在37,495名荷兰双胞胎中使用手和23个早期生活特征
Veronika V Odintsova1,2, Jenny van Dongen1,2, Catharina E M van Beijsterveldt1
1Department of Biological Psychology, Vrije University Amsterdam, Amsterdam, The Netherlands.
概括
这项研究调查了影响双胞胎手性早期生活因素. 虽然一些关联,如男性性别和较低的妊娠年龄与非右撇子复制,但许多单元发现没有,突出显示了右撇子发展的复杂性.
科学领域:
- 发展心理学 发展心理学
- 行为遗传学 行为遗传学
- 人类生物学 人类生物学
背景情况:
- 之前对单身子的研究表明,早期生活因素与手性之间存在联系.
- 在双胞胎研究中复制这些关联是不一致的.
- 了解手性决定因素对于发育研究至关重要.
研究的目的:
- 在一个大型双胞胎队列中,检查23个早期生活特征和手性之间的关联.
- 为了测试双胞胎中已知的单元基于手性的协会的复制.
- 调查与双手性相关的双胞胎特定因素 (zygosity,chorionicity,出生顺序).
主要方法:
- 对37,495名5岁双胞胎进行了分析.
- 使用三种定义来评估手性:左撇子 (LH),混合手 (MH) 和非右撇子 (NRH).
- 统计检查了23个早期生活特征,包括性别,出生体重,妊娠年龄,出生季节,母乳养和双胞胎特定变量.
主要成果:
- 与单身成年人 (7.23%) 相比,双胞胎 (16.19%) 和他们的父母 (15.09%) 的非右撇子 (NRH) 患病率更高.
- 在双胞胎中复制的关联包括LH/NRH与父母的LH,男性性别和较低的妊娠年龄与NRH,以及LH与未被母乳养.
- 双手混合症 (MH) 与神经发育延迟和外部化问题有关;之前报告的其他关联没有复制,没有双胞胎特异性因素是显著的.
结论:
- 双胞胎的双手性发展显示了与早期生活因素的一些复制关联,但也显示了独特的模式.
- 该研究强调了为全面分析使用多手性定义的重要性.
- 研究结果表明,在不同的研究群体和方法中,存在有限数量的一致复制的关联.
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