Both Langer and Stone were my physicist advisors, introduced me to the field of positive psychology into this research.

两位都是我的物理学导师，带我进入了积极心理学领域的研究。

哈佛公开课 - 幸福课课程节选

But essentially research that falls under or within the field of positive psychology.

但本质上属于积极心理学范畴。

哈佛公开课 - 幸福课课程节选

Second reason for having positive psychology's field of study and focusing on what works and focusing on research in happiness,relationships and wellbeing is because happiness does not spontaneously rise when take unhappiness away.

第二个研究积极心理学的原因,研究可行的事和,研究快乐，人际关系，幸福的原因,是因为幸福不会因为驱除了忧愁,而自动增长。

哈佛公开课 - 幸福课课程节选