Two questions were the focus of this study. Do television network presentations of the same event significantly vary in their use of nonverbal production techniques? If they do differ, what effect do these differences have on receiver's attitude toward the object of that network coverage? Phase 1 of the study examined the speeches of Ted Kennedy and George McGovern at the 1972 Democratic National Convention as broadcast by CBS, NBC, and ABC. The video portions of the speeches were analyzed along four variables which had been previously found to affect receiver judgments: length of shot, image size, camera angle, and severity of camera angle. The differences found in camera treatment resulted in the hypothesis that different camera treatments would result in differential attitudes of receivers toward a televised political source. Phase 2 utilized 12 semantic differential scales for measuring four dimensions of source credibility. These were administered to approximately 240 college students enrolled in sections of an introductory communication course. Only one significant difference was found: Kennedy's extroversion was significantly lower for subjects who viewed the speech on CBS than for those who watched the same speech on NBC. Character and competence dimensions both collapsed. (HOD)