Development and psychometric properties of the Cognitive Distortions Questionnaire for Adolescents (CD-Quest-T)

Abstract Introduction The Cognitive Distortions Questionnaire (CD-Quest) is an instrument that identifies logical errors or cognitive distortions and is used in trial-based cognitive therapy (TBCT). However, it had previously only been available for adults. Objectives To develop and validate a version of the CD-Quest for teens (CD-Quest-T) aged 11 to 17 years and test its psychometric properties. Method A total of 299 schoolchildren participated in the investigation. After content validity was assessed, the language was adapted for the target age group, and the length of the instrument was reduced to eight items (from the initial 15). Five cognitive therapists analyzed the content and structure of the items. Finally, to investigate the construct validity of the CD-Quest-T, the instrument was divided into a full scale and two subscales, which measure the frequency of the distortions and the intensity attributed to them, respectively. Results The overall internal consistency of the scale was α = 0.77, whereas subscale indices were α = 0.75 for the frequency scale and α = 0.73 for the intensity scale. Results from exploratory factor analysis and concurrent validity analysis indicated that the CD-Quest-T items have good psychometric properties and generate scores reliably. Conclusion The psychometric properties of the CD-Quest-T demonstrate its adequacy for measurement of cognitive distortions in adolescents.

摘要与引言：认知歪曲问卷（Cognitive Distortions Questionnaire, CD-Quest）是一款用于识别逻辑谬误与认知歪曲的测评工具，广泛应用于基于试验的认知疗法（trial-based cognitive therapy, TBCT）。但此前该问卷仅针对成年人开发。
研究目的：开发并验证适用于11至17岁青少年的CD-Quest版本（CD-Quest-T），并检验其心理测量学特性。
研究方法：本研究共招募299名学龄儿童参与。在完成内容效度评估后，研究团队针对目标年龄群体进行了语言适配，并将问卷条目从最初的15项精简至8项。5名认知治疗师对条目内容与结构进行了审核分析。最终，为考察CD-Quest-T的结构效度，研究将该工具划分为总量表与两个分量表，分别用于测量认知歪曲的发生频率与主观归因强度。
研究结果：该量表的整体内部一致性系数为α=0.77，其中频率分量表的α系数为0.75，强度分量表的α系数为0.73。探索性因子分析与同时效度分析结果显示，CD-Quest-T的条目具备良好的心理测量学特性，得分信度可靠。
研究结论：CD-Quest-T的心理测量学特性表明其可有效用于青少年群体的认知歪曲测评。