Scientists studying wild vervet monkeys in South Africa found that the animals were better able to learn a task when it was demonstrated by a female. The team from the University of Neuchatel, Switzerland, compared the animals' responses to those of a simple box-opening task demonstrated by males.

科學家在南非研究野生長尾猴的時候發現，當雌性動物做示范時，其它觀摩動物能夠更好地完成學習任務。瑞士 Neuchatel 大學的研究小組在這個項目中通過讓雄性猴子和雌性猴子分別示范一個簡單的開瓶蓋的任務，比較了動物對主導雄性或雌性猴子的反應。