Treatment Research Institute


collaborationAbout Us

Founded by the same researchers who developed the Addiction Severity Index, the Treatment Research Institute is an independent, nonprofit research and development organization dedicated to science-driven reform of treatment and policy in substance use.

Learn More

Featured Topic


What does change mean to you? Will you accept Tom McLellan’s challenge?

Tom McLellan, TRI founder and chair of the board, has dedicated his life to changing the way addiction is perceived and managed, and has inspired many of us to do the same. We believe that CHANGE is eliminating the stigma associated with addiction. Change is improving the lives of individuals struggling with the disease. Change is protecting the next generation.

“Now, like never before in our history, we have the opportunity to transform the treatment of substance use disorders,” Tom McLellan. With that call-to-action, Tom has pledged to match every dollar contributed to the Treatment Research Institute, up to $40,000!

Now through Dec. 31, 2014, Tom challenges this community to influence and commit to change. With your help, TRI can continue to ANSWER the big questions, ADDRESS the most pressing issues, and provide SOLUTIONS to families and communities affected by substance use problems.

Please help us to meet Tom’s generous challenge. Donate to TRI today and DOUBLE the impact of your gift.

News Headlines

Conrad N. Hilton Foundation awards $1.35 million grant to Legal Action Center and its partners, Treatment Research Institute and Truven Health, to address adolescent substance use care

New York, NY (Dec. 18, 2014) – In an effort to improve adolescent wellness, prevention and early interventions, Legal Action Center (LAC) has partnered with the Treatment Research Institute (TRI) and Truven Health Analytics (Truven Health) to assess how the implementation of the Affordable Care Act (ACA) and Mental Health Parity and Addiction Equity Act…
Read More

Desires, cravings and addiction

TRI’s Dr. Adam Brooks was a guest on WHYY’s Voices in the Family show to talk about new treatment models and options for addiction treatment. Listen to the show on WHYY here.

Substance Abuse and the Affordable Care Act

“The stage has been set for real transformation,” said A. Thomas McLellan, board chairman of the Treatment Research Institute in Philadelphia. “Nobody knows the way this is going to happen, but it is going to happen.” For decades addiction treatment has been separate from primary medical care. Those with the worst symptoms were often sent…
Read More