Increasing substance use and decreasing well-being are typical in adolescence, yet how social contexts shape disparate development during this time is less well-understood. A latent growth class analysis was conducted that identified groups of early (N = 706; Age_m = 12.20) and middle (N = 666; Age_m = 14.38) adolescents distinguished by rates of substance use and well-being over three years. In both cohorts, the largest group reported low substance use and high well-being, with a smaller group exhibiting maladaptive trajectories for both substance use and well-being. Two additional groups were identified during middle adolescence characterized by either low well-being or high substance use. Family connectedness was a protective factor, while high peer connectedness was a risk factor for substance-use groups and low peer connectedness for languishing.

中文翻译：

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社会联系塑造的青春期早期和中期物质使用和幸福感的轨迹

物质使用增加和幸福感下降是青春期的典型特征，但在此期间社会环境如何塑造不同的发展却鲜为人知。进行了一项潜在增长类别分析，确定了早期（N  = 706；年龄_m  = 12.20）和中期（N  = 666；年龄_m  = 14.38）青少年组，其特征在于三年内的物质使用率和幸福感。在这两个队列中，最大的群体报告了低物质使用和高幸福感，较小的群体表现出物质使用和幸福感的不适应轨迹。在青春期中期确定了另外两个群体，其特征是低幸福感或高物质使用。家庭联系是一个保护因素，而高同伴联系是物质使用组的风险因素，低同伴联系是萎靡不振的风险因素。