The purpose of this article is to bring empirical evidence to the oft-quoted assumption that sexual quality has a stronger association with the overall relationship when sexuality is dysfunctional as compared to when it is optimal. Using three national samples to analyze a structural equation model, the results verified this assumption with some adaptations. There was an interaction between the association of sexual quality and the overall relationship depending on how sexually satisfied couples were in the sexuality area. However, it was when sexuality was only moderately satisfying rather than at high or low levels that it had the strongest associations with relationship satisfaction. Also, female sexual quality had a significant association with both partner's relationship satisfaction whereas male's sexual quality only had actor effects. Additionally, the sexual relationship had a stronger association with relationship satisfaction and dissatisfaction for couples who reported both low levels of sexual satisfaction and dissatisfaction.

中文翻译：

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当性关系运作不佳时，性质量与关系满意度的关联是否真的更强？

本文的目的是为经常被引用的假设提供经验证据，即与性功能最佳时相比，当性功能失调时，性质量与整体关系有更强的关联。使用三个国家样本来分析结构方程模型，结果通过一些调整验证了这一假设。性质量与整体关系之间存在相互作用，具体取决于夫妻在性领域的性满足程度。然而，只有当性行为只有中等程度的满足感而不是高或低水平时，它与关系满意度的关联才最强。此外，女性性质量与双方的关系满意度显着相关，而男性性质量仅具有演员效应。此外，对于性满意度和满意度均较低的夫妇来说，性关系与关系满意度和满意度有更强的相关性。