This paper sought to provide the first validation of a transdiagnostic measure of repetitive negative thinking – the Perseverative Thinking Questionnaire-Child version (PTQ-C) – in young people diagnosed with anxiety and depressive disorders. Participants (N = 114) were 11- to 17-year-olds with complex and comorbid presentations seeking treatment through Child and Adolescent Mental Health Services. Confirmatory factor analyses best supported a three-factor model for the PTQ-C; however, hypotheses of both perfect and close fit were rejected, and a subsequent bifactor model suggested minimal unique variance for each subscale. Results demonstrated good internal consistency, convergent validity and divergent validity for the total score and three PTQ-S subscales: core characteristics, perceived unproductiveness, and consumed mental capacity of negative repetitive thinking. PTQ-C scores did not account for additional variance in anxiety symptoms once worry was considered, indicating that retention of a content-specific measure may be warranted in clinical samples. Findings emphasize the importance of validating clinically relevant measures which were developed with subclinical populations in samples with diagnosed mental health disorders.

中文翻译：

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对诊断为抑郁症和焦虑症的年轻人重复消极思维的持久性思维问卷的儿童版本的验证

本文试图在被诊断患有焦虑症和抑郁症的年轻人中首次验证重复消极思维的跨诊断测量 - 持久思维问卷 - 儿童版 (PTQ-C)。参与者（N = 114) 是 11 至 17 岁的青少年，他们有复杂和合并症，通过儿童和青少年心理健康服务寻求治疗。验证性因素分析最能支持 PTQ-C 的三因素模型；然而，完美拟合和紧密拟合的假设都被拒绝了，随后的双因子模型表明每个分量表的唯一方差最小。结果表明，总分和三个 PTQ-S 分量表具有良好的内部一致性、收敛效度和发散效度：核心特征、感知的非生产性和消极重复思维的消耗心理能力。一旦考虑到担忧，PTQ-C 评分并不能解释焦虑症状的额外差异，这表明在临床样本中保留特定内容的措施可能是必要的。