This study aimed to explore the relationship between online social participation and depressive symptoms in middle-aged and older adults and its underlying mechanism. A total of 1063 urban middle-aged and older adults aged 50 and above completed a set of questionnaires including SNS Older Adults Measure, Short Form of the Center for Epidemiologic Studies Depression Scale, Basic Psychological Need Satisfaction Scale and Social Network Scale. The results showed that: 1) online social participation had a significant negative prediction on depression symptoms in middle-aged and older adults; 2) autonomy, competence and relatedness needs satisfaction played complete mediating roles in the relationship between online social participation and depressive symptoms; 3) the first half path of the mediating effect of "online social participation一basic psychological need satisfaction一depressive symptoms" was moderated by social network size.

为考察中老年人线上社会参与和抑郁症状的关系及其内在机制,采用老年人社交网络量表、流调中心抑郁量表、基本心理需求满足量表和社会网络量表对1063名50岁及以上城市中老年人进行调查.结果表明:(1)中老年人线上社会参与显著负向预测抑郁症状;(2)自主、胜任、关系需求满足在线上社会参与和抑郁症状之间起完全中介作用;(3)社会网络规模调节了"线上社会参与?基本心理需求满足?抑郁症状"这一中介效应的前半段路径.

基金项目:国家自然利一学基金(71774154);中国利一学院行为利一学重点实验室项目(YSCX052003)