中文摘要：

Fredrickson的积极情绪的扩展～建构理论（broaden—and—build theory）认为积极情绪具有激活行动、扩展认知、建设资源和缓解压力的功能。但是积极情绪是否是心理弹性到压力适应的中介变量有待于进一步研究。该研究让37名女大学生先完成中国情感量表和Connor—Davidson心理弹性量表，然后进行压力情境实验，通过生理多导仪记录实验前后压力下的生理反应，以压力下的生理恢复时间作为压力适应的指标。最后通过中介检验程序分析积极情绪在心理弹性到压力适应的中介效应。结果表明：（1）压力下个体的心理弹性水平与生理恢复指标显著相关（r=-0．75，P〈0．001）；（2）当心理弹性和积极情绪同时进入回归方程时，积极情绪对压力适应的预测显著，心理弹性对生理恢复指标的预测下降，但是依然显著（r=-0．62，P〈0．001）。结论：积极情绪在心理弹性与压力适应间起部分中介作用。

英文摘要：

According to Fredrickson＇ s broaden-and-build theory positive affect is the most important mechanism for resilient people to bounce back from stress. By stress experiment we studied the mediating role of positive affect between resilience and adaptation. The study used 37 female students to test their affect and resilience, and exam at a stress condition using duration of cardiovascular reactivity as an index of adaptation. The result was ： （ 1 ） under stress resilience was significantly correlated with duration of cardiovascular reactivity （ r = - 0.75, p 〈 0. 001 ） ; （2） When positive affect was added in the regression equation the effect of resilience on duration of cardiovascular reactivity was declining but still significant （ r = - 0.62 ,p 〈 0. 001 ）. The conclusion was that positive affect played a partly meditational role between resilience and adaptation under stress.