Please Explain: Autism

Since the 1980s, the percentage of people diagnosed with autism has risen dramatically, and no one is exactly sure why. Find out how autism affects the brain, and what the latest theories are on how to treat it. Dr. Robert T. Schultz is Director of the Center for Autism Research at the Children's Hospital of Philadelphia; Dr. Kathy Pratt is Chair of the Board of Directors of the Autism Society of America.