Highly Credible Sources: Persuasive Facilitators or Persuasive Liabilities?

A low credibility source induced a more positive attitude toward his advocacy than did a highly credible source when message recipients' own behavior served as a cue for determining their attitudes. In contrast, when the behavioral cue was absent, a highly credible source did not have an adverse effect on individuals' attitudes or behavior. These findings are interpreted in terms of self-perception theory and cognitive response analysis.