在儿童中期和青春期早期对Scarr-Rowe相互作用的多变量分析
Evan J Giangrande1, Christopher R Beam2, Sarah Carroll1
1Department of Psychology, University of Virginia, PO Box 400400, Charlottesville, VA 22904-4400, USA.
Intelligence
|July 21, 2025
概括
基因与环境的相互作用显著影响认知能力的遗传性. 高社会经济地位 (SES) 的环境对智力产生更强烈的遗传影响,特别是在童年和青春期.
科学领域:
- 行为遗传学 行为遗传学
- 发展心理学 发展心理学
- 心理测量 心理测量 心理测量
背景情况:
- 基因与环境相互作用 (GxE) 研究经常检查社会经济地位 (SES) 和认知能力.
- 以前的研究,主要是单变量和横截面的,表明较低的SES环境降低了认知能力的遗传性.
- 斯卡尔-罗威相互作用模型是理解这些GxE效应的关键框架.
研究的目的:
- 使用多变量和纵向模型研究社会经济地位 (SES) 和认知能力之间的基因环境相互作用 (GxE).
- 通过使用先进的建模技术,提高检测GxE效应的统计能力.
- 检查SES如何调节智能在整个发展过程中的遗传性.
主要方法:
- 利用了来自566对双胞胎的纵向数据 (路易斯维尔双胞胎研究),测量了7至15岁的认知能力.
- 应用多层次和潜在因子模型,用于对智力子测试成绩的横截面分析.
- 使用潜增长曲线模型来分析智商分数和GxE相互作用的纵向变化.
主要成果:
- 多变量方法显著增加了检测GxE相互作用的统计能力.
- 在大多数年龄段的横截面分析中观察到显著的GxE相互作用.
- 纵向分析显示,对于全尺度智商和性能智商拦截,有显著的GxE相互作用,但对于口头智商或智商变化遗传性而言没有.
结论:
- 基因与环境的相互作用显著影响认知能力的遗传性,特别是在平均智力水平上.
- 这些发现支持Scarr-Rowe相互作用假设,突出显示了SES各级的基因影响差异.
- 该研究强调了多变量和纵向设计在发展研究中准确捕捉复杂的GxE效应的重要性.
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