努力支出减少了亲社会决策:计算原理和神经机制
Yaxin Zhang1, Jiarui Dong1, Ningxuan Chen1,2
1Beijing Key Laboratory of Learning and Cognition and School of Psychology, Capital Normal University, Beijing, China.
Human brain mapping
|July 19, 2025
概括
努力使人们变得不那么慈善. 提高奖励灵敏度和努力后更快的自我利益积累导致捐款减少,特别是昂贵的捐款.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 行为经济学是一种行为经济学.
背景情况:
- 慈善捐赠是一种代价高昂的亲社会行为.
- 努力支出对亲社会决策及其神经认知基础的影响尚未得到充分理解.
研究的目的:
- 调查努力支出如何影响后续的亲社会决策.
- 探索基于努力的亲社会行为背后的神经认知机制.
主要方法:
- 进行了两项实验,采用认知建模和电生理学记录.
- 参与者执行了涉及体力劳动或休息的任务,获得了金钱奖励,并决定以不同的成本接受捐赠.
主要成果:
- 参与者在付出努力后更有可能拒绝捐赠的提议,特别是对于更高的成本.
- 劳动力支出导致了更快的信息积累和减少决策中的证据要求.
- 电生理学数据显示,在努力后,奖励敏感神经反应 (奖励积极性,fb-P3,fb-delta功率) 增加.
结论:
- 努力支出放大了奖励灵敏度,加速了自我利益的积累.
- 这个过程简化了决策,并加强了以自我为中心的选择,导致慈善捐赠减少.
- 与努力相关的神经认知变化直接与社会行为下降相关.
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