Orey Byron D'Andra, Park Hyung
Department of Political Science, Jackson State University, Jackson, MS 39217, USA.
Twin Res Hum Genet. 2012 Feb;15(1):71-3. doi: 10.1375/twin.15.1.71.
The preponderance of research on the study of ethnocentrism has primarily attributed such attitudes to learned behavior. The research here advances the argument that both socialization and genetic inheritance contribute to the development of ethnocentric attitudes and behavior. This analysis employs the Minnesota Twins Political Survey data consisting of 596 complete twin pairs. Using the classical twin design, we employed structural equation modeling to model the covariance of twins in regards to additive genetic effects, shared environmental effects, and unique environmental effects (i.e., the classic ACE model). The findings reveal that genetic inheritance is significant in explaining the variance in genetic attitudes. Specifically, genetic inheritance explains 18% of the variance, with the overwhelming 82% being explained by the unique environment.
关于种族中心主义研究的大多数主要将这种态度归因于习得行为。此处的研究提出了这样一种观点，即社会化和基因遗传都有助于种族中心主义态度和行为的形成。该分析采用了明尼苏达双胞胎政治调查数据，其中包括596对完整的双胞胎。使用经典双胞胎设计，我们采用结构方程模型来模拟双胞胎在加性遗传效应、共享环境效应和独特环境效应方面的协方差（即经典的ACE模型）。研究结果表明，基因遗传在解释遗传态度的差异方面具有重要意义。具体而言，基因遗传解释了18%的差异，而绝大多数82%由独特环境解释。
