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使用概率奖励方案进行任务切换
Markus Janczyk1, Ludwig Danwitz1, Kerstin Fröber2
1University of Bremen, Bremen, Germany.
Acta psychologica
|May 2, 2025
概括
参与者倾向于在收到奖励后重复任务,无论奖励概率如何,这表明在自愿的任务切换行为中,赢-停留,输-换班策略.
科学领域:
- 认知心理学 认知心理学
- 决策 决策 决策 决策
- 行为神经科学 行为神经科学
背景情况:
- 之前的研究链接奖励前景变化到任务切换行为.
- 增加奖励前景通常会提高认知灵活性和自愿切换率 (VSR).
- 在之前的任务中随机奖励往往导致较低的VSR,表明任务持久性.
研究的目的:
- 调查概率奖励方案对任务交换的影响.
- 检查高与低奖励概率如何影响自愿切换率 (VSR).
- 为了确定奖励历史是否影响交换成本.
主要方法:
- 三个实验涉及自愿和暗示的任务切换范式.
- 实施了概率奖励条件 (高与低奖励概率).
- 测量了自愿切换率 (VSR) 和切换成本.
主要成果:
- 参与者在获得奖励后表现出较低的VSR,无论奖励概率如何 (赢-停留,输-换班策略).
- 奖励历史没有影响交换成本,这表明保持了认知灵活性.
- 这些发现扩展了先前关于奖励前景过渡和任务切换的观察.
结论:
- 赢-停留,输-转移 (WSLS) 策略似乎在概率奖励环境中占主导地位,用于任务切换.
- 奖励历史影响任务重复,但不会影响切换的认知成本.
- 结果有助于理解决策策略和认知控制在不同的奖励意外情况下.
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