Charles Horton Cooley was an American sociologist. He was the son of Michigan Supreme Court Judge Thomas M. Cooley. He studied and went on to teach economics and sociology at the University of Michigan. He was a founding member of the American Sociological Association in 1905 and became its eighth president in 1918. He is perhaps best known for his concept of the looking-glass self, which is the concept that a person's self grows out of society's interpersonal interactions and the perceptions of others. Cooley's health began to deteriorate in 1928. He was diagnosed with an unidentified form of cancer in March 1929 and died two months later.

Sociology is the scientific and systematic study of human society that focuses on society, human social behavior, patterns of social relationships, social interaction, and aspects of culture associated with everyday life. Regarded as a part of both the social sciences and humanities, sociology uses various methods of empirical investigation and critical analysis to develop a body of knowledge about social order and social change. Sociological subject matter ranges from micro-level analyses of individual interaction and agency to macro-level analyses of social systems and social structure. Applied sociological research may be applied directly to social policy and welfare, whereas theoretical approaches may focus on the understanding of social processes and phenomenological method.