A. Thomas McLellan

A. Thomas McLellan is a prominent American psychologist and researcher known for his work in addiction treatment and substance abuse. He is a co-founder of the Treatment Research Institute and has contributed significantly to understanding how to effectively treat addiction. McLellan's research emphasizes the importance of evidence-based practices and the integration of mental health services into addiction care. His work has influenced policies and programs aimed at improving treatment outcomes for individuals struggling with addiction, making him a key figure in the field of public health and addiction recovery.