Jk. Beggan et St. Allison, THE LANDSLIDE VICTORY THAT WASNT - THE BIAS TOWARD CONSISTENCY IN RECALL OF ELECTION SUPPORT, Journal of applied social psychology, 23(8), 1993, pp. 669-677
Experiments that test for the judgmental bias that results from a pref
erence for cognitive consistency often contain two threats to their in
ternal validity. First, the subjects are asked to make judgments about
themselves. Thus, the biases that result may be explained in terms of
cognitive consistency or the motivation to see oneself in a positive
light. Second, the decision subjects are asked to make is often diffic
ult to verify objectively. The present research sought evidence in sup
port of cognitive consistency using a methodology that avoided these t
wo confounds. The context chosen was the tendency of perceivers to use
the outcome of a group decision to make inferences about the magnitud
e of group members' support for the outcome. The present experiment ex
amined whether people in Richmond, Virginia, would use the outcome of
a gubernatorial election to make decisions regarding the percentage of
people in favor of the winning candidate. Although the winner won by
less than one-half of one percent of the popular vote, we found that t
he subjects significantly overestimated the degree of voter support he
received and underestimated the degree of support his opponent receiv
ed. Moreover, this tendency was exacerbated over time.