Although previous research established a positive association between perceived social support and adolescent life satisfaction, little is known about the relative importance of different sources of support for adolescent life satisfaction and cross-country variations in this respect. Using large-scale representative samples from the 2017/18 Health Behaviour in School-aged Children (HBSC) study, this study examined to what extent the association between social support and life satisfaction in early adolescence varied across different social sources and countries. Also, it examined whether cross-country variations are explained by national-level generalized trust, a sociocultural factor that shapes adolescent socialization. National-level data were linked to data from 183,918 early adolescents (M_age = 13.56, SD = 1.63, 52% girls) from 42 European and North American countries/regions obtained from HBSC. Multilevel regression analyses yielded a positive association between support from different sources and life satisfaction. The strongest associations were found for support from families, followed by teachers and classmates, and weakest for support from friends. Associations varied across different countries/regions. National-level trust amplified the association between perceived classmate support and adolescent life satisfaction. The revealed cross-country differences open avenues for future cross-cultural research on explanations for cross-cultural differences in the association between social support from different sources and life satisfaction in early adolescence.

尽管先前的研究在感知社会支持和青少年生活满意度之间建立了正相关，但人们对不同支持来源对青少年生活满意度的相对重要性以及这方面的跨国差异知之甚少。本研究使用来自 2017/18 学龄儿童健康行为 (HBSC) 研究的大规模代表性样本，研究了社会支持与青春期早期生活满意度之间的关联在不同社会来源和国家之间的差异程度。此外，它还研究了国家层面的普遍信任是否可以解释跨国差异，这是一种塑造青少年社会化的社会文化因素。国家级数据与 183,918 名早期青少年（M_岁 = 13.56, SD  = 1.63, 52% 女孩）来自 42 个欧洲和北美国家/地区的 HBSC。多级回归分析得出不同来源的支持与生活满意度之间存在正相关。家庭支持的关联最强，其次是老师和同学，朋友的支持最弱。不同国家/地区的协会各不相同。国家级信任放大了感知到的同学支持与青少年生活满意度之间的关联。所揭示的跨国差异为未来跨文化研究开辟了道路，以解释不同来源的社会支持与青春期早期生活满意度之间关联的跨文化差异。