一群狒狒的自发手部使用情况和利手情况。

Spontaneous hand usage and handedness in a troop of baboons.

作者信息

Vauclair J, Fagot J

出版信息

Cortex. 1987 Jun;23(2):265-74. doi: 10.1016/s0010-9452(87)80036-9.

Abstract

Hand usage was studied in a troop of 18 Guinea baboons (10 adults and 8 young) for spontaneous activities. Handedness was determined by an analysis of unimanual activities and bimanual asymmetric activities. The distribution of preferential biases gave 5 right-handers and 2 left-handers, other subjects being ambidextrous. Main effects were age related: the strength of the preference was greater for adults than for young; moreover, bimanual activities performed by the adult group were more asymmetric than those realized by the subgroup of young. Laterality thus appears to develop during ontogeny in baboons.

摘要

研究了一群18只几内亚狒狒（10只成年狒狒和8只幼年狒狒）的自发活动中的手部使用情况。通过对单手活动和双手不对称活动的分析来确定利手情况。偏好偏向的分布显示有5只右利手和2只左利手，其他个体为双手并用。主要影响与年龄相关：成年狒狒的偏好强度大于幼年狒狒；此外，成年组进行的双手活动比幼年亚组进行的双手活动更不对称。因此，狒狒的偏侧性似乎在个体发育过程中逐渐形成。