There is increasing recognition of the potential for sibling relationships to promote the well-being of youth in out-of-home care. Efficacious interventions now exist to strengthen the sibling relationships for youth in out-of-home care, yet the processes through which these interventions work to enhance sibling relationships remains largely speculative. The current study therefore aimed to identify the critical components of an efficacious dyadic relationship enhancement intervention for siblings in foster care through a secondary analysis of fidelity of implementation and trial outcome data. Data for 168 youth from the treatment condition of the Supporting Siblings in Foster Care study were analysed. Fidelity of implementation was assessed across seven intervention domains: Sibs 4 Life, Positive/Sib Thinking, Activity Planning, Problem Solving, Cooperation, Managing Feelings and Adult Allies. Trial outcome data were drawn from efficacy test results and included a multi-agent construct of sibling relationship quality. Descriptive statistics detailed intervention implementation, and hierarchical linear models examined associations between intervention coverage, comprehension, and engagement, and 18-month improvements to the sibling relationship. Results indicate high fidelity to implementation, and Positive/Sib Thinking was the primary intervention domain associated with sibling relationship improvements. Considerations for future mechanisms-based intervention research with siblings in out-of-home care are provided.

中文翻译：

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探索寄养兄弟姐妹二元关系干预的变化机制

人们越来越认识到兄弟姐妹关系在促进家庭外护理中青年人福祉方面的潜力。现在存在有效的干预措施来加强户外护理中青年的兄弟姐妹关系，但这些干预措施用于加强兄弟姐妹关系的过程在很大程度上仍然是推测性的。因此，当前的研究旨在通过对实施保真度和试验结果数据的二次分析，确定对寄养中的兄弟姐妹进行有效的二元关系增强干预的关键组成部分。分析了 168 名来自寄养研究中支持兄弟姐妹治疗条件的青少年的数据。实施的忠实度在七个干预领域进行了评估：Sibs 4 Life、积极/同胞思维、活动计划、问题解决、合作、管理感情和成人盟友。试验结果数据来自功效测试结果，包括兄弟姐妹关系质量的多代理结构。描述性统计详细说明了干预实施情况，分层线性模型检查了干预覆盖率、理解力和参与度与 18 个月兄弟姐妹关系改善之间的关联。结果表明对实施的高度忠诚，积极/同胞思维是与同胞关系改善相关的主要干预领域。提供了未来在家庭外护理中与兄弟姐妹进行基于机制的干预研究的注意事项。描述性统计详细说明了干预实施情况，分层线性模型检查了干预覆盖率、理解力和参与度与 18 个月兄弟姐妹关系改善之间的关联。结果表明对实施的高度忠诚，积极/同胞思维是与同胞关系改善相关的主要干预领域。提供了未来在家庭外护理中与兄弟姐妹进行基于机制的干预研究的注意事项。描述性统计详细说明了干预实施情况，分层线性模型检查了干预覆盖率、理解力和参与度与 18 个月兄弟姐妹关系改善之间的关联。结果表明对实施的高度忠诚，积极/同胞思维是与同胞关系改善相关的主要干预领域。提供了未来在家庭外护理中与兄弟姐妹进行基于机制的干预研究的注意事项。积极/同胞思维是与同胞关系改善相关的主要干预领域。提供了未来在家庭外护理中与兄弟姐妹进行基于机制的干预研究的注意事项。积极/同胞思维是与同胞关系改善相关的主要干预领域。提供了未来在家庭外护理中与兄弟姐妹进行基于机制的干预研究的注意事项。