著者

大石 千歳 吉田 富二雄

出版者

筑波大学心理学系

雑誌

筑波大学心理学研究 (ISSN:09158952)

巻号頁・発行日

no.20, pp.163-171, 1998-03-10

著者

大石 千歳

出版者

東京女子体育大学・東京女子体育短期大学

雑誌

東京女子体育大学・東京女子体育短期大学紀要 (ISSN:18816835)

巻号頁・発行日

vol.46, pp.75-85, 2011-03-20

著者

金子 麗奈 中崎 奈都子 田川 徹平 大石 千歳 原 浩二 金 民日 草柳 聡 馬場 俊之 小川 正純 佐藤 譲

出版者

一般財団法人 日本消化器病学会

雑誌

日本消化器病学会雑誌 (ISSN:04466586)

巻号頁・発行日

vol.111, no.3, pp.510-511, 2014 (Released:2014-03-05)

参考文献数

4

被引用文献数

1

著者

大石 千歳

出版者

東京女子体育大学東京女子体育短期大学

雑誌

紀要 (ISSN:18816835)

巻号頁・発行日

vol.54, pp.91-103, 2019-03-20

著者

大石 千歳 吉田 富二雄

出版者

公益社団法人 日本心理学会

雑誌

心理学研究 (ISSN:00215236)

巻号頁・発行日

vol.71, no.6, pp.445-453, 2001-02-25 (Released:2010-07-16)

参考文献数

18

被引用文献数

1 1

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Based on social identity theory (Tajfel, 1978), it is expected that black sheep effect occurs only in cases where ingroup members are compared with outgroup individuals. In study 1, 112 female student nurses were divided into two groups, and evaluated both outgroup and ingroup individuals (outgroup-ingroup condition), or ingroup members only (ingroup-only condition). Black sheep effect was found only in the outgroup-ingroup condition. Ingroup members in the condition were evaluated more extremely than those in the ingroup-only condition, and there was no significant difference between the evaluations of outgroup individuals in the outgroup-ingroup condition and ingroup members in the ingroup-only condition. The results confirmed the ingroup-outgroup comparison prediction. In study 2, in addition to rating four individuals, desirable or undesirable and ingroup or outgroup, 86 female student nurses were asked to indicate the importance of their own social identity. Mack sheep effect was observed, with perception of ingroup homogeneity strengthening ingroup identification, thereby facilitating black sheep effect. These findings support Turners self categorization theory (1982) as an explanation of the mechanism for black sheep effect.

著者

大石 千歳 吉田 富二雄 Oishi Chitose Yoshida Fujio

出版者

筑波大学心理学系

雑誌

筑波大学心理学研究 (ISSN:09158952)

巻号頁・発行日

no.20, pp.163-171, 1998-03-10

著者

大石 千歳

出版者

東京女子体育大学東京女子体育短期大学

雑誌

東京女子体育大学東京女子体育短期大学紀要 (ISSN:18816835)

巻号頁・発行日

no.53, pp.1-15, 2018

著者

大石 千歳 吉田 富二雄

出版者

公益社団法人 日本心理学会

雑誌

心理学研究 (ISSN:00215236)

巻号頁・発行日

vol.73, no.5, pp.405-411, 2002-12-25 (Released:2010-07-16)

参考文献数

18

被引用文献数

5 8

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Black sheep effect (Marques, Yzerbyt, & Leyens, 1988) and ingroup favoritism (Tajfel, Billig, Bundy, & Flament, 1971) appear to contradict each other with respect to the evaluation of inferior ingroup members. In addition to examining the relationship between the two phenomena, this study also examined the effect of ingroup identification on them. Sixty-one female student-nurses participated in the study. To measure black sheep effect, superior and inferior ingroup and outgroup members were rated on 20 adjectives. Distribution matrices (Tajfel et al., 1971) were used to measure ingroup favoritism. The participants were median split according to their level of group identification. Black sheep effect was found only among high-identification participants, who also showed ingroup favoritism. Ingroup identification had a positive correlation with both ingroup favoritism and black sheep effect. Overall, ingroup favoritism had a positive correlation with the evaluation of superior members, while it had a negative correlation with that of inferior ingroup members.