发表杂志《Applied Psychology: Health and Well-Being》2026年，18卷，5期，文章号 e70242

作者：

Honglei Gu(顾红磊，湖南师范大学)

Yuhang Hu,

Qi Zhong,

Yufang Cheng，

Jie Fang (方杰，广东财经大学发展与改革研究院)

摘要：Problematic social media use (PSMU) and poor sleep quality are prevalent among university students. Although previous research has documented associations between PSMU and sleep problems, less is known about the short-term dynamic mechanisms underlying this relationship and the individual differences that may shape vulnerability. Drawing on intensive longitudinal data and dynamic structural equation modeling, this study examined a moderated mediation model in which nomophobia (i.e. anxiety or distress arising from being unable to access or use one's mobile phone) mediated the association between PSMU and poor sleep quality, with trait rumination examined as a moderator of this indirect association. A 21-day daily diary study was conducted with 228 Chinese university students. At the between-person level, higher PSMU was associated with greater nomophobia and poorer sleep quality. At the within-person level, increases in PSMU wereprospectively associated with greater nomophobia, which subsequently predicted poorer sleep quality, supporting an indirect association through nomophobia. This indirect association was more pronounced among students with higher levels of trait rumination. By capturing dynamic day-to-day processes, these findings extend current understanding of how PSMU may contribute to poorer sleep during emerging adulthood and highlight nomophobia and rumination as potential targets for interventions aimed at promoting healthier digital habits and sleep.

问题性社交媒体使用（PSMU）与睡眠质量差在大学生中普遍存在。尽管以往研究已记录了 PSMU与睡眠问题之间的联系，但人们对这一关系背后的短期动态机制以及可能塑造易感性的个体差异了解仍较少。本研究基于密集追踪数据和动态结构方程模型，检验了一个有调节的中介模型：其中，无手机恐惧症（nomophobia，即因无法接触或使用手机而产生的焦虑或痛苦）在 PSMU与睡眠质量差之间起中介作用，以及特质反刍（trait rumination）在这一中介中的调节作用。研究对 228 名中国大学生开展了为期 21 天的日记法研究。在个体间层面，较高的 PSMU 与更强的无手机恐惧症和更差的睡眠质量相关。在个体内层面，t-1天的PSMU 的增加会导致t天的无手机恐惧症的增加，进而预测t+1天更差的睡眠质量，支持了无手机恐惧症的中介作用。这种中介作用在特质反刍水平较高的学生中更为明显。这些发现拓展了当前对 PSMU 如何在成年早期导致睡眠质量变差的理解，并凸显了无手机恐惧症和反刍思维在促进更健康数字习惯与提高睡眠质量的干预中的可能作用。

Dynamic within-person associations between problematic social media use and sleep quality2026.pdf