This registered report evaluated the efficacy of an Italian adaptation of the Identity Project, a school-based intervention promoting adolescents' cultural identity. Migration background and environmental sensitivity were explored as moderators. After adapting and piloting the intervention, a randomized controlled trial was conducted between October 2021 and January 2022 on 747 ethnically diverse adolescents (M_age = 15 years, 53% girls, 31% with migration background) attending 45 classrooms randomly assigned to the intervention or control condition. Bayesian analyses confirmed the efficacy of the Italian IP in enhancing exploration processes (Cohen's d = .18), whereas no cascading effect on resolution emerged. Youth with higher (vs. lower) levels of environmental sensitivity benefited more in terms of exploration. Implications for developmental theory and practice are discussed.

中文翻译：

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意大利多民族课堂青少年身份项目干预的文化适应效果：一项随机对照试验

这份注册报告评估了意大利改编的身份项目的功效，这是一项以学校为基础的促进青少年文化身份的干预措施。移民背景和环境敏感性作为调节因素进行了探讨。在调整和试点干预措施后，2021 年 10 月至 2022 年 1 月期间，对 747 名不同种族的青少年（M_年龄 = 15 岁，53% 女孩，31% 有移民背景）进行了一项随机对照试验，他们参加了随机分配到干预组的 45 个教室，或者控制条件。贝叶斯分析证实了意大利知识产权在增强勘探过程方面的功效（Cohen's d  = .18），但没有出现对分辨率的级联效应。环境敏感度较高（相对于较低）的青少年在探索方面受益更多。讨论了对发展理论和实践的影响。