This document discusses various theories related to media influence and representation, including cultivation theory, cultural effects theory, pluralism, hegemony, stereotypes, implicit personality theory, social identity theory, and countertypes. It provides definitions and perspectives from theorists such as George Gerbner, Henry Giroux, Stanley Cohen, Richard Dyer, and Henri Tajfel on how media representations can influence audiences and society over time through reinforcement of dominant ideologies and social norms.