Committed romantic relationships between two individuals with Substance Use Disorder (or dual-SUD couples) are prevalent. Dual-SUD couples have poor treatment engagement and outcomes. Research has established a reciprocal link between relationship dynamics (e.g., conflict, intimacy) and substance use. Thus, the couple's relationship presents a distinct social context for both partner's substance use. Dual-SUD couples face unique challenges due to substance use being a shared behavior that may serve as a rewarding source of compatibility, closeness, and short-term relationship satisfaction despite it being at the cost of other alternative sources of substance-free reinforcement. Yet, treatment options for these couples are scarce. Dual-maladaptive health behaviors (e.g., dual-substance use) are challenging to treat; however, theory and preliminary research suggests that transformation of couple's joint motivation toward adaptive health behavior change may result in a more satisfying relationship and improved treatment outcomes for both individuals. The current paper reviews the extant literature on dual-SUD couples from theoretical, empirical, and treatment research and proposes an expanded paradigm regarding how we understand dual-SUD couples with the aim of informing basic research and treatment development.

中文翻译：

---

双重物质使用障碍夫妇：综合回顾和提出的理论模型


两个患有药物使用障碍的人（或双 SUD 夫妇）之间的忠诚恋爱关系很普遍。双 SUD 夫妇的治疗参与度和结果较差。研究已经建立了关系动态（例如冲突、亲密关系）和物质使用之间的相互联系。因此，夫妻关系为双方的物质使用提供了独特的社会背景。双 SUD 夫妇面临着独特的挑战，因为物质使用是一种共同行为，可以作为兼容性、亲密性和短期关系满意度的奖励来源，尽管它是以其他无物质强化的替代来源为代价的。然而，这些夫妇的治疗选择很少。双重适应不良的健康行为（例如双重物质使用）很难治疗；然而，理论和初步研究表明，夫妻共同动机向适应性健康行为改变的转变可能会给双方带来更令人满意的关系并改善治疗结果。本文从理论、实证和治疗研究方面回顾了关于双重 SUD 夫妇的现有文献，并提出了一个关于我们如何理解双重 SUD 夫妇的扩展范式，旨在为基础研究和治疗开发提供信息。