ERIC Number: ED063741
Record Type: RIE
Publication Date: 1972-Apr
Reference Count: 0
The Effects of Message Sidedness and Evidence on Inoculation Against Counterpersuasion in Small Group Communication.
McCroskey, James C.; And Others
Two hypotheses were tested in an experiment on the generalizability of McGuire's innoculation theory of attitude change: that subjects would be less influenced by counterpersuasion in a small group communication setting if an initial persuader employs a two-sided refutational message than if he employs a one-sided message; and that subjects will be less influenced by counterpersuasion in a small group setting if an initial persuader includes evidence in his message than if he does not. The independent variables in the study were message sidedness, evidence, counterpersuasion in a small group setting, and source credibility. The subjects, 518 college students enrolled in a basic communication course, were randomly assigned by class to the 16 experimental conditions, and then further randomly assigned within each class to three discussion groups. Each discussion group in the counterpersuasion condition was assigned a confederate to insure that counterpersuasion would be introduced in the small group setting. Pretest attitudinal questionnaires were administered, and both immediate and delayed posttest measures of attitude change were obtained after presentation of the persuasive message. Results of the study supported the first hypothesis, although for unclear reasons, and did not support the second hypothesis. (SH)
Publication Type: N/A
Education Level: N/A
Authoring Institution: Illinois State Univ., Normal. Communication Research Center.
Note: Paper presented at the International Communication Association Annual Convention (Atlanta, Georgia, April 19-22, 1972)