The children were chosen at random but the children who were described as showing-- as expected to show a jump in IQ, in fact, did show a jump in their IQ scores and this isn't magic.

这些孩子都是随机挑选的,那些被说成很聪明的孩子-,老师期望他们的智力会有大提高，结果他们的智力真的大大提高了,这并不是魔法。

耶鲁公开课 - 心理学导论课程节选