by Psychologists examine the evidence on consensual non-monogamy, relationship satisfaction, and outcomes
An Evidence Base in Development
Research on consensual non-monogamy — relationship structures in which all partners agree to sexual and/or romantic involvement with additional partners — has expanded substantially since 2010, driven by increased visibility of CNM relationships and the recognition that a meaningful proportion of adults practice or have practiced some form of CNM. Amy Sheff’s research estimates that approximately 20 percent of Americans have engaged in CNM at some point, and that roughly 4-5 percent are currently in CNM arrangements.
The methodological challenges of CNM research are substantial: self-selected samples, definitional variation (polyamory, swinging, open relationships, and relationship anarchy are distinct structures with different psychological dynamics), and the absence of longitudinal data on how CNM relationships evolve over time and what proportion succeed on participants’ own terms. The research that exists should be interpreted with these limitations in mind.
What the Research Shows
Studies comparing relationship satisfaction between monogamous and CNM individuals find similar mean satisfaction levels in both groups, with variation within each group that is larger than the difference between them. CNM individuals report lower jealousy on average than researchers hypothesised before studying the population — but also report higher relationship complexity and more communication demands. Research by Terri Conley and colleagues finds that CNM individuals report higher satisfaction with certain relationship qualities, including trust and time spent with partners, while reporting similar levels of relationship commitment.
The research does not support either the dismissive view that CNM relationships are inherently unstable or the advocacy view that CNM relationships are superior to monogamous ones. They are different structures with different costs and benefits that suit different people and different relationship contexts. The honest research summary is that some people thrive in CNM structures, some people in monogamous structures, and that both can be practiced in ways that produce satisfaction or in ways that produce harm, depending on factors including communication quality, genuine consent of all parties, and the match between structure and individual psychology.
Clinical Considerations
Sex therapists working with CNM couples and individuals report that the most common presenting issues are jealousy management, time and resource allocation across multiple relationships, and the re-emergence of insecure attachment patterns under the complexity of multiple relationship demands. The Modern Intimacy practice works with CNM clients explicitly. The clinical literature on CNM-affirmative therapy is growing. The evidence base is sufficient to inform competent clinical work. It is not yet sufficient to support strong claims about long-term outcomes.
SOURCE: https://bohiney.com
