晚年生活中的认知脱差:来自1936年洛西安出生队列的纵向发现
Joanna E Moodie1, Janie Corley1, Ian J Deary1
1Lothian Birth Cohorts, Department of Psychology, The University of Edinburgh, Edinburgh, United Kingdom.
概括
认知脱差,即认知技能随着年龄的增长而变得更加相互关联,在1936年洛西安出生队列中观察到. 这个过程密切跟踪了老年人的认知衰退.
科学领域:
- 认知神经科学是一种认知神经科学.
- 老年学是指老年学的学科.
- 心理测量 心理测量 心理测量
背景情况:
- 脱差异化假设认为,在老年成人时,认知技能之间的相互关系增加.
- 了解衰老中的认知变化对于公共健康和个人福祉至关重要.
研究的目的:
- 调查1936年洛西安出生队列 (LBC1936) 中认知脱差的证据.
- 检查随着时间的推移认知脱差和认知衰退之间的关系.
主要方法:
- 从5个波段 (70-82岁) 中对LBC1936的418名参与者的纵向认知数据进行分析.
- 利用单级和层次结构方程模型来评估一般认知功能 (g) 和认知领域.
- 检查了认知分化和分散的群体层面和个人层面的测量.
主要成果:
- 13个认知测试所占的一般认知功能 (g) 差异在波段内从25%增加到36%.
- 在群体层面的认知分化与认知衰退有很强的相关性 (r = -0.991,p = 0.001).
- 流体认知领域汇聚,而结晶能力对g的影响随着时间的推移而减少,这表明脱差.
结论:
- 一般认知功能 (g) 的纵向建模必须考虑到其随时间变化的组成.
- 需要进一步的研究来澄清认知差异化和脱差异化的有效性,决定因素,机制和寿命影响.
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