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Interpersonal influence〔Forsyth, D.R. (2010). Group dynamics (5th edition). Belmont, CA: Wadsworth.〕 is a type of social influence which results from group members encouraging, or forcing, conformity while discouraging, and possibly punishing, nonconformity. The effects of ''interpersonal influence'' were well documented through Schachter’s 1951,〔Schachter, S. (1951). Deviation, Rejection, and Communication. ''The Journal of Abnormal and Social Psychology 46'' (2): 190–207. doi:10.1037/h0062326.〕 experiments involving three confederates in an all-male discussion group. One confederate was the ''deviant'', who was assigned to always disagree with the majority; the next was the ''slider'', who disagreed initially but was told to eventually conform; and the last was the ''mode'', whose task was to consistently agree with the majority. Schachter was interested specifically in how the group would pressure the deviant to conform. He found that communication with the deviant increased steadily over the course of the discussion, but in more cohesive groups, the deviant became rejected. These results highlight the difference between ''inclusive'' and ''exclusive'' reactions: in an inclusive reaction, the majority and minority argue their opinions, but the minority is still considered to be part of the group. In contrast, in an exclusive reaction, communication diminishes, hostility increases, and the minority becomes rejected entirely. Studies have shown that the affective distress cause by such ostracism and rejection linger long after the event has occurred, and even if the rejected individual is later accepted back into the group.〔Zwolinski, J. (2014). Does inclusion after ostracism influence the persistence of affective distress?. Group Dynamics: Theory, Research, And Practice, 18(4), 282-301. doi:10.1037/gdn0000012〕 ''Interpersonal rejection'' is a consequence of interpersonal influence. For example, the deviant in this study was rated the lowest by fellow group members on likability and was assigned more menial tasks. Additionally, the slider was less well liked than the mode, despite listening to reason and shifting opinions. This shows that any amount of disagreement with a majority can lower one’s chances of acceptance. Those with low self-esteem have been found to respond worse to rejection, likely due to self-blame attributions.〔Ford, M. B., & Collins, N. L. (2010). Self-esteem moderates neuroendocrine and psychological responses to interpersonal rejection. Journal Of Personality And Social Psychology, 98(3), 405-419. doi:10.1037/a0017345〕 ''Black-sheep effect'' is another consequence of interpersonal influence, and occurs when group members who perform an offensive behavior are judged more harshly by their ingroup than an outgroup member who does the same. ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Interpersonal influence」の詳細全文を読む スポンサード リンク
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