About Patricia Erickson Patricia G. Erickson is Professor of Sociology at the University of Toronto and Senior Scientist with the Addiction Research Foundation. Books by Patricia Erickson Harm Reduction A New Direction for Drug Policies and Programs edited by Patricia Erickson, Diane Riley, Yuet Cheung & Pat O'Hare Harm Reduction A New Direction for Drug Policies and Programs edited by Patricia Erickson, Diane Riley, Yuet Cheung & Pat O'Hare