随机决策支持波动性环境的最佳食,并且受到焦虑的干扰
Alex Lloyd1,2, Ryan McKay3, Nicholas Furl3
1Clinical, Educational and Health Psychology, Psychology and Language Sciences, University College London, 26 Bedford Way, London, WC1H 0AP, UK. alexander.lloyd@ucl.ac.uk.
Cognitive, affective & behavioral neuroscience
|January 9, 2025
概括
青少年和成年人努力调整学习速度以适应环境波动. 相反,增加的决策可变性 (随机性) 有助于适应,尽管焦虑在波动条件下阻碍了这种能力.
科学领域:
- 认知科学 认知科学
- 发展心理学 发展心理学
- 神经科学是一个神经科学.
背景情况:
- 青春期是环境和社会发生重大变化的时期.
- 适应环境波动对于生存和食至关重要.
- 探索是适应不断变化的环境的关键认知能力.
研究的目的:
- 调查青少年是否比成年人更熟练地使用探索来适应环境波动.
- 用计算模型来描述在不稳定的环境中探索的机制.
- 为了测试青少年表现出更优的适应环境波动的学习率的假设.
主要方法:
- 采用食任务来模拟不稳定的环境.
- 一个经过充分验证的计算模型被用来分析勘探机制.
- 参与者包括青少年 (16-17岁) 和成年人 (24岁以上).
主要成果:
- 无论是青少年还是成年人,他们的学习速度对环境波动的调整都不够理想.
- 参与者的决策可变性 (随机性) 更接近于最佳强化学习 (RL) 剂的适应.
- 高度的随机性促进了环境变化的发现,但焦虑损害了这种适应能力.
结论:
- 与预期相反,在这种情况下,学习率调整不是适应波动的主要机制.
- 增加的随机性,而不是学习速度调节,似乎是适应不稳定的环境的关键.
- 焦虑在过渡和波动时期对青少年的适应性决策产生负面影响.
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