Robert Ornstein, Ph.D., is a psychologist, brain researcher, and writer. He co-wrote The Psychology of Consciousness, which has sold more than 1 million copies worldwide, and more recently, The Healing Brain.
David Sobel, M.D., M.P.H., is a practicing physician and regional Director of Patient Education and Health Promotion for Kaiser Permanente Northern California. He has written seven books, including The Healing Brain, Healthy Pleasures and Mind & Body Health Handbook. He is the Director for ISHK Center for Health Sciences.