Symbolic interactionism is a sociological theory that examines how individuals create and interpret their social world through symbols and interactions. The theory, which originated from the works of George Herbert Mead, Charles Horton Cooley, and Herbert Blumer, emphasizes the dynamic nature of social interactions and the importance of symbols in shaping identities and meanings. Despite its contributions, the theory has been critiqued for neglecting macro-level issues that influence individual interactions.