中文摘要：

本研究采用社交网站中的自我表露量表、自尊量表、感知积极反馈量表和孤独感量表对武汉市八所普通中学1588名11～19岁的中学生进行调查,考察社交网站中的自我表露和孤独感的关系,以及感知积极反馈在二者关系间的中介作用和自尊对这一中介作用的调节。结果显示：（1）在控制了性别、年龄和社交网站使用时间后,社交网站中的自我表露显著负向预测青少年孤独感;（2）感知积极反馈在社交网站中的自我表露和孤独感之间起部分中介作用;（3）社交网站中的自我表露经由感知积极反馈影响孤独感的中介作用受到自尊的调节。具体而言,感知积极反馈的中介效应只出现在高自尊者中,在低自尊者中并不存在上述中介作用。

英文摘要：

To explore the relationship between self-disclosure on social networking site （SNS） , and loneliness, the mediating role of perceived positive feedback and the moderating effect of self-esteem on the mediating process, questionnaires of self-disclosure on SNS, perceived positive feedback, self-esteem and loneliness were completed a- mong 1588 middle school students from 8 schools in Wuhan aged from 11 to 19. The results indicated that： （1） self-disclosure on SNS negatively predicted adolescents＇ loneliness （2） perceived positive feedback played a par- tially mediated role in the relationship between self-disclosure on SNS and loneliness; （3） self-esteem moderated the mediation effect of perceived positive feedback on the relationship between self-disclosure on SNS and loneli- ness. Specifically, the mediation effect of perceived positive feedback was only found in high self-esteem individu- als, but not in low self-esteem ones.