Department of Clinical Psychology and Psychotherapy, University of Bern, Switzerland.
Psychosomatic Competence Center, University Hospital Inselspital, Bern, Switzerland.
J Clin Psychol. 2020 Jun;76(6):973-986. doi: 10.1002/jclp.22823. Epub 2019 Jun 25.
This study analyses the psychometric properties of the Working Alliance Inventory adapted for guided Internet interventions (WAI-I).
We drew on the data set from a multicenter trial that examined a guided Internet intervention (deprexis) for patients with mild to moderate depression. Two hundred twenty-three patients completed the WAI-I and the Patient Satisfaction Questionnaire (ZUF-8) at posttreatment, and the Attitudes toward Psychological Online-Interventions Questionnaire (APOI) at baseline. We ran confirmatory factor analyses (CFA) testing two- and three-factor solutions and calculated Cronbach's α, item-total correlations, and correlations of the WAI-I with APOI and ZUF-8.
The results suggested a two-factor solution, with a very good model fit and evidence of factor independency, adequate internal consistency, and external validity for the complete scale and the sub-scales.
The WAI-I showed as a reliable and valid instrument to capture alliance in guided Internet interventions, which might facilitate process-outcome research and treatment development efforts.
本研究分析了适应指导性互联网干预的工作联盟量表（WAI-I）的心理计量学特性。
我们借鉴了一项多中心试验的数据，该试验检查了针对轻度至中度抑郁症患者的指导性互联网干预（deprexis）。223 名患者在治疗后完成了 WAI-I 和患者满意度问卷（ZUF-8），并在基线时完成了对心理在线干预态度问卷（APOI）。我们进行了验证性因素分析（CFA），检验了两因素和三因素解决方案，并计算了 WAI-I 与 APOI 和 ZUF-8 的 Cronbach's α、项目总分相关性和相关性。
结果表明，存在一种两因素解决方案，具有非常好的模型拟合度和因子独立性的证据、足够的内部一致性以及完整量表和子量表的外部有效性。
WAI-I 是一种可靠且有效的工具，可以在指导性互联网干预中捕捉联盟关系，这可能有助于促进过程-结果研究和治疗发展工作。
