This article presents research included in the symposium at the 2001 Research Society on Alcoholism meeting in Montreal, Canada. James Lange was the organizer and provided the introduction of this article. Gayle Boyd was the chairperson, and Mary Larimer was the discussant. The presentations were (1) Defining binge-drinking quantities through resulting BACs, by James E. Lange and Robert B. Voas; (2) Environmental predictors of heavy episodic drinking events, by John D. Clapp; (3) Parents' continuing role in college binge drinking, by Rob Turrisi, Racheal Taki, and James Jaccard; and (4) Motivations of binge drinkers, by Mark B. Johnson, Robert B. Voas, and James E. Lange. The summary and discussion were provided by Mary Larimer.