Genetic and environmental structure of individual differences in hand, foot, and ear preferences: A twin study.
Genetic and environmental structure of individual differences in hand, foot, and ear preferences: A twin study.
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手、足和耳朵偏好个体差异的遗传和环境结构：一项双胞胎研究。
DOI：
10.1080/1357650x.2013.790396
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
J.
中科院分区：
文献类型：
--
作者：
Suzuki;K. & Ando;J.
最近的大样本研究表明，手部偏好具有中等的遗传性。然而，很少有人知道横向偏好的遗传和环境因素。我们采用双胞胎设计研究，研究了手、脚和耳朵偏好的遗传和环境因素。对双胞胎参与者（N=956）进行横向偏好问卷调查。横向偏好的表型相关矩阵计算单卵双胞胎和双卵双胞胎对，并进行Cholesky分解计算添加剂的遗传和独特的环境相关矩阵。每个遗传和环境相关矩阵的Promax旋转因子分析得到6个遗传因子和4个环境因子。这些因素的因子加载模式表明，手和脚的横向活动受到不同的遗传因素。相比之下，四个环境因素中的每一个都主要与手，脚或耳朵偏好相关。这些结果表明，横向偏好的遗传结构可能比环境结构更复杂。特别是，手的偏好可能是多方面的遗传因素。
Recent studies with large sample size have reported moderate heritability of hand preference. However, little is known about genetic and environmental factors for lateral preference. We examined the genetic and environmental factors for hand, foot, and ear preferences using a twin design study. A lateral preference questionnaire was administered to twin participants (N=956). Phenotypic correlation matrices of lateral preferences were computed for monozygotic and dizygotic twin pairs, and were subjected to Cholesky decomposition to compute additive genetic and unique environmental correlation matrices. Promax rotation factor analysis of each genetic and environmental correlation matrix yielded six genetic and four environmental factors. Factor-loading patterns for these factors indicated that hand and foot lateral activities were affected by different genetic factors. By contrast, each of the four environmental factors was mainly associated with hand, foot, or ear preference. These results suggest that the genetic structure for lateral preference may be more complex than the environmental structure. In particular, hand preference may be multidimensional in terms of genetic factors.