布依族7项不对称行为特征的研究

Studies on 7 Behavioral Traits of Lateral Functional Dominance in Bouyei Nationality

对布依族的7项不对称行为特征(利手、扣手、叠臂、叠腿、利足、起步和利眼)进行了调查,结果显示:(1)7项指标在布依族中的出现率R型(右型)远高于L型(左型);(2)布依族中7项指标出现率均无性别间差异;(3)与蒙古族、朝鲜族、汉族、鄂温克族、鄂伦春族、达斡尔族、汉族等民族作比较,发现布依族各项指标L型出现率偏低,且扣手、叠臂、起步L型出现率和这6个民族存在极显著性差异,叠腿L型出现率除与鄂伦春族无差异外,与另外5个民族均有极显著性差异,其他指标与这6个民族基本不存在差异;(4)布依族扣手基因频率(%)为:A=0.1653,a=0.8347;布依族利手基因频率为:B=0.6990,b=0.3010;(5)统计分析了7项指标间的相关性,发现多数指标间存在相关性,部分指标相关极显著,且R-R型组合(右型-右型)的出现频率远高于L-L型组合(左型-左型)的出现频率.

A sample of 320 middle school students of Bouyei nationality was invested on 7 behavioral traits of lateral functional dominance (handedness, hand clasping,arm folding,leg folding,stride type,foot preference and eye preference) in Aug.,2003.The results indicated that: (1) The preference of the right type on 7 traits in Bouyei Nationality are much higher than that of left type; (2) There is no sexual difference in Bouyei nationality on 7 traits preference; (3) There is obvious difference between Bouyei nationality and other 6 nationalities on the preference of some traits,for example: hand clasping,arm folding,stride type, while others have no difference; (4) The L-type gene preference of handedness in Bouyei nationality is (0.301 0,)and the L-type gene preference of hand clasping is 0.165 3;(5) There is the higher correlation among the 7 traits; In each pair of the traits,the preference of R-R type (right-right type) is much higher than that of the L-L type(left-left type).