Siobhain O'Riordan, PhD, is a chartered psychologist, a chartered scientist, and founder chair and a fellow of the International Society for Coaching Psychology (ISCP). She is a principle practitioner of the Association for Business Psychology, a felow of the International Stress Management Association UK, a member of the Association for Coaching, an honorary member of the Institute of Health Promotion and Education, and an academic member of the Association of Rational Emotional Behavioural Therapists. She is an ISCP accredited supervisor, a course co-director/trainer on the coaching and coaching psychology programmes at the Centre for Coaching and Centre for Stress Management, UK, and is currently the editor of Coaching Psychology International and the International Journal of Coaching Psychology. Siobhain is also a co-editor of the European Journal of Applied Positive Psychology and the International Journal of Stress Prevention and Wellbeing.

Stephen Palmer, PhD, is one of the leading pioneers in the field of coaching psychology. He is Professor of Practice at the Wales Academy for Professional Practice and Applied Research, University of Wales Trinity Saint David. Stephen is the coordinating director of the ISCP International Centre for Coaching Psychology Research, and founder-director of the Centre for Coaching, London. He is the honorary president and fellow of the International Society for Coaching Psychology, executive editor of the International Journal of Coaching Psychology, and co-editor of the European Journal of Applied Positive Psychology. He edits book series, including Coaching Psychology (Routledge). He has written and edited over 50 books and has published over 250 articles and chapters.