And the top answer that was 82% was the Internet, something like 60% said they thought the availablity of guns was a significant factor in the Columbine's shooting.

高达82%的人认为是因为网络，约有60%的人认为,枪支的使用是一个重要因素,造成了这起枪杀案。

麻省理工公开课 - 媒体、教育、市场课程节选

And developmental psychologists use many ingenious methods to try to pull these apart and try to figure out what are the basic components of human nature.

发展心理学家们使用了许多巧妙的方法,试图将这些因素分开,试图找出人性的基本成分,究竟是什么

耶鲁公开课 - 心理学导论课程节选