行动启动和惩罚的学习从童年到青春期有所不同,而奖励的学习保持稳定
Ruth Pauli1, Inti A Brazil2, Gregor Kohls3,4
1Centre for Human Brain Health, School of Psychology, University of Birmingham, Birmingham, UK. r.pauli@bham.ac.uk.
Nature communications
|September 14, 2023
概括
青春期显示稳定的奖励学习,但行动启动偏差下降. 提高奖励反应能力可能源于行动启动,而不是增强的学习.
科学领域:
- 发展心理学是发展心理学.
- 神经科学是一个神经科学.
- 计算建模计算建模
背景情况:
- 青春期与增加奖励学习和冲动性有关.
- 区分奖励学习与行动启动偏见对于理解发展变化至关重要.
- 以前的研究往往缺乏样本大小或方法来评估这两个因素.
研究的目的:
- 调查奖励和惩罚学习中的与年龄相关的差异.
- 量化儿童和青少年的行动启动偏见.
- 探索青少年时期奖励反应能力提高背后的机制.
主要方法:
- 在学习任务上利用计算建模.
- 分析了来自大型国际样本 (N=742,年龄9-18岁) 的数据.
- 检查了奖励和惩罚的学习率,以及行动启动偏见.
主要成果:
- 惩罚学习率随着年龄的增长而增加.
- 奖励学习率在整个发展期保持稳定.
- 随着年龄的增长,行动启动偏差显著下降.
- 当使用青春期阶段作为指标时,结果是一致的.
结论:
- 青少年的奖励反应性可能更好地通过行动启动的差异来解释.
- 提升奖励学习并不是青少年奖励敏感性的主要驱动因素.
- 抑制控制中的发育变化会影响与奖励相关的行为.
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