Brett Marroqui?n is an assistant professor of psychology at Loyola Marymount University in Los Angeles, California. He received his Ph.D. in clinical psychology from Yale University under the mentorship of Susan Nolen-Hoeksema, and completed a National Institute of Mental Health (NIMH) postdoctoral fellowship in biobehavioral issues in physical and mental health at the University of California, Los Angeles. His research examines interpersonal influences on emotion, emotion regulation, and cognitive processing in healthy functioning and mood disorders. His current work focuses on the roles of social contexts and romantic relationships in emotional adjustment to negative events, including cancer diagnosis and treatment, and how effective or ineffective support from partners affects couples physical and mental health.