Hörster W, Ettlinger G
Neuropsychologia. 1985;23(3):411-3. doi: 10.1016/0028-3932(85)90027-2.
Seventy-eight rhesus monkeys spontaneously using the left hand learnt a tactile discrimination task in significantly fewer trials than 77 monkeys using the right hand; but 82 monkeys without consistent preferences learnt significantly faster than either group with consistent preferences.
78只自发使用左手的恒河猴学会一项触觉辨别任务所需的试验次数明显少于77只使用右手的恒河猴；但82只没有固定偏好的猴子比任何一组有固定偏好的猴子学得都快得多。
