Your child will be seen for a total of 20 study-therapy visits (as long as they are in the intervention group) over a 4 to 6 month training period. Each visit will be about two hours long, and will occur once a week during the training period. The study visits will be "one-on-one" sessions between your child and the therapist. Each study visit will be include two 50-minute training sessions with a 15-minute break between them. During training sessions, your child will participate in several activities. Each activity will only last about 15 minutes each. If your child gets tired during a session, the therapist will let him/her take a short rest break.