When you're with me, baby, the skies will be blue for all my life? A dyadic longitudinal study of relationship happiness through midlife

Objectives: Romantic relationships are critically important for the development of a range of psychosocial outcomes across the lifespan. However, relatively few studies have examined change, interdependence, and predictors of relationship happiness within and between romantic partners in midlife. The objectives of the present study are to describe the trajectories of relationship happiness in romantic couples in midlife and how they interrelate between partners, and to examine if children living in the household, work status, and gender predict these trajectories.
Methods: Dyadic latent growth curve models were applied to x waves of longitudinal data from N = romantic couples (Nparticipants: 12,931; Mage = 69, SD = .09: range: 55-87) taking part in the Swiss Household Panel Study (2014-2016).