This article provides a narrative review of longitudinal studies investigating the impact of social media (SM) use on adolescent well-being from 2006 to 2019. A topic of popular concern, most research to date has been cross-sectional, limiting the inferences that can be drawn to correlational observations. Longitudinal studies add valuable input to extant scholarship, and they have begun to emerge in the literature. A systematic search of PsychINFO, Web of Science, and Assia conducted in January 2019 identified 14 papers meeting inclusion criteria. The article summarizes the evidence and highlights emerging trends. Most notably, research distinguishing type of SM use, as opposed to mere frequency of SM use, is producing more significant results, suggesting a need for study designs that are able to capture the complexities of SM engagement beyond time spent online. The review also sets out the limitations of the current studies, which include unvalidated, self-report exposure measures and a failure to consider conditional effects. Addressing these challenges will present avenues for future research.

中文翻译：

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社交媒体的使用与青少年幸福感：纵向研究的叙事回顾

本文提供了纵向研究的叙述性评论，该纵向研究调查了使用社交媒体（SM）对2006年至2019年青少年幸福感的影响。一个备受关注的话题是，迄今为止，大多数研究都是横断面的，从而限制了可以得出的结论。被相关的观察所吸引。纵向研究为现有的学术研究提供了有价值的投入，并且它们已经开始出现在文献中。在2019年1月对PsychINFO，Web of Science和Assia进行的系统搜索确定了14篇符合纳入标准的论文。本文总结了证据并强调了新兴趋势。最值得注意的是，与仅使用SM的频率相反，区分SM使用类型的研究正在产生更重要的结果，这表明需要设计研究，这些研究设计能够捕捉在线上花费的时间以外的SM参与的复杂性。审查还列出了当前研究的局限性，其中包括未经验证的自我报告暴露措施以及未考虑条件效应的情况。应对这些挑战将为今后的研究提供途径。