原因帰属の自己奉仕バイアスに及ぼす理由思考の効果 : よく考えることで自己奉仕バイアスは強まるか  [in Japanese] Mediating Effect of Effortful Reasoning on the Self-serving Bias : Dose the Self-serving Bias become exaggerated if we think thoroughly?  [in Japanese]

A study was conducted to investigate the effect of effortful reasoning on self-serving bias for success and failure. It was hypothesized that when effortful reasoning takes place before attribution, self-serving bias would be exaggerated. Fifty-eight female college students received either success or failure feedback on social sensitivity test. After reading feedback, participants in the effortful reasoning condition were asked to write down as many reasons as they thought responsible for the outcome, Participants in the no reasoning condition did not receive such instruction. Effortful reasoning led attributions into more self-serving manner. In the success condition, internal attribution was significantly greater than external attribution although they did not differ in the failure condition. The result supported the hypothesis. Implications for cultural psychological view of Japanese self-criticism were discussed.