Thomas J. McMahon, Ph.D. is a Professor in the Departments of Psychiatry and Child Study at the Yale University School of Medicine.  He is also Program Director for the West Haven Mental Health Clinic at the Connecticut Mental Health Center.  As a clinician, educator, and researcher, he is broadly interested in developmental perspectives on psychopathology and the development of clinical intervention offered in community-based settings.


As a clinician, he is interested in the psychological assessment and treatment of children, adolescents, and young adults with a history of child abuse or neglect, particularly within family systems affected by addiction.  As an educator, he coordinates graduate and postgraduate training in clinical child, adolescent, and young adult psychology; and he is actively involved in cross-training on addiction, family process, and child development within the child welfare, child guidance, and  addiction treatment systems.  As a researcher, he is interested in the impact of parental substance use on family process and child development; and he is involved in the development of family-oriented intervention for men and women receiving treatment for a substance use disorder.  He is particularly interested in parenting as a treatment issue for men receiving behavioral health services; and he is interested in ways family-oriented intervention can be used to complement medication-assisted treatment for opioid addiction.


Dr. McMahon has been the recipient of several grants from the National Institute on Drug Abuse to explore parenting as a treatment issue for men using opioids and other drugs; and he has been invited by public, private, and professional organizations to participate in consensus panels, research work groups, and advisory groups on addiction, family process, and child development.  He has published more than 70 peer-reviewed papers and book chapters, primarily on addiction and family process; and he is presently a member of the editorial boards for Child Maltreatment, Advances in Child and Family Policy and Practice, Journal of the American Academy of Psychiatry and the Law, and Psychology of Men and Masculinity.  He is also presently a member of the American Psychological Association (Divisions 37, 43, 51, and 53), the American Professional Society on the Abuse of Children, the Society for Research on Child Development, and the College on Problems of Drug Dependence.




Committee Membership



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American Professional Society on the Abuse of Children  |  APSAC Center for Child Policy  |  2017