And what he found was the students who were labeled-- randomly so, but who were labeled-- "fast spurters", their IQ increased significantly over the year and maintained that increase in a longitudinal study.

他发现被标签为-,被随机地标签为“快速迸发“的学生-,智商在一年间有很大增加,而且在长期研究中保持着增加。

哈佛公开课 - 幸福课课程节选

So here is a longitudinal study that was done by John Carter.

所以下面讲讲John，Carter所作的纵向研究。

哈佛公开课 - 幸福课课程节选