The document discusses several media and communication theories: 1) The two-step flow model suggests that most people's opinions are influenced by opinion leaders who are influenced by mass media. 2) Cultivation theory proposes that repeated media messages can influence people's views of reality. 3) Uses and gratification theory examines how people use media to fulfill needs like entertainment and social connection. 4) Reception theory explores how audiences can have preferred, negotiated, or oppositional readings of media messages.