Dr. James MacKillop is internationally recognized for his major contributions to the scientific study of addiction. In community and clinical populations, his work has elucidated the psychological determinants of addiction, including the roles of drug reinforcing value, self-regulatory capacity, alternative reinforcers, and social networks. Concurrent with his behavioural research, he has advanced the field by characterizing the underlying neural and genomic foundations of these processes. Critically, his work has pioneered the translation of insights and methods from basic research into real-world clinical innovations to advance patient care. These diverse contributions have made Dr. MacKillop a global leader in addiction research.