学习偏见预测了在压力下获得恐惧,但不是认知灵活性
Kim M Caudwell1, Sara Baldini2, Gemma Calvezzi2
1Faculty of Health, Charles Darwin University, Darwin, Australia.
Physiology & behavior
|October 22, 2023
概括
通过概率选择任务 (PST) 测量强化和惩罚学习的个体差异,预测压力反应和认知灵活性. 压力会根据学习偏差对恐惧的获取产生不同的影响.
科学领域:
- 神经科学是一个神经科学.
- 心理学 心理学 心理学
- 行为科学 行为科学
背景情况:
- 在从强化与惩罚中学习方面存在个人差异.
- 多巴氨基系统调节这些学习偏差.
- 压力会对积极和消极反的反应产生不同的影响.
研究的目的:
- 调查概率选择任务 (PST) 的表现是否预测目标导向行为 (认知灵活性) 和在压力下恐惧的获取.
- 检查压力 (社会评估冷压力测试) 与学习偏差的相互作用.
主要方法:
- 两项研究包括26名和59名健康参与者.
- 参与者完成了概率选择任务 (PST) 和威斯康星州卡片排序测试 (WCST).
- 通过在压力因素 (社会评估冷压力测试) 中使用皮肤导电性反应来评估恐惧的获取.
主要成果:
- 在强化学习中表现出色的个体在压力下对非威胁性刺激的处理增加,与在避免惩罚方面表现出色的人不同.
- 压力会影响认知灵活性,但PST的表现并没有缓解这种影响.
- 无论压力如何,正面和负面的学习偏差都与WCST错误相关.
结论:
- PST对于理解强化学习和避免学习具有预测价值.
- 学习偏见和压力相互作用,影响恐惧的获取.
- 认知灵活性因压力而受损,并与学习偏见有关.
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