Is the association of sexual quality with relationship satisfaction really stronger when the sexual relationship is functioning poorly?

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.