We have also found that about 2% of undergraduates we studied are pure non-cooperators. When they have an opportunity to share money with a stranger who has trusted him or her, non-cooperators keep all the money rather than share the largess.
我们还发现参加实验的大学生中有2%是纯粹的不合作者。当有机会和信任他（她）的陌生人分享金钱时，不合作者们独占所有的钱，而不与他人分享。在我们的实验室里对这些人的专用名词是“私生子”。