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降低子对可能的食物增强的折扣
Luís Oliveira1, Leonard Green1, Joel Myerson1
1Department of Psychological & Brain Sciences, Washington University, St. Louis, MO, USA.
Journal of the experimental analysis of behavior
|July 15, 2025
概括
子系统地值了概率性的食物奖励,因为收到它们的几率增加了. 强化剂的数量没有影响这种概率折扣行为.
科学领域:
- 行为经济学是一种行为经济学.
- 动物的认知能力动物的认知能力
- 在不确定性下做决定
背景情况:
- 了解动物如何看重不确定的奖励对于行为经济学至关重要.
- 以前的研究主要集中在延迟增强剂上,对非人类动物中的概率增强剂的关注较少.
研究的目的:
- 为了研究使用并发链程序在子中的概率折扣函数.
- 为了确定子对食物增强剂的主观价值是否随着收到食物的可能性增加而下降.
- 检查强化剂量对概率折扣的影响.
主要方法:
- 两个实验使用了会话内的并发链程序和会话间的调整金额程序.
- 实验1:子在一个小的,确定的强化器和一个更大的,概率的强化器之间做出选择.
- 实验2:子在两种概率强化剂 (较小/更可能与较大/不太可能) 之间进行选择.
主要成果:
- 主观价值随着反收到强化剂的几率增加而系统地下降,不管其中一个或两个选项是否都是概率性的.
- 超波罗的贴现函数准确地描述了观察到的概率贴现数据.
- 没有发现强化剂量对概率折扣的程度有显著影响.
结论:
- 子表现出强大的概率折扣,类似于他们如何折扣延迟的奖励.
- 这些发现支持过度推算模型对非人类动物中的概率学强化剂的概括性.
- 这项研究提供了对非人类动物的概率折扣函数的第一次评估,其中获得的概率与编程的概率相匹配.
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