Separating identical from fraternal twins.
Separating identical from fraternal twins.
复制标题
将同卵双胞胎与异卵双胞胎分开。
DOI：
10.1001/archpsyc.1973.04200040021004
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发表时间：
1973
影响因子：
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通讯作者：
W. Pollin
中科院分区：
文献类型：
--
作者：
D. Cohen;E. Dibble;J. Grawe;W. Pollin
155对双胞胎的母亲完成了一份关于孩子之间身体相似程度的问卷，以及他们是否和谁混淆了。对这对双胞胎进行血型鉴定以确定其卵性。父母对同卵双胞胎和异卵双胞胎的看法是非常不同的。判别函数分析产生了明确的区分兄弟和相同的群体之间的接合性分配的问题和接合性确定的血型的回答之间的98%的协议。这种方法来分配合子对双胞胎可能是有价值的流行病学和其他研究双胞胎。这项研究的结果对许多比较同卵双胞胎和异卵双胞胎的行为遗传学研究的假设提出了质疑：两种类型双胞胎的生活经历具有可比性。这种假设是计算遗传力系数的基础，也与比较配对内相关性有关，是值得怀疑的。被父母、家人和陌生人弄糊涂可能会有心理上的影响。
Mothers of 155 sets of twins completed a questionnaire about the degree of physical similarity between the children and if, and by whom, they were confused. The twins were blood typed to determine zygosity. Parental perceptions of identical and fraternal twins were extremely different. A discriminant function analysis produced clear differentiation between the fraternal and identical groups with 98% agreement between zygosity assigned by the responses to the questions and zygosity determined by blood typing. This approach to assigning zygosity to twin pairs may be of value in epidemiological and other studies of twins. The results of this study raise questions about an assumption that underlies many behavioral genetic investigations comparing identical and fraternal twins: that the life experiences of both types of twins are comparable. This assumption, basic to calculation of heritability coefficients and relevant to comparison of intrapair correlations, is questionable. There probably are psychological implications of being confused by one's parents, family, and strangers.