The document discusses agenda setting theory in mass communication. It states that media have the ability to determine which issues are important to the public by influencing what people think about rather than what to think. It provides background on the origins of the theory from Lippmann and Cohen and empirical research by McCombs and Shaw. Later research identified features like vividness, positioning and priming. The document also discusses agenda building, influences on media agendas, framing, and criticisms of agenda setting theory with examples of how Pakistani media practices it.