弗林效应和65岁及以上美国人的认知能力下降
Yun Zhang1, Joseph Lee Rodgers2, Patrick O'Keefe3
1Program in Public Health, Renaissance School of Medicine, Stony Brook University.
Psychology and aging
|July 25, 2024
概括
美国老年人出生后的年龄表现出更高的认知功能和更慢的衰退,这表明弗林效应持续到老年. 这项研究强调了认知衰老中的队列差异.
科学领域:
- 老年学是一门学科.
- 认知神经科学 认知神经科学
- 公共卫生 公共卫生
背景情况:
- 弗林效应,即智商随着时间的推移而增加,已经得到了充分证实,但在老年人群中不太了解.
- 老龄化的认知衰退受到队列效应和医疗/人口因素的影响.
- 了解这些差异对于针对认知衰老的公共卫生倡议至关重要.
研究的目的:
- 为了比较两个美国老年人出生队伍之间的认知衰退率.
- 检查医疗和人口因素对认知衰老的影响.
- 调查弗林效应在老年人中的持续性.
主要方法:
- 利用了来自国家健康和衰老趋势研究 (2011-2019) 的数据.
- 采用混合效应模型来分析与出生年相比随时间的认知变化.
- 调整了包括性别,教育,种族/种族和健康状况在内的共变量.
主要成果:
- 晚出生队列 (2015) 与早期队列 (2011) 相比,在所有领域都表现出更高的认知功能.
- 每年出生年份的增加与更好的情节性记忆,定向和执行功能有关.
- 晚出生的个体在这些领域的认知衰退率较慢,性别/性别改变了效果.
结论:
- 弗林效应持续到老年,影响认知功能和衰退率.
- 晚期出生群体在认知功能和抗衰退能力方面表现出优势.
- 这些发现强调了考虑队列效应在理解认知衰老和开发干预措施方面的重要性.
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