I won't talk about their experiments, but I just want to mention one by a Harvard psychologist Ellen Langer.

我不想详述他们的实验,但我想谈谈,由哈佛大学心理学家爱伦·兰格做的实验

耶鲁公开课 - 金融市场课程节选

One of the best descriptions I've ever read of why slavery persisted, of why people defended it, and why people went to war for it, came before the war, in 1857, in a speech by the African-American woman, novelist, writer, poet Frances Ellen Watkins Harper.

我曾读到的一段比较精彩的论述,关于为什么奴隶制度留存了下来,为什么人们为其辩护,为其而战,在1857年,战争前夕,在一个非裔美国女人的演讲中,她是小说家兼作家兼诗人,弗朗斯·伊莲·瓦特金·哈伯

耶鲁公开课 - 美国内战与重建课程节选

Both of them done by our very own Ellen Langer.

两项研究都由本校的Ellen，Langer完成。

哈佛公开课 - 幸福课课程节选