The College on Problems of Drug Dependence (CPDD) is the oldest and largest organization in the US dedicated to advancing a scientific approach to substance use and addictive disorders. We actively promote basic scientific research in all aspects of substance abuse, and we facilitate the sharing of knowledge and new discoveries among scientists of diverse backgrounds, both nationally and internationally. We also encourage the application of scientific knowledge to developing new behavioral and pharmacological treatment therapies through collaboration among academia, private industry, and government agencies, and we help shape sensible and effective public policy by providing information and outreach to lawmakers at local, state, and national levels. Mission Statement: The College on Problems of Drug Dependence (CPDD) provides a national and international forum for scientists of diverse backgrounds to advance the understanding of molecular-neurobiological aspects of addictive disorders and, by the application of new scientific knowledge, to improve and develop treatments utilizing novel behavioral and pharmacological therapies. Through associations with academia, government agencies and private industry, CPDD is able to promote scientific discoveries in addictive diseases as well as to inform legislators about their implications for public policy, benefits to society and the need for continued advancement of science and education on addictive diseases. The College also nurtures training and development of basic and clinical scientists in these fields.