Sexual Expression and Subsequent Marital Quality Among Partnered Older Adults.

A great deal of research has linked aspects of couples' sex lives to the quality of their relationships. Yet most of this work is with younger couples. Although sexual frequency is associated with positive marital quality, less is known regarding how sexual expression-sexual attitudes, desires, and behaviors-influences later positive and negative marital quality, particularly in older couples. Using latent class analysis and dyadic data on 620 heterosexual couples in long-term marriages from Rounds 2 and 3 of the National Social Life, Health, and Aging Project, we examined how couple-level configurations of sexual expression influence later marital quality. Generally, the latent classes with more agreement on sexual expression and higher overall sexual frequency were associated with later higher positive marital quality for both wives and husbands. Sexual expression configurations were associated with wives' negative marital quality, not husbands' negative marital quality. Across classes, wives' better mental health and husbands' functional limitations were associated with later marital quality. It is essential for practitioners to recognize the relevance of sexual expression to marital quality in older couples.