My (very soon to be) 4 y/o old is going through evaluations to diagnose a possible learning disability since he's exhibited some concerns in pre-school. The evaluator has said she's sure he has ADHD, but also shows some traits of a child with asperger's syndrome (sp). Since at this time, ADHD is the only 'definitive' diagnosis, I was wondering if some one could tell me some webistes, or books they have read to help them understand it all and how to help my son. Also, do you believe that 4 y/o may be too young to diagnose anything?