Abstract: With the rise of the positive psychology, the researchers have been gradually changing their main emphasis of their studies into the individual positive quality, in which the proactive coping and the concerning of the positive emotions in academics have formed. The proactive coping is a kind of action, which was taken before the advent of pressure. It means a series of efforts of an individual who wants to challenge him or seeking self-development. Studies in the past have found that the social support can not only be able to improve the individual’s positive emotions, but also can improve the positive emotions through the proactive coping. Frequently experiencing of the positive emotions may reduce the possibility of suffering from the depression, and that is the exact goal the psychologists want to achieve. Discussing the interaction mechanism of the social support acting upon the depression, this essay lays more stress on investigating the mediating effect of the proactive coping as well as the positive emotions in this model. This research adopts the longitudinal study design method, and takes use of Social Support Rating Scale (SSRS), Proactive Coping Subscale (PCS), Positive and Negative Affect Scale (PANAS) and Center for Epidemiological Studies Depression Scale (CES-D). The research investigated 181 students from two universities in Beijing, and testing at two time points——at the beginning of the new term and close to the end of the term——time interval for nearly four months. This research took use of Path Analysis to study the influence of the social support acting upon the depression of the students. This paper also discussed the function of the proactive coping and the positive emotions in the whole procedure. The study shows: the proactive coping, the social support and the positive emotions have remarkable relations with the depression of college students. Partially, the proactive coping mediates the relationship of the social support and the positive emotions. In addition, the positive emotions is a mediator between both the social support and the depression, also a mediator between the proactive coping and the depression. In conclusion, the proactive coping is regarded as an intervening variable between the social support and the positive emotions at Time 1.Therefore, with sound social support, we should positively prepare and enhance appropriate proactive coping strategies so as to further strengthen the positive emotions. Besides, the positive emotions at Time 1 is an intervening variable between the social support and the proactive coping at Time 1 and the depression at Time 2.We should encourage individuals actively participate in daily activities, which could enhance their positive emotional experience. In this way, students will effectively prevent depression.

Key words: social support, proactive coping, positive emotions, depression, intervening variable

摘要： 本研究旨在探索预先应对和积极情绪在社会支持和抑郁间的中介作用。采用两个时间点的纵向数据搜集方式对181名大学生施以量表，然后通过路径分析对假设的中介模型进行拟合度检验，结果表明：（1）预先应对是社会支持和积极情绪之间的部分中介变量；（2）积极情绪是社会支持和预先应对与抑郁间的中介变量。结论：社会支持是预防抑郁的重要途径，提升预先应对策略和积极情绪的体验可以进一步增进社会支持对抑郁的缓解作用。

关键词: 社会支持, 预先应对, 积极情绪, 抑郁, 中介作用