When can a high credibility source be less effective than a moderately credible source?
A. When a receiver has an unfavorable initial attitude or position on the issue.
B. When a receiver has a favorable initial attitude or position on the issue.
C. When the source is arguing for a position that is not in line with his or her own best interest.
D. When the high credibility source is a celebrity.
E. High credibility sources are always more effective than low credibility sources.
Answer: B