Susan Tanner is a consultant psychologist and has specialised in the treatment of anxiety disorders and depression for over 25 years. She has created numerous treatment programmes for both inpatient and community settings as well as working as a consultant to private hospitals, corporations, businesses and government agencies. She has conducted research, been a clinical educator in the School of Psychiatry, UNSW, and has been an invited guest speaker at international conferences. She currently works in private practice in Sydney.

Dr Jillian Ball is a clinical psychologist who specialises in the treatment of depression, bipolar disorder, anxiety and eating disorders. Over several decades, she has worked as a conjoint senior lecturer and conducted clinical research at the School of Psychiatry, UNSW. She has published numerous articles and presented her research at international conferences. She is co-author of When Eating is Everything (1991) and Eating Disorders: A Guide for Family and Friends (1993). Jillian also has a private practice in Sydney.