autism (AW-tiz-um)—a long-term problem in the brain and nerves. Many people with autism have trouble understanding others and being understood. They often have trouble making friends. They may like to do one thing over and over again.

developmental-behavioral specialist (duh-vel-up-MEN-tul bee-HAY- vyer-ul SPESH-uh-list)—an expert in the ways children grow and develop.

referral (ree-FUR-ul)—a note or phone call from a doctor sending you to see someone.

speech therapy (THAIR-uh-pee)— treatment for people who have trouble talking. There are many different speech problems, and many kinds of speech therapy.