Trait-based personality theories, such as those defined by Raymond Cattell define personality as the traits that predict a person's behavior. On the other hand, more behaviorally based approaches define personality through learning and habits.
This was one year after the first department of sociology was established at the University of Chicago. In 1919, a separate School of Sociology was created, and in 1930, the present Department of Sociology came into being. Following World War II, the department, along with the university as a whole, expanded rapidly. Before World War II the department had a masterâs program from which a handful of students had graduated.
People who study sociology are called sociologists. Auguste Comte (1789 - 1857) was first to use the term. The problems caused by the change to an industrial society, where many people moved to cities and worked in factories, was an early focus of sociology. Karl Marx, Max Weber and Ãmile Durkheim were leading figures in the study of social phenomena.