Thomas J McMahon, PhD

Professor of Psychiatry and The Child Study Center; Program Director, West Haven Mental Health Clinic, Connecticut Mental Health Center; Director of Clinical Research, Connecticut Mental Health Center

Departments & Organizations

Psychiatry: Addictions, Division of | Connecticut Mental Health Center | Psychology Section | Substance Abuse Research

Faculty Research

Predoctoral Internship and Postdoctoral Fellowship in Psychology

Yale Medicine


Thomas J. McMahon, Ph.D. is a Professor in the Departments of Psychiatry and Child Study. He is also Program Director for the West Haven Mental Health Clinic and the Young Adult Service at the Connecticut Mental Health Center. As a clinician, educator, and researcher, he is broadly interested in developmental perspectives on psychopathology and developmentally informed approaches to 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 in the context of parental substance abuse. As an educator, he coordinates training in clinical child, adolescent, and young adult psychology; and he is actively involved in cross-training on substance abuse, family process, and child development within the child welfare, child guidance, and substance abuse treatment systems. As a researcher, he is interested in the impact of parental substance abuse on family process and child development; and he is involved in the development of family-oriented intervention for substance-abusing parents.

Dr. McMahon has been the recipient of several grants from the National Institute on Drug Abuse to explore parenting as a treatment issue for drug-abusing men; and he has been invited by both public and private organizations to participate in consensus panels, research work groups, and advisory groups on substance abuse, family process, and child development.

Education & Training

PhD New York University (1994)
MA New York University (1986)
BSW Temple University (1975)

Honors & Recognition

  • Sidney J. Blatt Award for excellence in clinical work, teaching, and researchPsychology Section, Department of Psychiatry (2013)

  • Stephen Fleck Award for conscientiousness and humanitarianism as a clinician and an educatorDepartment of Psychiatry (2012)

Professional Service

  • U. S. Department of Health and Human Services, Substance Abuse and Mental Health Services Administration. Member of an advisory panel to develop a national strategic plan to promote more gender-sensitive behavioral health services for men. (2013 - Present)

  • American Psychological Association, Society for Clinical Child and Adolescent Psychology (Division 53). Co-chair of a new Special Interest Group on Emerging Adulthood developed to promote research, practice, and training related to young adults. (2013 - Present)

  • American Psychological Association, Education Directorate. Member of the Continuing Education Committee responsible for the development of policy, procedures, and programs for the continuing education of professional psychologists. (2013 - 2015)

  • U. S. Department of Health and Human Services, Substance Abuse and Mental Health Services Administration, Center for Substance Abuse Treatment. Member of an advisory panel to develop a national strategic plan to promote attention to fathering. (2011 - Present)


  • Understanding Substance-Abusing Parents in Systems of Care: An Evolutionary Perspective Alberta Providence., Canada (2011)

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