The study of mass communication concepts in this literary refers to the opinion Chaffe and Metzger are evaluating this concept to three important conceptualization about mass communication, that is: 1) the mass communication media as an institution 2) Mass communication as a social problem, and c) Mass communication as an academic study. Concepts related to other mass media is gatekeeping. Kurt Lewin states a theory about group dynamics and the concept of gatekeeper.
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