这是值得的吗? 子通过主观调整努力成本来折扣奖励
Mark Burrell1, Alexandre Pastor-Bernier1, Wolfram Schultz2
1Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge CB2 3DY, United Kingdom.
概括
子通过从奖励价值中减去努力的主观成本来做决定. 它们的努力成本根据先前的经验而适应,这表明灵长类动物的决策取决于经验.
科学领域:
- 行为经济学是一种行为经济学.
- 神经科学是一个神经科学.
- 灵长类的认知能力
背景情况:
- 生活需要分配有限的能源资源,以最大限度地从稀缺的机会中获益.
- 经济理论建议通过奖励效用减去努力不实用性来优化选择.
- 努力无用性的减法模型需要进一步测试其能够考虑经验依赖的权衡的能力.
研究的目的:
- 为了测试非人类灵长类动物 (Macaca mulatta) 努力无用性的减法模型.
- 研究经验如何影响奖励-努力的权衡.
- 开发和验证一个依赖于参考的努力不实用性模型.
主要方法:
- 二进制选择任务具有不同的奖励数量和体力.
- 随机效用建模以估计奖励效用和努力无用性.
- 减法,抛物线和指数努力折扣模型的比较.
主要成果:
- 减去力度模型提供了比其他模型更好的样本外预测.
- 努力的不实用性取决于先前对有努力的选项的经验.
- 一个依赖于参考的努力不实用性模型解释了经验后增加的努力支出.
结论:
- 子通过减去主观的努力成本来降低奖励,这与学习的预期努力相对.
- 主观的努力成本取决于背景和经验.
- 精确测量主观努力成本对于理解基于努力的决策的大脑机制至关重要.
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