Social norms are vital for the functioning of adolescent peer groups; they can protect the well-being of groups and individual members, often by deterring harmful behaviors, such as aggression, through enforcement mechanisms like peer victimization; in adolescent peer groups, those who violate aggression norms are often subject to victimization. However, adolescents are nested within several levels of peer group contexts, ranging from small proximal groups, to larger distal groups, and social norms operate within each. This study assessed whether there are differences in the enforcement of aggression norms at different levels. Self-report and peer-nomination data were collected four times over the course of a school year from 1,454 early adolescents (M _age = 10.27; 53.9% boys) from Bogota, Colombia. Multilevel modeling provided support for social regulation of both physical aggression and relational aggression via peer victimization, as a function of gender, grade-level, proximal (friend) or distal (class) injunctive norms of aggression (perceptions of group-level attitudes), and descriptive norms of aggression. Overall, violation of proximal norms appears to be more powerfully enforced by adolescent peer groups. The findings are framed within an ecological systems theory of adolescent peer relationships.

社会规范对于青少年同伴群体的运作至关重要。它们通常可以通过同伴受害等执法机制来阻止侵略等有害行为，从而保护团体和个人的福祉；在青少年同龄人群体中，那些违反侵略规范的人通常会遭受伤害。但是，青少年被嵌套在同等群体环境的多个级别中，范围从较小的近端组到较大的远端组，并且每个群体内都有社会规范。这项研究评估了不同级别的侵略规范的执行是否存在差异。在一个学年中，从1,454名青少年中（M _年龄）收集了四次自我报告和同伴提名数据= 10.27; 53.9％的男孩）来自哥伦比亚波哥大。多级建模为通过同伴受害而对身体侵略和关系侵略进行社会调节提供了支持，这是性别，年级，近端（朋友）或远端（班级）禁令的侵略规范（对群体态度的看法）的函数，和侵略性的描述性规范。总体而言，青少年同龄人群体似乎更有力地违反了近端规范。这些发现是在青少年同伴关系的生态系统理论框架内构建的。