Karev G B
Department of Biology, Medical Institute of Varna, Bulgaria.
Anthropol Anz. 1993 Mar;51(1):69-76.
Arm folding and hand clasping have been analysed in 2100 Bulgarians, 1050 of either sex. In both traits, significant preponderance of the left type over the right one was revealed. Also, in both traits the excess of the left type is more pronounced in females but this sexual heterogeneity is significant only in the arm folding. Examination of the possible association between arm folding and hand clasping showed the independence between both asymmetries. On the other hand, the comparison between both sexes concerning distributions of the four possible combinations of types revealed statistically significant sexual dimorphism in this respect. Two kinds of dermatoglyphic asymmetry, directional and relative, have been investigated and comparisons have been made between right and left claspers and between right and left folders, each sex separately and finger-by-finger. Although statistically significant differences are not numerous, they have been discussed from the point of view of the importance of relationships between functional and morphological asymmetries.
对2100名保加利亚人（男女各1050名）的双臂交叉和双手交叉进行了分析。在这两种特征中，均发现左型明显多于右型。此外，在这两种特征中，左型在女性中更为明显，但这种性别差异仅在双臂交叉中具有统计学意义。对双臂交叉和双手交叉之间可能的关联进行检查发现，这两种不对称现象相互独立。另一方面，就四种可能类型组合的分布对两性进行比较，结果显示在这方面存在统计学上显著的性别二态性。研究了两种皮纹不对称，即方向性不对称和相对性不对称，并分别对每种性别，逐指比较了右手和左手交叉者以及右手和左手双臂交叉者。虽然具有统计学意义的差异并不多，但已从功能和形态不对称之间关系的重要性角度进行了讨论。
