内蒙古18个人群7项不对称行为特征的聚类分析与主成分分析

Cluster Analysis and Principal Component Analysis on 7 Behavioral Traits of Lateral Functional Dominance of 18 Populations in Inner Mongolia

对内蒙古7个民族18个人群7项不对称行为特征(利手、扣手、叠臂、叠腿、起步、利足、利眼)的调查结果进行了聚类分析和主成分分析.聚类分析结果显示:18个人群可以分成4个组,汉回朝混合组、西部蒙汉混合组、中东部蒙古族组、东部少数民族组,体现了民族性、地域性及民族间的基因交流特点.主成分分析结果显示:18个人群分布具有明显的地域性,内蒙古东部人群与西部人群在不对称行为特征方面的差异主要体现在利足、叠腿。

Cluster analysis and principal component analysis were made by data of seven behavioral traits of lateral functional dominance （handedness, hand clasping, arm folding, leg folding, stride type, foot preference and eye preference） of 18 populations from seven nationalities in Inner Mongolia. The results of cluster analysis showed that these 18 populations could be divided into four groups ： Han, Hui and Korea mixed group in center-west area, Mongol and Han mixed group in west, Mongol group in center-east area, Minorities group in east. The way of clustering indicated the features of the nationality and the region and genetic exchanges between different nationalities. According to principle component analysis, PC Ⅰ stood for stride type and leg folding, PCⅡ stood for foot preference and hand clasping, PCⅢ eye preference and handedness. In the coordinate of PC I and PC Ⅱ, evident feature of the region could be found in the distribution of 18 populations. The main differences between the west and the east in Inner Mongolia occurred to PC I and PC Ⅱ.