The present study expands on Bowen's systemic multigenerational theory to analyse the role of individual trajectories of differentiation of self in perceived dyadic adjustment in a sample of 468 Italian participants. The research also explored which aspects of differentiation of self most strongly predicted dyadic adjustment in the total sample and in male and female subsamples. The various components of differentiation of self (emotional reactivity, emotional cut‐off, emotional fusion and I‐position) and dyadic adjustment levels were investigated using the revised differentiation of self inventory — revised, and the dyadic adjustment scale (DAS). The analysis revealed that the emotional cut‐off dimension was the strongest negative predictor of dyadic adjustment. The research focused on the importance of differentiation of self processes to achieving an understanding of couple dynamics in research and clinical practice. Practitioners points Assessment of differentiation of self could be incorporated into the preliminary phase of couple therapy in order to screen for specific maladaptive patterns of differentiation. Information about the differentiation processes could be used during the therapy to increase the I‐position status, or decrease emotional reactivity and emotional cut‐off. Differentiation of self and dyadic adjustment scores can be used to monitor progress in systemic therapy. 伴侣的自体分化是否可以预测婚姻适应度？ 本研究以拓展后的Bowen的系统性多世代理论分析了468名意大利被试的个人自体分化的不同发展轨迹如何影响感知婚姻适应度。这一研究也探索了全部样本、男性子样本和女性子样本里, 自体分化的哪些方面最能预测感知婚姻适应度。修订版的自体分化量表（修订版）和婚姻适应度量表（DAS）用于调查自体分化的不同组成部分（情绪反应性, 情绪中断, 情绪融合, 和主体定位）以及婚姻适应度的不同层次。分析结果显示情绪中断这一维度和婚姻适应度存在最强烈的负相关。本研究侧重考察自体分化过程在研究和临床实践中对理解夫妻关系动态的重要性。 对实务工作者的启示 在婚姻治疗初期, 可以对自体分化进行评估, 用于探测自体分化特定的不良适应模式。 在治疗过程中可以使用有关分化过程的数据, 用于增强主体定位或者减少情绪反应性和情绪中断。 自体分化和婚姻适应度得分可以在系统治疗中用于检测进度。 关键词：夫妻关系；代际传递；自体分化；婚姻适应度