Guy Diamond, PhD, is Professor Emeritus at the University of Pennsylvania School of Medicine and Associate Professor at Drexel University in the College of Nursing and Health Professions. At Drexel, he is the Director of the Center for Family Intervention Science (CFIS). Dr. Diamond is the primary developer of Attachment Based Family Therapy (ABFT). He has received several federal, state and foundation grants to develop and test this model. His primary work has been in the area of youth suicide prevention and treatment research. On the prevention side, he has created a program focused on training, screening and triage to be implemented in non-behavioral health settings. On the treatment side, he has focused on the development and testing of attachment-based family therapy, especially for teens struggling with depression and suicide. Much of this work has focused on inner-city low-income families. He has served as the VP of Science for Division 43 of APA and has focused his efforts on increasing the visibility of the Division as a leader in Family Intervention Science in APA. He was a main stage presenter at APA’s 2022 convention.

Along with his co-authors, Drs. Gary Diamond and Suzanne Levy, Dr. Diamond has written the first book on ABFT “Attachment-Based Family Therapy for Depressed Adolescents,” published by the American Psychological Association. ABFT emerges from interpersonal theories that suggest adolescent depression and suicide can be precipitated, exacerbated, or buffered against by the quality of interpersonal relationships in families. ABFT aims to repair interpersonal ruptures and rebuild an emotionally protective, secure-based, parent child relationship. The treatment initially focuses on repairing or strengthening attachment and then turns to promoting adolescent autonomy.