This study examined longitudinal associations between early adolescents' school friendship stability, instability, and network size and their perceived social adjustment. The final sample consisted of 430 early adolescents residing in seven Midwestern schools (52% female, 47% Black, 42% White, 5% Hispanic or Latinx, and 6% Other). School friendship stability, instability, and network size were assessed via students' peer nominations of their same-grade friendships collected midway through their 7th and 8th grade years. Students also self-reported on several measures of social adjustment (their social satisfaction, social confidence, and school belonging). Results indicated having new friendships and having a larger friendship network at school were each more predictive of early adolescents' perceived social adjustment than was having maintained friendships or a consistent friend group within this context. However, school friendship stability consistently predicted greater perceived school belonging, whereas having a primarily new friend group and/or having lost more or most of a prior friend group predicted lower levels of this perception. Having lost school friendships was not predictive of early adolescents' social adjustment except when losses composed a significant proportion of their school friendship network (i.e., they had lost more or most of their school friendships from the year before). These findings provide valuable insights about peer friendship dynamics and social adjustment during a life stage critical to social development. (PsycInfo Database Record (c) 2022 APA, all rights reserved).

中文翻译：

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学校友谊稳定性、不稳定性和网络规模在青少年早期社会适应中的作用。

本研究考察了早期青少年的学校友谊稳定性、不稳定性和网络规模与其感知的社会适应之间的纵向关联。最终样本包括居住在七所中西部学校的 430 名早期青少年（52% 的女性、47% 的黑人、42% 的白人、5% 的西班牙裔或拉丁裔和 6% 的其他人）。学校友谊稳定性、不稳定性和网络规模通过学生在 7 年级和 8 年级中期收集的同年级友谊的同伴提名进行评估。学生们还自我报告了一些社会适应的衡量标准（他们的社会满意度、社会信心和学校归属感）。结果表明，在学校拥有新的友谊和拥有更大的友谊网络都更能预测早期青少年的 与在这种情况下保持友谊或一致的朋友群体相比，他们感知到的社会适应。然而，学校友谊稳定性始终预示着更大的学校归属感，而主要是新朋友群和/或失去更多或大部分以前的朋友群预示着这种感知水平较低。失去学校友谊并不能预测早期青少年的社会适应，除非损失占他们学校友谊网络的很大一部分（即，他们在前一年失去了更多或大部分的学校友谊）。这些发现为在对社会发展至关重要的生命阶段中的同伴友谊动态和社会适应提供了宝贵的见解。（PsycInfo 数据库记录 (c) 2022 APA，保留所有权利）。