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A national poll and a content analysis of network newscasts examined if coverage of foreign nations had an agenda-setting influence. The more media coverage a nation received, the more likely respondents were to think the nation was vitally important to U.S. interests, supporting the agenda-setting hypothesis. The more negative coverage a nation received, the more likely respondents were to think negatively about the nation, supporting the second level of agenda setting. Positive coverage of a nation had no influence on public perceptions.
Wanta et al. (Tue,) studied this question.