广播电视英语短句 第 279 课：囚徒困境-1

Two recent studies have found that punishment is not the best way to influence behavior. 近期有两项研究表明惩罚对于行为干预来说并不是最好的方式。

One showed that adults are much more cooperative if they work in a system based on rewards. 其中一个说明成年人在基于奖励的环境下工作会更加协作。

Researchers at Harvard University in the United States and the Stockholm School of Economics in Sweden did the study. 位于美国的哈佛大学和瑞典的斯德哥尔摩经济学校进行了这项研究。

They had about two hundred college students play a version of the game known as the Prisoner's Dilemma . 他们让200名大学生玩一种Prisoner's Dilemma（囚徒困境）的游戏。

The game is based on the tension between the interests of an individual and a group. 这款游戏基于个人和集体之间的利益的关系。