从不对称行为特征探讨白马人的族源

Origin of Baima people in terms of behavioral traits of lateral functional dominance

目的：研究白马人的族源问题。方法：采用随机抽样方法调查白马人和羌族的6项不对称行为特征。结果：白马人的利手出现率、羌族的起步类型出现率存在性别间差异。白马人交叉臂左型率为55.7%，在我国族群中处于较高水平，交叉腿左型率为17.0%，起步类型左型率为39.1%，在我国族群中处于较低水平。羌族扣手左型率为47.8%，在我国族群中处于较高水平。聚类分析结果显示，白马人的不对称行为特征与羌族比较接近。结论：在6项不对称行为特征方面，支持白马人并非藏族的观点，并提示白马人与羌族的族源关系比较接近。

Objective： To analyze the origin of Baima people. Methods： Stratified random sampling was used to investigate the 6 behavioral traits of lateral functional dominance in Baima and Qiang people. Results： There were sexual difference in L-type percentages of handedness of Baima people and stride type of Qiang people. In Baima people, the percentage of L-type on arm folding was 55.7%, which was relatively high in the ethnic groups in China. The percentage of L-type on leg folding was 17.0% and the percentage of L-type on stride type was 39.1%, which were low in the ethnic groups in China. In Qiang people, the percentage of L-type on hand clasping was 47.8%, which was high in the ethnic groups in China. The results of cluster analysis showed that behavioral traits of lateral functional dominance of Baima people was close to Qiang people. Conclusion： Baima people aren＇t Tibetans in terms of behavioral traits of lateral functional dominance, and they have close relationship with Qiang people.