"Sociology studies human societies, their interactions, and the processes that preserve and change them. It does this by examining the dynamics of constituent parts of societies such as institutions, communities, populations, and gender, racial, or age groups. Sociology also studies social status or stratification, social movements, and social change, as well as societal disorder in the form of crime, deviance, and revolution" (Borgatta & Montgomery 2000, p. 25-26).
Borgatta, Edgar. F. and Montgomery, Rhonda. J. V. 2000. Encyclopedia of Sociology (2nd ed.). New York: Macmillan Reference USA.