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maximine stitzer

Maxine Stitzer, Ph.D

Professor of Psychiatry and Behavioral Science, Johns Hopkins University School of Medicine
Johns Hopkins Bayview Medical Center
Phone: (410) 550-5044 or 550-0042

Maxine Stitzer has long maintained an extensive grant-supported research program focused on both pharmacological
and behavioral approaches to the treatment of substance abuse and tobacco dependence. A primary interest has been
in developing and testing contingency management interventions that can motivate positive behavior change in drug
abusers enrolled in methadone or drug-free treatment.”   Past, Present, Future (slide show) 

Stephen T. Higgins, Ph.D
Professor of Psychiatry & Psychology, University of Vermont Human Behavioral Pharmacology Lab
University of Vermont
Phone: (802) 656-9615

Stephen Higgins research has been funded by NIH/NIDA, and he has served as Principal Investigator on two recent
studies: Treating Cocaine Abuse:A Behavioral Approach, and Voucher-Based Incentives to Treat Pregnant Smokers.

Nancy Petry, Ph.D
Professor of Medicine and Director of Behavioral Cardiovascular Prevention, Calhoun Cardiology Center
University of Connecticut Health Center
Phone: (860) 679-2593

Nancy Petry conducts research on the treatment of addictive disorders, ranging from substance use disorders to
pathological gambling. Her two primary lines of research involve contingency management interventions for the
treatment of substance use disorders and psychotherapies for the treatment of problem and pathological gambling.
Dr. Petry has published numerous articles on the use of incentives in the substance abuse field, and her work has
focused on the use of low cost incentives as a means of increasing retention.

Scott Kellogg, Ph.D
Clinical Assistant Professor, NYU Department of Psychology, Psychotherapist and Research Director,
Cognitive Therapy Center of New York, Clinical Psychologist The Rockefeller University
Phone: (212) 998-7876

Scott Kellogg’s methodology and process of psychotherapeutic healing and transformation has been a driving theme
in both his clinical and research endeavors. In his work with drug-addicted individuals, he has found identity theory
and positive reinforcement strategies to be particularly compelling. Dr. Kellogg helped run a successful large scale contingency management intervention at the New York City Health and Hospital Addiction Treatment Service. Keeping It Positive: Bringing Contingency Management to New York City (slide show)


Kenneth Silverman, Ph.D

Professor of Psychiatry and Behavioral Sciences Director, Center for Learning and Health, Johns Hopkins Bayview
Medical Center, Johns Hopkins University School of Medicine
Phone: (410) 550-2694

Ken Silverman is interested in applications of operant conditioning to address the interrelated problems of poverty
and drug addiction. His NIH-funded research program has focused on the Therapeutic Workplace, an
employment-based reinforcement intervention designed to promote and maintain drug abstinence and
health-related behaviors in chronically unemployed drug dependent adults

Ashli J. Sheidow, Ph.D.
Associate Professor in the Dept. of Psychiatry and Behavorial Sciences, Family Services Research Center
Medical University of South Carolina
Phone: (843) 876-1838

Ashli Sheidow has been NIDA-funded since 2003 for her work developing and evaluating an ecological clinic-based
treatment which includes a parent/child model of privilege based incentives.


Kevin Volpp, M.D., Ph.D.
Director, LDI Center for Health Incentives, School of Medicine, University of Pennsylvania
Phone: 215-573-9718

Kevin Volpp’s work focuses on developing and testing innovative ways of incenting patients using concepts from behavioral economics to examine the effectiveness and cost effectiveness of financial incentives in addressing
tobacco dependence, obesity, and medication non-adherence.


Anthony DeFulio, Ph.D.
Faculty, Center for Learning and Health, Johns Hopkins Bayview Medical Center,
Phone: 410-550-9935

Anthony Defulio is interested in the development and dissemination of contingency management interventions
that target health and social problems correlated with the condition of poverty. Dr. DeFulio is currently working
to extend an employment-based contingency management intervention called the Therapeutic Workplace to
criminal justice settings.


Christine Higgins, M.A.
Dissemination Specialist, Mid Atlantic Node, Clinical Trails Network, Johns Hopskins University
Phone: 410-550-4316

Christine Higgins is trained in the NIDA/SAMAHA Blending Products, PAMI (Promoting Awareness of Motivational
Incentives). In the past five years, she has helped treatment programs within the CTN and elsewhere implement
this EBP, sometimes in combination with Motivation Interviewing, always with the goal of enhanced
engagement and improved retention goals. She created the concept and content for this website as a tool
to disseminate best practices.

John Roll

John Roll, Ph.D.
Associate Dean of Research, College of Nursing, Washington State Univeristy, Spokane, Washington
Phone: 509-324-7223

John Roll is the Director of the Program of Excellence in the Addictions and the Program of Excellence in Rural Mental Health and Substance Abuse Treatment. His work focuses on human behavioral pharmacology, the development and refinement of behavioral interventions, including contingency management, for the treatment of addiction and other psychiatric disorders, as well as technology transfer issues.

John Hamilton

John Hamilton, LMFT, LADC
CEO, Recovery Network of Programs, Inc., Shelton, CT
Phone: 203-929-1954

John Hamilton is the CEO for Recovery Network of Programs Inc., a non-profit behavioral health agency serving the greater Bridgeport com. He has worked in the field of addiction prevention and treatment since 1981. John is a permanent appointee for the National Institute of Drug Abuse (NIDA) Steering Committee, and he played a major role in the production of the PAMI Blending Product.
(link to video)

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