UHealth - University of Miami Health System

Howard A. Liddle, Ed.D.

General Information

Howard A. Liddle, Ed.D.


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  • English


  • Director, Center for Treatment Research on Adolescent Drug Abuse
  • Professor, Department of Psychology and Counseling Psychology
  • Professor, Department of Public Health Sciences, Division of Health Services Research & Policy


Research Interests

• Adolescent substance abuse and delinquency
• RCTs and mechanisms of change treatment research
• Dissemination of evidence based therapies in real world substance abuse, mental health, juvenile justice and child welfare systems


1974 Ed.D.
Northern Illinois University
1972 M.S.
Northern Illinois University
1970 B.A.
Saint Leo University



Howard Liddle, EdD, ABPP (Family Psychology) is Professor in the Department of Public Health Sciences, and Director of the Center for Treatment Research on Adolescent Drug Abuse at the University of Miami Miller School of Medicine. A psychologist, Dr. Liddle's research focus is on the development, testing, implementation and dissemination of family based treatment for adolescent substance abuse and delinquency. His research in this area has been funded by a variety of NIDA grants since 1985. Multidimensional Family Therapy (MDFT) is the most researched family-based treatment in the adolescent substance abuse specialty, and MDFT studies and the clinical model are recognized nationally and internationally. Recent and current projects include implementation grants that test the incorporation of a cross system juvenile justice -- substance abuse and HIV prevention intervention in the Conn. state justice system, and a controlled trial testing MDFT in a juvenile justice day treatment school setting. Dr. Liddle’s work has been recognized with career research awards from the American Association for Marriage and Family Therapy, the American Family Therapy Association, the Hazelden Foundation, and the American Psychological Association. The MDFT approach is practiced in clinics around the United States (www.mdft.org). As a result of a successful, multisite, multinational controlled trial of MDFT in five European countries, MDFT is now practiced in these and other European nations.



2013 Distinguished Contribution to Family Psychology Award.

Read more about the award