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完整的延迟折扣,但在经验性任务期间在神经性厌食症中做出更优的奖励决策
Fabio Bernardoni1, Joseph A King1, Maria Seidel1
1Translational Developmental Neuroscience Section, Division of Psychological and Social Medicine and Developmental Neurosciences, Faculty of Medicine, Technische Universität Dresden, Dresden, Germany.
Psychiatry and clinical neurosciences
|February 18, 2026
概括
患有神经性厌食症 (AN) 的人在游戏化任务中没有改变延迟折扣. 然而,在最佳情况下,他们更喜欢更接近的奖励,这表明在AN中奖励的努力增加了.
科学领域:
- 神经科学是一个神经科学.
- 心理学 心理学 心理学
- 行为经济学是一种行为经济学.
背景情况:
- 患有神经性厌食症 (AN) 的人经常表现出延迟的满足感,放弃了瘦身的即时奖励.
- 传统的延迟折扣任务在AN中显示微妙或不存在的效果.
- 经验任务可能更好地揭示了AN的改变决策.
研究的目的:
- 用游戏化的体验任务来调查神经性厌食症中的延迟折扣.
- 确定AN是否与随着时间的推移而改变的奖励估值有关.
- 在决策中区分偏好和敏度.
主要方法:
- 80名急性体重不足的女性和80名年龄相匹配的健康对照 (HC) 完成了一个游戏化的选择任务.
- 参与者做出了涉及奖励大小和延迟/距离的决定.
- 信号检测理论分析了偏差和敏度的决策模式.
主要成果:
- 没有观察到延迟贴现参数的显著群体差异.
- 有AN的参与者喜欢更小,更接近的奖励,当这种选择是最佳的.
- 这种模式并不是由奖励偏差或增强的选择敏度来解释的.
结论:
- 经验任务没有显示在AN中减少延迟折扣.
- 结果表明,在AN中,增加了对任务的投入和为获得奖励而付出的努力.
- 这与AN更愿意付出努力的概念一致.
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