决策中的年龄相关差异:在老年人中,证据的积累更为渐进
Eva Marie Wieschen1, Aalim Makani2, Stefan T Radev3
1Department of Psychology, Ruprecht-Karls-Universitaet, Heidelberg, Germany.
Experimental aging research
|July 29, 2023
概括
年长的成年人表现出比年轻的成年人慢的认知处理. 这项研究表明,老年人对证据积累的"跳跃性"较小,这表明决策过程中的差异.
科学领域:
- 认知心理学 认知心理学
- 神经科学是一个神经科学.
- 老年学是指老年学的学科.
背景情况:
- 与年轻人相比,老年人通常在认知任务中表现出较慢的响应时间.
- 扩散模型解释了与年龄相关的减速是谨慎和较慢的非决策过程,而不是信息积累速度.
- 莱维飞行模型是扩散模型的延伸,通过允许更大的证据积累跳跃来解释响应时间变化.
研究的目的:
- 用莱维飞行模型研究证据积累的"跳跃性"与年龄相关的差异.
- 为了确定老年人与年轻人相比,是否表现出明显的证据积累模式.
主要方法:
- 对年轻和年长的成年参与者 (N=40个小组) 进行了字母-数字歧视任务.
- 莱维飞行模型被用来分析任务期间证据积累的动态.
主要成果:
- 较年长的成年人表现出比年轻的成年人更渐进,更少的"跳跃"的证据积累模式.
- 这一发现表明,决策过程的随机性质与年龄相关的差异.
结论:
- 认知衰老与证据积累的跳跃性差异有关,老年人显示的变化较小.
- 这些结果有助于理解与年龄相关的认知减速和决策动态背后的机制.
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