Bradley was certified in medicine in 1967. She earned her specialty licenses in psychiatry and child psychiatry in 1972. In the late 1970s, Bradley founded the Child and Adolescent Gender Identity Clinic at the Clarke Institute of Psychiatry. In collaboration with her co-author Zucker, she saw over 400 cases of children and adolescents with gender identity disorder and related issues. Bradley served on the American Psychiatric Association DSM-IV Subcommittee on Gender Identity Disorders. She was Clinical Director of the Department of Psychiatry from 1984 to 1988 and Psychiatrist-in-Chief and Head of the Division of Child Psychiatry at the University of Toronto from 1988 to 1998. Psychologist Darryl Hill stated, "Zucker and Bradley believe that reparative treatments can be therapeutic for several reasons. They believe that treatment can reduce social ostracism by helping gender non-conforming children mix more readily with same sex peers and prevent long-term psychopathological development. Reparative therapy is believed to reduce the chances of adult GID which Zucker and Bradley characterize as undesirable." Clinicians have called Bradley's therapeutic intervention "something disturbingly close to reparative therapy for homosexuals." However, Bradley and Zucker respond that prevention of homosexuality was never a goal in their treatments and cite a lack of empirical evidence for the most effective approach. Others, like author Phyllis Burke, object to any diagnosis of GID in children, considering it to be "child abuse." Journalist Stephanie Wilkinson said Zucker characterized Burke's book as "the work of a journalist whose views shouldn't be put into the same camp as those of scientists like Richard Green or himself." Bradley has argued that gender identity disorder in children is sometimes rooted in serious family problems, underlying anxiety disorders or psychological trauma and might need other treatment than change of gender. Because her therapeutic intervention for gender identity disorder in children is controversial, a 2007 celebration honoring Bradley's career was disrupted by transgender protesters. Bradley's longstanding interest in parenting and evaluation of parenting programs led to her involvement in initiating The Parenting Alliance and the Infant Mental Health Promotion Project. The Council for Early Child Development named Bradley a Community Champion for her work developing the Early Years Centres.
Selected publications
According to the Web of Science Bradley has published over 50 articles in peer-reviewed journals. These articles and her books have been cited over 700 times, giving her an h-index of 16.
