The alliance has been a leading player in the long-running debate on whether therapeutic change is driven by factors common across distinct treatments or by treatment-specific factors. The present study disentangled between-patients differences in alliance strength from within-patient changes to investigate whether two treatments with identical goals but based on different roles of alliance differ in the within-patient effect of alliance on outcome. Both treatments are aimed at improving the patients' interpersonal abilities, but in the supportive treatment (ST) the alliance is the main specific factor, whereas in the supportive-expressive treatment (SET) it is conceptualized as a common factor. One hundred patients were randomized to receive either ST or SET. Treatment outcome and alliance were assessed weekly. Treatment condition significantly moderated the effect of within-patient changes in the alliance (relative to its mean) on subsequent treatment outcome, so that any increases in state-like alliance predicted lower levels of subsequent depressive symptoms in ST than in SET. (PsycInfo Database Record (c) 2022 APA, all rights reserved).

中文翻译：

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联盟本身是否具有治疗作用？这取决于。

在关于治疗改变是由不同治疗的共同因素驱动还是由治疗特定因素驱动的长期争论中，该联盟一直处于领先地位。本研究将患者之间联盟强度的差异与患者内部变化分开，以调查具有相同目标但基于联盟不同角色的两种治疗在联盟对结果的患者内部影响方面是否存在差异。两种治疗都旨在提高患者的人际交往能力，但在支持治疗（ST）中，联盟是主要的特定因素，而在支持-表达治疗（SET）中，它被概念化为共同因素。一百名患者被随机分配接受 ST 或 SET。每周评估治疗结果和联盟。治疗条件显着缓和了联盟中患者内部变化（相对于其平均值）对随后治疗结果的影响，因此，状态样联盟的任何增加都预示着 ST 中随后的抑郁症状水平低于 SET。（PsycInfo 数据库记录 (c) 2022 APA，保留所有权利）。