@article{ref1,
title="The effect of optimism on depression: The mediating and moderating role of insomnia",
journal="Journal of health psychology",
year="2011",
author="Sing, Cheuk Yan and Wong, Wing S.",
volume="16",
number="8",
pages="1251-1258",
abstract="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.<p /> <p>Language: en</p>",
language="en",
issn="1359-1053",
doi="10.1177/1359105311407366",
url="http://dx.doi.org/10.1177/1359105311407366"
}