Hopkins W D, Washburn D A, Rumbaugh D M
Department of Psychology, Georgia State University, Atlanta 30303.
J Comp Psychol. 1989 Mar;103(1):91-4. doi: 10.1037/0735-7036.103.1.91.
In a recent article MacNeilage, Studdert-Kennedy, and Lindblom (1987) proposed that nonhuman primate handedness may be contingent on the specific task requirements with visual-spatial tasks yielding left-hand preferences and fine motor tasks producing right-hand preferences. This study reports hand preferences in the manipulation of joysticks by 2 rhesus monkeys (Macaca mulatta) and 3 chimpanzees (Pan troglodytes). Reach data were also collected on these same subjects and served as a basis for comparison with preference data for manipulation of the joystick. The data indicated that all 5 subjects demonstrated significant right-hand preferences in manipulating the joystick. In contrast, no significant hand preferences were found for the reach data. Reaction time data also indicated that the right hand could perform a perceptual-motor task better than the left hand in all 5 subjects. Overall, the data indicate that reach tasks may not be sensitive enough measures to produce reliable hand preferences, whereas tasks that assess fine motor control produce significant hand preferences.
在最近的一篇文章中，麦克尼尔奇、斯塔德特-肯尼迪和林德布洛姆（1987年）提出，非人类灵长类动物的用手偏好可能取决于特定的任务要求，视觉空间任务会产生左手偏好，而精细运动任务则会产生右手偏好。本研究报告了2只恒河猴（猕猴）和3只黑猩猩（黑猩猩）在操纵操纵杆时的用手偏好。还收集了这些相同受试者的伸手数据，并作为与操纵杆偏好数据进行比较的基础。数据表明，所有5只受试者在操纵操纵杆时都表现出显著的右手偏好。相比之下，伸手数据未发现显著的用手偏好。反应时间数据还表明，在所有5只受试者中，右手执行感知运动任务的能力优于左手。总体而言，数据表明伸手任务可能不够敏感，无法产生可靠的用手偏好，而评估精细运动控制的任务则会产生显著的用手偏好。
