Abstract
This study examined the development of the therapy alliance over the first six sessions of couple therapy using a dyadic latent growth curve. The role of relationship adjustment, symptom distress, and attachment to alliance development were also examined. Participants were 165 couples in a treatment-as-usual setting. The alliance increased over the first six therapy sessions for males and females with males following a curvilinear pattern of growth. Additionally, female relationship adjustment was related to initial alliance levels for females while symptom distress was related to female alliance development. Male attachment avoidance and female attachment anxiety were related to male initial alliance. Couple therapists need to pay attention to intake level of female adjustment, symptom distress, and attachment—along with male attachment, as these are related to alliance development. Therapists should also be mindful that female and male alliance follow a different developmental trajectory.