The relationships between feedback, its source, and the increases or decreases of the behavior associated with it were investigated to apply predictions of the credibility gap regarding the effects of feedback on the acquisition of an individual skill. Subjects (N=45) were randomly assigned to one of five treatment conditions and provided…

In order to test whether constant eye contact, formal posture, and varied vocal inflection increase source credibility and listener comprehension, 144 college students in an introductory speech communication course were placed in groups of equal size that listened to the same informative speech. The speaker presented to each group a different…