My research focuses on understanding couple and family relationships. I am particularly interested in how relationship satisfaction changes, the processes underlying these changes, and the individual, couple, and external factors that put relationships at risk for poor outcomes. I am also interested in family and mental health issues among lesbian, gay, bisexual and transgender (LGBT) populations, and have examined family functioning among LGBT adolescents and among same-sex parents and their adoptive children. Across these areas, I am interested in how basic research can inform preventive and therapeutic interventions for couples and families.