Leonard Sax, M.D., Ph.D.

After earning his bachelor's degree in biology from MIT, and then an M.D. and a Ph.D. (in psychology) from the University of Pennsylvania, Leonard Sax completed a three-year residency and then launched a family medical practice in a suburb of Washington DC. He practiced in the same town for 18 years. During that time, as he watched his own patients grow from toddlers to tweens to teens, Dr. Sax became convinced that gender differences among children - both between the sexes, as well as variations among girls and among boys - are more important, and more hardwired, than is generally recognized. His first-hand clinical experience, supplemented now by his visits to more than 200 communities around the United States, Canada, Australia, New Zealand, and the United Kingdom - led him to write a series of articles, and three books, on the importance of gender in child and adolescent development. In 2008, Dr. Sax hung up his stethoscope in order to devote himself full-time to 'being a better Dad and a better husband' - and also in order to have more time to study the emerging science of sex differences. His peronal web site is www.leonardsax.com.