The increased proportion of juvenile court‐involved girls has spurred interest to implement and evaluate services to reduce girls’ system involvement. The purpose of this study was to examine the effectiveness of a family‐based intervention by using a dominant sequential mixed methods evaluation approach. First, we examined quantitative data using a quasi‐experimental design to determine whether the family‐based intervention reduced recidivism among court‐involved girls. Propensity score matching (PSM) was used to construct statistically equivalent groups to compare one‐year recidivism outcomes for girls who received the court‐run family‐based intervention (n = 181) to a group of girls on probation who did not receive the intervention (n = 803). Qualitative interviews (n = 39) were conducted to contextualize the quantitative findings and highlighted the circumstances that family‐focused interventions for court‐involved girls. Girls who received the program had slightly lower recidivism rates following the intervention. The qualitative findings contextualized the quasi‐experimental results by providing an explanation as to the girls’ family circumstances and insights into the mechanisms of the intervention. Results highlighted the importance of family‐focused interventions for juvenile justice‐involved girls. These findings have practical and policy implications for the use interventions—beyond the individual level—with adjudicated girls and offer suggestions for ways to improve their effectiveness using a community psychology lens. In addition, this paper includes a discussion of evaluating of juvenile court programming from a community psychology perspective including strengths, challenges, and considerations for future work in this area.

中文翻译：

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对涉法系女童的家庭干预：混合方法评价

少年法庭参与的女孩比例增加激发了实施和评估服务以减少女孩参与系统的兴趣。本研究的目的是通过使用占主导地位的顺序混合方法评估方法来检验基于家庭的干预的有效性。首先，我们使用准实验设计检查了定量数据，以确定基于家庭的干预是否减少了出庭女孩的累犯率。倾向得分匹配 (PSM) 用于构建统计学上等效的组，以比较接受法院管理的基于家庭的干预 ( n  = 181) 的女孩与未接受干预的缓刑女孩的一年累犯结果( n  = 803)。定性访谈（n = 39) 用于将定量结果置于情境中，并强调以家庭为中心的干预对出庭女孩的情况。接受该计划的女孩在干预后的再犯率略低。定性研究结果通过解释女孩的家庭情况和对干预机制的见解，将准实验结果与准实验结果联系起来。结果强调了以家庭为中心的干预措施对参与少年司法的女孩的重要性。这些发现对使用干预措施具有实际和政策意义 - 超越个人层面 - 与被裁定的女孩一起使用，并为使用社区心理学镜头提高其有效性的方法提供建议。此外，