Rob MacCoun

Robert MacCoun

  • Professor of Law
  • Senior Fellow at the Freeman Spogli Institute for International Studies
  • Affiliated Faculty, Center for International Security & Cooperation


559 Nathan Abbott Way

Stanford, CA 94305

(650) 721-3011 (voice)


Robert MacCoun is a social psychologist and public policy analyst who has published numerous studies on a variety of topics, including illicit drug use, drug policy, judgment and decision-making, citizens’ assessments of fairness and morality, social influence processes, and bias in the use and interpretation of research evidence by scientists, journalists, and citizens. A preeminent scholar working at the border of law and psychology, his scholarship involves a mix of experimental and non-experimental empirical research as well as computational modeling and simulation.  His more than one hundred publications include articles in Science, Psychological Review, and journals in psychology, psychiatry, law, and political science. MacCoun’s book with Peter Reuter, Drug War Heresies (Cambridge, 2001) is considered a landmark scholarly analysis of the drug legalization debate.  MacCoun has also written extensively on the military’s “Don’t Ask, Don’t Tell” policy. His analysis of military unit cohesion, which was featured in a landmark RAND study, was influential in the 1993 and 2010 policy debates about allowing gays and lesbians to serve openly in the US military. Prior to joining Stanford's law faculty in 2014, MacCoun was a member of the faculties of the Law School and the Goldman School of Public Policy at UC Berkeley. He has been a visiting professor at Stanford Law School and at Princeton’s Woodrow Wilson School. From 1986 to 1993 he was a behavioral scientist at RAND Corporation, where he served as a staff member at the Institute for Civil Justice and the Drug Policy Research Center as well as a faculty member at the RAND Graduate School of Policy Studies.

MacCoun also holds a joint appointment as a Senior Fellow at the Freeman Spogli Institute at Stanford University, and a courtesy appointment in the Department of Psychology.