Treatment integrity is defined as the extent to which the treatment has been implemented according to a specific theoretical model. It consists of two components: adherence, that is, the degree to which the therapist implements the techniques prescribed by the theoretical model, and competence, that is, the degree to which the therapist skilfully and appropriately implements the techniques prescribed by the model. Recently, the issue of integrity is gaining increasing importance in psychotherapy research, especially in an attempt to clarify its role in influencing the effectiveness of treatments. However, most studies focus on the individual setting. Therefore, this systematic review aims at investigating the relationship between integrity and outcome in group clinical treatments. Results highlighted a positive relationship between group treatment integrity and outcome. Moreover, this review provided insights for implications for research, clinical practice, and training of therapists, identifying questions that still need to be answered and tracing possible future research directions.

中文翻译：

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团体心理治疗中治疗完整性与结果之间的关系：系统评价

治疗完整性定义为根据特定理论模型实施治疗的程度。它由两个组成部分组成：依从性，即治疗师实施理论模型规定的技术的程度，以及能力，即治疗师熟练且适当地实施模型规定的技术的程度。最近，诚信问题在心理治疗研究中变得越来越重要，特别是在试图阐明其在影响治疗效果中的作用时。然而，大多数研究都集中在个体环境上。因此，本系统评价旨在调查团体临床治疗的完整性与结果之间的关系。结果强调了团体治疗的完整性和结果之间的正相关关系。此外，这篇综述提供了对研究、临床实践和治疗师培训的影响的见解，确定了仍需要回答的问题并追踪了未来可能的研究方向。