Leung Wai Yin, Amy, PhD. received her doctoral degree in clinical psychology from Fuller Graduate School of Psychology, California, and completed her Clinical Psychology Internship at the New York University-Bellevue Hospital Center in New York. She is the first Certified Sandplay Therapist  and Teaching Member of the International Society for Sandplay Therapy (ISST) in Hong Kong and she is the founding and current chair of the Hong Kong Sandplay Therapy Association (HKSTA) - hksandplay.org

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She also founded and coordinated the first Jungian Psychology Group in Hong Kong from 1999 to 2003, and the group later developed into the Hong Kong Institute of Analytical Psychology (HKIAP). Dr. Leung has served as a clinical psychologist at the Adolescent Medical Center of the Queen Elizabeth Hospital. As the founder of the Progression Psychological Practice, she is specialized in psychological assessment, individual and family therapy. Dr. Leung has worked extensively with people who suffer from depression, anxiety, schizophrenia, eating disorders, sexual orientation conflicts, severe marital problems and with adolescents who are in crisis.