We conducted item response theory analyses to refine the Reflective Function Questionnaire for Youth (RFQY) Scale B. Data from a non-clinical sample of young people (n = 737; aged 18-25 years) was used to derive a shortened version of the RFQY. Results were replicated in a clinical sample of inpatient adolescents (n = 467; aged 12-17 year), resulting in a five-item measure, thereafter named the RFQY-5. The RFQY-5 item set was then scrutinized for construct validity against the original 23-item RFQY item set in a randomly selected sample of 100 inpatient adolescents not included in the item response theory replication, and 186 healthy adolescents drawn from the community. Results showed that the RFQY-5 performed similarly as the long version in terms of associations with criterion variables, and outperformed the longer version in discriminating between inpatient and community-dwelling adolescents who differed in their levels of borderline traits. The study provides evidence in support of the use of the RFQY-5 in research and clinical settings.

我们进行了项目反应理论分析，以改进青年反射功能问卷 (RFQY) 量表 B。来自年轻人的非临床样本（n = 737；年龄 18-25 岁）的数据被用于推导缩短版的询价单。结果在住院青少年的临床样本中重复（n= 467; 12-17 岁），产生五项措施，此后命名为 RFQY-5。然后，在随机选择的 100 名未包括在项目反应理论复制中的住院青少年和 186 名来自社区的健康青少年的样本中，检查 RFQY-5 项目集与原始 23 项 RFQY 项目集的结构有效性。结果表明，RFQY-5 在与标准变量的关联方面表现与长版本相似，并且在区分边缘特征水平不同的住院患者和社区居住青少年方面优于长版本。该研究提供了支持在研究和临床环境中使用 RFQY-5 的证据。