概率和框架对风险决策中的违约效应的影响
Joshua Lanier1, Di Wang2, Yusha Xie3
1School of Social Sciences, Nanyang Technological University, 48 Nanyang Ave, Singapore, 639818, Singapore. jlanier84@gmail.com.
Scientific reports
|September 29, 2025
概括
人们在做出风险决策时往往会坚持默认选项. 较低的胜利概率显著增加了这种默认效应,而不是将结果视为损失.
科学领域:
- 行为经济学是一种行为经济学.
- 认知心理学 认知心理学
- 决策科学 决策科学 决策科学
背景情况:
- 默认效应,或倾向于偏好预设选项,是决策过程中已有充分证据的现象.
- 了解调节默认效应的因素对于设计有效的选择架构至关重要,特别是在不确定的环境中.
研究的目的:
- 调查概率和结果框架如何影响风险决策中的默认效应.
- 确定概率与框架作为默认选择依赖的调节者的相对重要性.
主要方法:
- 进行了两项受控实验,其中317名参与者在概率等同的彩票中重复选择.
- 一个投注选项在试验中始终被突出显示为默认选择.
- 赢得概率 (25%与75%对比) 和结果框架 (获利与损失) 被系统地操纵.
主要成果:
- 观察到一个强大的默认效应,38-39%的参与者选择默认选项,而25%的随机基准选择默认选项.
- 较低的胜利概率 (25%) 持续扩大了对默认选项的依赖.
- 损失框架仅在一项研究中增加了默认选择,这表明概率是一个更可靠的调节器.
结论:
- 胜利的概率是默认效应大小的更强的决定因素,而不是结果框架.
- 认知轻松和逃避责任似乎是驱动默认依赖的关键心理机制.
- 这些发现对在涉及不确定性的现实场景中选择架构设计有影响.
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