"An investigation of the production and content of broadcast news in Nigeria, Sweden and Ireland to shed light on two questions: What picture of the world is provided by broadcast news, and how is this picture related to the routine demands of news production in broadcasting organizations? Answers, which involve discussions about the social role of journalism, the ideological nature of news, and the possibility of change, indicate that news is shaped by a variety of organizational, cultural, economic and normative restreints. The authors find that news is more nearly a reflection of the forces that produce it than of the events and processes in social reality." (Eleanor Blum, Frances G. Wilhoit: Mass media bibliography. 3rd ed. Urbana: University of Illinois Press, 1990 Nr. 628)