Ss in four conditions heard the same communication. No slides were shown in a nondistraction condition; irrelevant slides shown in one condition were intended to be moderately distracting, and those in the others to be strongly distracting. Significantly more persuasion occurred in the moderate distraction condition than in the nondistraction condition and in one strong distraction condition. Suspicion of persuasive intent was greater for nondistracted Ss. Festinger & Maccoby (1964) demonstrated that a persuasive communication can be more effective if the audience is somewhat distracted from the communication. The effect seems to have been a reliable one, although it was found in only two of three populations studied and only for Ss who were strongly opposed to the position advocated. Freedman & Sears (1965) found no significant effect of distraction, but their distraction was a weak one, consisting only of misleading instructions preceding a persuasive communication.While moderate distraction may produce greater persuasion, might strong distraction reduce persuasion? (1) In comparison with moderate distraction, strong distraction should make it more difficult for the audience to comprehend a persuasive message, thus making it less likely that a basic point or a compelling sequence of arguments is comprehended. (2) It maybe frustrating to have attention and comprehension made difficult. If the communicator or the experimenter, who in some sense is the communicator's sponsor, is perceived as the source of distraction, audience members might react by rejecting the communication independently of the apparent validity of its assertions. (3) Strong distraction might make the experiment seem ludicrous, leading Ss to reject the communication or the speaker as not worth serious consideration.Festinger and Maccoby assert that distraction enhances persuasion because it makes it difficult for people to think of counterarguments. An alternative interpretation is that audience members do not attempt counterarguments because distraction disguises the experiment as one on comprehension; consequently, suspicion of persuasive attempt is not aroused.The present study was designed to test the hypothesis that there is a curvilinear relation between distraction and persuasion and to investigate the relation of suspicion of persuasive intent to distraction.
MethodThere were four conditions in the experiment, which used a posttest-only design. Ss heard a tape-recorded communication, preceded by instructions to expect to Psychon. Sci., 1966, Vol. 5 (2)
PAUL C. ROSENBLATT
UNIVERSITY OF MISSOURIevaluate the communication after hearing it. In three of the conditions Ss saw slides accompanying the talk. In the fourth, a projector illuminated the screen, but no slide was shown. In each of the three conditions that used slides, there were six slides, and the slides were changed at exactly the same points during the talk.The communication used was one advocating opposition to tuberculosis chest X-ray surveys, a position at great variance f...