中文版虚拟治疗关系量表在具有抑郁症状人群中的信度和效度检验

Reliability and validity of a Chinese version of Virtual Therapeutic Alliance Scale among people with depressive symptoms

关键词:  虚拟现实心理治疗  数字化心理治疗  虚拟治疗师  治疗关系  信度  效度  抑郁症状

Key words:  virtual reality treatment  digital mental health treatment  virtual therapist  therapeutic alliance  reliability  validity  depression symptom

摘要:

目的使用中文版虚拟治疗关系量表（Virtual Therapeutic Alliance Scale, VTAS）,在具有抑郁症状的人群中进行信度和效度检验。 方法基于经典回译模型,将英语版VTAS翻译为中文并进行文化调试。网络招募具有抑郁症状的受试者（n=70）体验一项自助式VR心理干预程序后施测。使用中文版沉浸感量表（Igroup Presence Questionnaire, IPQ）和中文版系统可用性量表（System Usability Scale, SUS）作为效度指标。采用项目分析、内部一致性信度、分半信度、效标效度、探索性因素分析和验证性因素分析对中文版VTAS进行检验。 结果共回收有效问卷68份。条目呈现三因子结构,分别是任务目标（goal and task）、情感联结（bond and empathy）与沉浸共存（presence and copresence）,解释总变异的67.4%。验证性因素分析进一步验证了问卷结构的稳定性（χ2/df=1.716, SRMR=0.073, TLI=0.874, CFI=0.897）。量表内部一致性信度和分半信度分别为0.929和0.928。中文版VTAS与两个效标问卷评分（中文版IPQ和SUS）显著相关（r=0.401,P=0.002;r=0.397,P=0.008）。 结论中文版VTAS的信度和效度较好,可用于评估具有抑郁症状的人群使用自助式心理干预程序时与虚拟治疗师的治疗关系。

Abstract:

ObjectiveTo examine the reliability and validity of the Chinese version of Virtual Therapeutic Alliance Scale（VTAS） among people with depressive symptoms. MethodsBased on back-translation procedure, the English version of VTAS was translated into Chinese and culturally adapted. Seventy subjects with depressive symptoms recruited online were tested after experiencing a self-help VR psychological intervention. The Chinese version of Igroup Presence Questionnaire(IPQ) and System Usability Scale(SUS) were chosen as criterion indicators. Item analysis, internal consistency reliability, split half reliability, criterion validity, exploratory factor analysis(EFA) and confirmatory factor analysis(CFA) were used to test the reliability and validity of the Chinese version of VTAS. ResultsSixty eight(97.0%) valid questionnaires were collected. The items showed a 3-factor structure:“goal and task”, “bond and empathy”, and “presence and copresence”, which explained 67.4% of the total variance. The results of CFA confirmed the stability of the structure(χ2/df=1.716, SRMR=0.073, TLI=0.874, CFI=0.897). Internal consistency reliability and split-half reliability of the scale were 0.929 and 0.928. The Chinese version of VTAS was significantly correlated with IPQ and SUS(r=0.401, P=0.002; r=0.397, P=0.008). ConclusionThe Chinese version of Virtual Therapeutic Alliance Scale showed a three-factor solution, good reliability and adequate validity. It can be used as an alliance instrument for virtual therapists in self-help digital psychological intervention among people with depressive symptoms.