To find out, Dr Christakis has forged links with some anthropologists.

为了找出答案，Christakis博士已经和一些人类学家取得联系。

Dr Christakis used what is known as a public-goods game for his experiment.

Christakis博士在这个实验中采用称为" 公共利益" 的游戏。

Dr Christakis arranged for a collaboration-testing game to be played over the web, with many participants.

Christakis博士在网上安排了一场多人参与的实验测试游戏。

But a paper published this week in the Proceedings of the National Academy of Sciences by Nicholas Christakis and his colleagues at Harvard has changed that.

但在这周，哈佛大学Nicholas Christakis和他的同事在" 国家科学院院刊" 上发表的论文改变了这个状况。