Hayashi Chisato, Mikami Hiroshi, Nishihara Reiko, Maeda Chiho, Hayakawa Kazuo
Department of Community Health Nursing, Graduate School of Nursing, Osaka City University, Osaka, Japan.
Department of Health Promotion Science, Faculty of Health Sciences, Graduate School of Medicine, Osaka University, Osaka, Japan.
Twin Res Hum Genet. 2014 Feb;17(1):27-37. doi: 10.1017/thg.2013.83. Epub 2013 Dec 13.
This study investigated the relationship between twin language, twins' close ties, and social competence in a prospective longitudinal study. We hypothesized that twins whose tie is close would be more likely to develop a twin language, and these twins would be less likely to develop social competence. In addition, we hypothesize that some environmental factors, such as having an older sibling, preschool attendance, zygosity, and sex are also related to twin language, twins' close ties, and social competence. At baseline in 1999 a mailed questionnaire survey was conducted, and a follow-up questionnaire was distributed in 2004 among 958 mothers. As a result, 516 respondents returned the questionnaire (53.9%). In this study, we used 261 twin pairs aged from 6 to 12 years (school-age children) for analysis, excluding those with missing values. In the present study, we found that zygosity and sex were associated with twins' close ties. Having an older sibling and preschool attendance did not affect the twins' close tie, twin language, or social competence. One of the most important findings was that social competence was not affected directly by twins' close tie, but was affected when a twin language was found.
本研究在一项前瞻性纵向研究中调查了双胞胎语言、双胞胎之间的紧密联系与社交能力之间的关系。我们假设关系紧密的双胞胎更有可能发展出双胞胎语言，而这些双胞胎发展社交能力的可能性较小。此外，我们假设一些环境因素，如拥有哥哥姐姐、上幼儿园、同卵或异卵双生以及性别，也与双胞胎语言、双胞胎之间的紧密联系和社交能力有关。1999年基线时进行了邮寄问卷调查，2004年向958名母亲发放了后续问卷。结果，516名受访者回复了问卷（回复率为53.9%）。在本研究中，我们使用了261对年龄在6至12岁的双胞胎（学龄儿童）进行分析，排除了有缺失值的双胞胎。在本研究中，我们发现同卵或异卵双生以及性别与双胞胎之间的紧密联系有关。拥有哥哥姐姐和上幼儿园对双胞胎之间的紧密联系、双胞胎语言或社交能力没有影响。最重要的发现之一是，社交能力并非直接受双胞胎之间紧密联系的影响，而是在发现存在双胞胎语言时受到影响。
