年龄和认知能力:使用它或失去它
Eric A Hanushek1,2,3,4, Lavinia Kinne5,6,7, Frauke Witthöft8
1Hoover Institution, Stanford University, Stanford, CA 94305, USA.
Science advances
|March 5, 2025
概括
成年人的认知能力在40多岁时得到改善,然后下降,特别是那些技能使用较低的人. 终身学习和参与是保持认知能力随着年龄增长的关键.
科学领域:
- 老年学是一门学科.
- 认知心理学 认知心理学
- 成人教育 成人教育.
背景情况:
- 横截面研究表明,认知能力在30岁时会下降,这引发了人们对老龄化人口的担忧.
- 年龄驱动的技能丧失威胁到社会人力资本.
- 纵向数据对于准确评估年龄技能概况至关重要.
研究的目的:
- 通过分析识字和算法的个体变化来估计实际的年龄技能概况.
- 为了将年龄效应与队列效应分开,并纠正测量错误.
- 确定影响成年人一生的认知技能变化的因素.
主要方法:
- 使用了成人能力国际评估计划 (PIAAC-L) 的德国纵向组件.
- 在3.5年后,重新测试了一大批成年人代表性样本.
- 采用统计方法来隔离年龄的影响,并考虑回归平均值.
主要成果:
- 平均认知技能,包括识字和算术,在40多岁中期增加,然后下降.
- 老年人的技能下降主要观察到低于平均水平的技能使用人群.
- 高技能使用的白领,高等教育的工人表现出持续的技能改进超出了他们的四十岁.
- 女性在年龄较大时经历了更大的技能损失,特别是在数学的方面.
结论:
- 认知能力在30岁时不会普遍下降;他们可以在中年时得到改善.
- 积极参与和持续学习对于维持和提高整个成年期的认知技能至关重要.
- 社会政策应鼓励终身学习,以减轻老龄人口的认知衰退,特别是弱势群体.
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