Dr.Mark Hamer's study on the psychological impact of second-hand tobacco smoke appears in the Archives of General Psychiatry, a journal published by the American Medical Association.

VOA: standard.2010.06.15

So instead of just studying pathologies whether it's in physical health or psychological health, we should also study the origin of health.

也就是说除了研究病理学,无论是生理健康，还是心理健康，还需要研究健康的起源。

哈佛公开课 - 幸福课课程节选

You need to know the type of assistance that they receive, The study indicates HIV/AIDS caregivers "experience poverty, are socially isolated,endure stigma and psychological stress and lack basic care-giving education."

VOA: standard.2010.05.10