He has worked with injecting street addicts in Vancouver's notorious Downtown East Side, methadone users in Vancouver clinics, middle class addicts at Simon Fraser University, and drug using rodents in his psychopharmacology laboratory, better known as "Rat Park". His two books on addiction are Peaceful Measures: Canada's Way Out of the War on Drugs (University of Toronto Press, 1990) and The Globalization of Addiction: A Study in Poverty of the Spirit (Oxford University Press, 2010). He is presently working as a political and social activist in East Vancouver with "A Community Aware," and the "Canadian Centre for Policy Alternatives" and finishing a book on the history of psychology for Cambridge University Press. His website is globalizationofaddiction.ca