David N. Greenfield
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David N. Greenfield

Health & Wellness
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Dr. David Greenfield is the founder and clinical director of The Center for Internet and Technology Addiction and former Assistant Clinical Professor of Psychiatry at the University of Connecticut, School of Medicine, where he taught both Addiction Medicine of the Internet and Sexual Medicine and supervised in the psychiatry residency program. He is also the consulting medical director at the Greenfield Pathway for Video Game and Technology Addiction at Lifeskills South Florida. Dr. Greenfield is a leading authority on Internet and technology addiction, and the author of numerous medical articles and book chapters as well as the book Virtual Addiction, which, in 1999, rang an early warning regarding the world’s growing Internet addiction problem. His recent work is focused on the neurobiology and treatment of compulsive Internet, smartphone, and screen use. He is credited with popularizing the variable reinforcement model (“slot machine” model) of behavioral addictions and the dopamine-behavioral addiction connection. Dr. Greenfield participates in the public, psychiatric, and addiction medicine communities by sharing his expertise through lectures, research, and popular presentations. He has advanced training and board certifications in addiction medicine, clinical psychology, and psychopharmacology. He is a past president of the Connecticut Psychological Association and sits on the board of the Connecticut Association for the Treatment of Sexual Offenders (CATSO), and is a member of the Sexual Medicine Society of North America, the American Society of Addiction Medicine, and the American Psychological Association. Dr. Greenfield holds a PhD in psychology from Texas Tech University, an MA in counseling from New York University, and an MS in clinical psychopharmacology from Fairleigh Dickinson University and he received his bachelor’s degree with honors in psychology from Ramapo College of New Jersey. He completed his internship and residency at McGuire VA Medical Center, Virginia Commonwealth University, and Fairfield Hills Psychiatric Hospital. Dr. Greenfield has his board certification in Clinical Psychology from the American Board of Professional Psychology, and is certified as a NAADAC Master Addiction Counselor; for the last 35 years, he has practiced in West Hartford, Connecticut and also maintains licensure in New York, Massachusetts, and Florida. Dr. Greenfield lectures and consults throughout the United States and abroad, and has appeared on CNN, the Dr. Oz Show, Good Morning America, The Today Show, Fox News, ESPN, NPR, and HBO. He has been featured in U.S. News and World Report, Newsweek, People, Time, Washington Post, Wall Street Journal, and The Economist.
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