My research seeks to uncover this variability to identify what makes relationships work when they are actually working and for whom they work the best. Extending this line of thinking further, my recent work has sought to determine the extent to which the antecedents and consequences of relationship quality depend on when in the lifespan they are experienced, as the behaviors that promote adjustment earlier in one’s relationship may undermine it in the later years as couples face increasingly difficult, albeit entirely normative, health challenges.