City University of Hong Kong, Hong Kong.
J Health Psychol. 2011 Nov;16(8):1251-8. doi: 10.1177/1359105311407366. Epub 2011 Jun 27.
This article aims to clarify if insomnia exerts a mediating or moderating effect on the optimism-depression association in Chinese college students. 529 Chinese college students completed the Beck Depression Inventory (BDI-II), the Pittsburgh Sleep Quality Index (PSQI), the Revised Life Orientation Test (LOT-R) and the Multidimensional Scale of Social Support (MSPSS). The results failed to show any moderating effect but after adjustment for age, gender and social support, a mediating effect was observed. In conclusion, insomnia qualifies as a mediator, suggesting considerable variance in depressive symptoms of college students could be due to change in their sleep status.
本文旨在厘清失眠是否对中国大学生的乐观与抑郁关联具有中介或调节作用。529 名中国大学生完成贝克抑郁量表第二版（BDI-II）、匹兹堡睡眠质量指数（PSQI）、修订后的生活取向测验（LOT-R）和多维社会支持量表（MSPSS）。结果未显示任何调节作用，但在调整年龄、性别和社会支持后，观察到中介效应。总之，失眠是一种中介因素，这表明大学生抑郁症状的相当大差异可能是由于其睡眠状态的改变。
