Mary-Frances O'Connor is an Associate Professor of Clinical Psychology and Psychiatry at the University of Arizona. Her research focuses on the physiological correlates of emotion, in particular the wide range of physical and emotional responses during bereavement, including yearning and isolation. She believes that a clinical science approach toward the experience and mechanisms of grieving can improve interventions for prolonged grief disorder, newly included in the revised DSM-5. She is the author of "The Grieving Brain."