孕产妇教育和产前吸烟与青少年执行功能的关联被遗传学大大混
Lucas C Perry1, Nicolas Chevalier1, Michelle Luciano1
1School of Philosophy, Psychology, and Language Sciences, University of Edinburgh.
Developmental psychology
|January 21, 2025
概括
执行功能,特别是空间工作记忆,在很大程度上是遗传的,不受共享环境的影响. 这一发现凸显了在发育心理学中对遗传敏感研究设计的需要.
科学领域:
- 行为遗传学 行为遗传学
- 发展心理学 发展心理学
- 神经科学是一个神经科学.
背景情况:
- 双胞胎研究表明,青少年执行功能 (EF) 的遗传性很高,共同环境影响最小.
- 发展研究表明EF对环境的影响很大,造成了矛盾.
- 潜在的解释包括在发育研究中的遗传混或在双胞胎研究中低估了共享环境.
研究的目的:
- 通过使用遗传敏感设计,研究对执行功能的遗传和环境贡献.
- 调和双胞胎和发育研究关于执行职能遗传性的相互矛盾的发现.
- 检查遗传学在执行功能与环境因素 (如母亲教育和产前吸烟) 之间的关联中的作用.
主要方法:
- 利用了来自千一代队列的遗传和表型数据 (5,939名参与者,4,827名母亲,2,903名父亲).
- 采用双变异的全基因组复杂特征分析 (GCTA) 来评估遗传和环境影响.
- 使用空间工作记忆 (SWM) 任务和剑桥博任务评估执行功能.
主要成果:
- 单核酸多态 (SNP) 效应显著预测了SWM与母亲教育/产前吸烟之间的关联.
- 对于SWM,没有发现显著的间接遗传效应 (遗传培养).
- 剑桥博任务 (热执行函数) 与SWM (冷执行函数) 不同,没有显著的SNP遗传性.
结论:
- 空间工作记忆,执行功能的组成部分,主要是具有最小共同环境影响的遗传特征,支持双胞胎研究的发现.
- 在非遗传敏感的研究中,遗传混可能会增加对环境影响的估计.
- 对冷静的执行功能 (SWM) 的遗传影响可能不同于热的执行功能 (剑桥博任务).
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