection of others. Used the term role-distance to describe the gap between who we are and who we portray ourselves to be
Sociology as a separate science on the grounds that it has both an object patterned reularities as a group distinct from that of individuals and a substratum society as a whole.