人类中的小区性利他主义
Helen Bernhard1, Urs Fischbacher, Ernst Fehr
1University of Zurich, Institute for Empirical Research in Economics, Blumlisalpstrasse 10, CH-8006 Zurich, Switzerland.
Nature
|August 25, 2006
概括
社会规范指导合作,但受到小区主义的影响,偏爱自己的团体. 实验表明,惩罚者更多地保护群体内受害者,导致群体内更多的违反规范.
科学领域:
- 社会科学 社会科学 社会科学
- 进化生物学 进化生物学
- 行为经济学是一种行为经济学.
背景情况:
- 社会规范和利他主义行为对于人类的合作和社会秩序至关重要.
- 规范的遵守和执行往往与群体间的冲突和小区主义有关.
研究的目的:
- 调查小区主义对土著群体社会规范强制执行的影响.
- 在违反规范和惩罚的背景下测试小区主义的预测.
主要方法:
- 在巴布亚新几内亚的土著群体中进行了惩罚实验.
- 利用"公正"的观察员来惩罚违反规范的人,不同的团体归属.
主要成果:
- 惩罚者不成比例地保护内组受害者而不是外组受害者.
- 违反规范的人预计同类惩罚者会宽容.
- 当惩罚者和违规者属于同一群体时,违规行为发生的频率更高.
结论:
- 实验结果证实了在规范执法中偏执主义的预测.
- 这些发现挑战了现有的进化理论,这些理论仅仅基于群体灭绝或个体选择.
- 强调需要将群体间的互动纳入社会行为的进化模型.
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