社会的相互作用場面における対人認知の研究-4-ゲ-ム相互作用場面の対人(集団)認知における集団成極化効果

概要

論文の詳細を見る
Fourty-two female students, either individually or in three person groups, were instructed to be cooperative and participated in 15 trials of the Prisoner's Dilemma Game against a simulated noncooperative opponent which made only 20 percent cooperative choices. After completion of the trials, subjects in the individual condition were asked to evaluate their own and their opponent's intentions during the game on nine adjective scales, and to evaluate their successfulness. Subjects in the group condition were asked to discuss the same items and to respond by consensus. (1) Over the course of the trials, both individuals and groups became less cooperative, assimilating to their opponent's strategy. (2) Perceived dissimilarities between self and the opponent on nine adjective scales were larger in groups than in individuals, with groups reporting stronger feelings of failure than individuals about the game outcomes as well. Thus, the prediction of group polarization effects was supported. (3) Groups attributed more responsibility to the opponent than to themselves, whereas individuals attributed equal responsibility to both.
公益社団法人日本心理学会の論文