The persuasive effect of source credibility: a situational analysis.

The interactive effects of source credibility and other variables which affect the communication process are reviewed, and the extent to which these data are ordered by cognitive response and attribution theories is examined. On the basis of this review (1) situations where a credible source facilities, inhibits, and has no systematic persuasive effect are identified; (2) the explanatory power of cognitive response and attribution theory is demonstrated; and (3) a common language linking these theoretical formulations is advanced, providing a framework for investigating the persuasive mass communication process.