John J. Ratey, M.D. is an Assistant Professor of Psychiatry at Harvard Medical School and Executive Director of Research at Medfield State Hospital in Medfield, MA. He is the co-author of Driven to Distraction and Answers to Distraction. He lives in Wellesley, MA.

Catherine Johnson, Ph.D., is a contributing editor at New Woman magazine, and the author of When to Say Goodbye to Your Therapist and Lucky In Love. She lives in Los Angeles.