Susan J. Bradley, MD, FRCP(C), is a Professor in the Department of Psychiatry, University of Toronto. Formerly, she was Head of the Division of Child Psychiatry at the University of Toronto and Psychiatrist-in-Chief at the Hospital for Sick Children. She is consultant psychiatrist to the Child and Adolescent Gender Identity Clinic at the Centre for Addiction and Mental Health--Clarke Division. Her book Gender Identity and Psychosexual Problems in Children and Adolescents, coauthored with Kenneth J. Zucker, is considered the basic reference work in this area. In addition to research and theoretical interests in gender identity disorder and in affect regulation, Dr. Bradley has had a longstanding interest in parenting and evaluation of parenting programs. Currently she engages in teaching, research, and some clinical work.