Katharina Manassis, MD, FRCPC, is Staff Psychiatrist and Senior Associate Scientist at the Hospital for Sick Children in Toronto, where she founded and continues to work in the Anxiety Disorders Program for children and youth. The Program focuses on the development and scientific evaluation of cognitive-behavioral treatments. Dr. Manassis is also Professor in the Department of Psychiatry at the University of Toronto and a member of the Human Development and Applied Psychology Department at the Ontario Institute for Studies in Education. These appointments allow her to supervise graduate students, residents, and fellows in the treatment and study of childhood anxiety. Dr. Manassis leads several funded research studies to better understand and treat childhood anxiety disorders. She has written over 70 papers in professional journals in this field and is the author of two widely read books for parents,Keys to Parenting Your Anxious ChildandHelping Your Teenager Beat Depression, as well as books for child mental health professionals, includingProblem Solving in Child and Adolescent Psychotherapy.