Stressful life events (SLEs) are strongly associated with the emergence of adolescent anxiety and depression, but the underlying mechanisms remain poorly understood, especially at the within-persons level. We investigated how adolescent social communication (i.e., frequency of calls and texts) following SLEs relates to changes in internalizing symptoms in a multitimescale, intensive, year-long study (N = 30; n = 355 monthly observations; n ≈ 5,000 experience-sampling observations). Within-persons increases in SLEs were associated with receiving more calls than usual at both the month and moment levels and making more calls at the month level. Increased calls were prospectively associated with worsening internalizing symptoms at the month level only, suggesting that SLEs rapidly influence phone communication patterns, but these communication changes may have a more protracted, cumulative influence on internalizing symptoms. Finally, increased incoming calls prospectively mediated the association between SLEs and anxiety at the month level. We identify adolescent social communication fluctuations as a potential mechanism conferring risk for stress-related internalizing psychopathology.

压力性生活事件 (SLE) 与青少年焦虑和抑郁的出现密切相关，但其潜在机制仍知之甚少，尤其是在个人层面。我们调查了 SLE 后青少年社交交流（即通话和发短信的频率）如何与多时间尺度、密集、长达一年的研究中内化症状的变化相关（N = 30；n = 355个月观察；n≈ 5,000 次经验抽样观察）。个人内部 SLE 的增加与在月份和时刻级别接到比平时更多的电话以及在月份级别拨打更多电话有关。增加的电话仅在月份水平上与恶化的内化症状前瞻性相关，这表明 SLE 迅速影响电话通信模式，但这些通信变化可能对内化症状产生更持久的累积影响。最后，增加的来电在月水平上前瞻性地调节了 SLE 和焦虑之间的关联。我们将青少年社交沟通波动确定为一种潜在机制，该机制会导致与压力相关的内化精神病理学风险。