| Summary: | Including diverse participants in couple intervention studies is critical for developing an evidence base that informs best practices for all potential clients. Research has shown that subgroups of clients respond differently to different interventions and that interventions that have been adapted to fit the needs of a given population are more effective than non‐adapted interventions. Unfortunately, couple intervention samples often exclude participants with marginalized identities and culturally adapted couple intervention research is limited. The lack of information about best practices for diverse client subgroups perpetuates mental and relational health disparities. We conducted a systematic review to examine recruitment strategies and sampling characteristics of diverse races/ethnicities, incomes, ages, and sexual identities. We reviewed articles published between January 2015 and December 2020. Articles were eligible for inclusion in our review if they implemented an intervention with couples in the United States. Of 4054 articles identified, 54 articles were eligible for our review. Findings suggest that couple intervention studies lack diversity across multiple identity domains (i.e., races/ethnicities, incomes, ages, and sexual identities). Further, descriptions of recruitment strategies are often vague, limiting opportunities to better understand methods used to recruit diverse samples.
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