The effect of evaluators' negative affect on their estimation of aggressive behavior in others : The moderating role of aggressors' group category

テラグチ, ツカサ

Teraguchi, Tsukasa

釘原, 直樹

クギハラ, ナオキ

Kugihara, Naoki

オオサカ ダイガク ダイガクイン ニンゲン カガク ケンキュウカ タイジン シャカイ シンリガク ケンキュウシツ

欲求不満-攻撃説

不快感情

社会的アイデンティ理論

黒い羊効果

intergroup conflict

frustration-aggression hypothesis

negative affect

social identity theory

black sheep effect

Aggressors typically determine whether or not to aggress by judging the reaction of onlookers to their hostile behavior. However, previous research has not evaluated how individual factors affect this estimation. In the present study, we investigated to what extent evaluators' negative affect acted to increase the state aggressiveness of evaluators. We hypothesized that the more evaluators' negative affect increased in aggression, the more the negative estimation of aggressors would decrease. In addition, we examined whether or not this effect was moderated by aggressor category. A2 (group category: ingroup condition vs. outgroup condition) x2 (participants' affect: negative vs. neutral) between-subjects factorial design was used. Results revealed that within the outgroup condition, the more the negative affect of participants increased, the more participants positively estimated aggressors. On the other hand, no effect of negative affect on participants' estimation was observed within the ingroup condition. These findings suggest that evaluators' negative affect reduces the negative estimation of outgroup aggressors, but not that of ingroup aggressors, implying that the estimation of aggressors by ingroup members is robust and positive.

釘原, 直樹