Deviant siblings have been considered as role models for future delinquent behavior; however, previous studies have led to inconsistent results in this regard. The goal of the current meta-analysis was to analyze the effect of deviant non-twin siblings on future delinquency. The potential moderation effects of birth order, sex dyad, age of siblings, publication year, study length, and sample size were analyzed. Six databases were searched for studies: PsycInfo, MEDLINE, Criminal Justice Abstracts, Web of Science, SCOPUS, and Google Scholar. To analyze the prospective interdependence of delinquent siblings, only longitudinal studies were considered for inclusion in the meta-analysis. Two authors independently went through all the retrieved studies and coded those eligible for inclusion, with good interrater agreement. A total of 18 studies were included, which provided 24 independent effect sizes. The meta-analysis showed a significant prospective association between deviant siblings and delinquency. A moderate effect size was found from older sibling to younger sibling and vice versa, as well as between siblings when birth order was not specified. Likewise, significant associations were found in brother pairs, sister pairs, and mixed-sex sibling pairs. No moderation effects were found for age of siblings, publication year, study length, or sample size. The results highlight the role of siblings as a risk factor for future delinquency.

越轨的兄弟姐妹被认为是未来犯罪行为的榜样；然而，之前的研究在这方面导致了不一致的结果。当前荟萃分析的目的是分析异常的非双胞胎兄弟姐妹对未来犯罪的影响。分析了出生顺序、性别对、兄弟姐妹年龄、出版年份、研究长度和样本量的潜在调节作用。搜索了六个数据库：PsycInfo、MEDLINE、Criminal Justice Abstracts、Web of Science、SCOPUS 和 Google Scholar。为了分析犯罪兄弟姐妹的前瞻性相互依赖关系，只有纵向研究被考虑纳入荟萃分析。两位作者独立浏览了所有检索到的研究，并对符合纳入条件的研究进行了编码，具有良好的评价者一致性。共纳入 18 项研究，提供 24 个独立效应量。荟萃分析显示异常兄弟姐妹与犯罪之间存在显着的前瞻性关联。在未指定出生顺序的情况下，从年长的兄弟姐妹到年幼的兄弟姐妹（反之亦然）以及兄弟姐妹之间的影响大小适中。同样，在兄弟对、姐妹对和混合性别的兄弟姐妹对中也发现了显着的关联。没有发现兄弟姐妹年龄、出版年份、研究长度或样本量的调节效应。结果强调了兄弟姐妹作为未来犯罪风险因素的作用。在未指定出生顺序的情况下，从年长的兄弟姐妹到年幼的兄弟姐妹（反之亦然）以及兄弟姐妹之间的影响大小适中。同样，在兄弟对、姐妹对和混合性别的兄弟姐妹对中也发现了显着的关联。没有发现兄弟姐妹年龄、出版年份、研究长度或样本量的调节效应。结果强调了兄弟姐妹作为未来犯罪风险因素的作用。在未指定出生顺序的情况下，从年长的兄弟姐妹到年幼的兄弟姐妹（反之亦然）以及兄弟姐妹之间的影响大小适中。同样，在兄弟对、姐妹对和混合性别的兄弟姐妹对中也发现了显着的关联。没有发现兄弟姐妹年龄、出版年份、研究长度或样本量的调节效应。结果强调了兄弟姐妹作为未来犯罪风险因素的作用。