 Katz, Blumler, and Gurevitch discovered five components of the theory; (1) the media competes with sources of satisfaction, (2) goals of mass media can be discovered through data and research, (3) media lies within the audience, (4) an audience is conceived as active, and (5) judgment of mass media should not be expressed until the audience has time to process the media and its content on their own.David Giles has been publishing in the area of media psychology since 2000.He wrote a book about media psychology in 2003.