Matthew There has been a fair bit of discussion earlier re I.Q, check the archives. I have a 2.5 year old daughter who most certainly more advanced than other toddlers her age and older. She is currently showing an interest in reading, knows her ABC and can count quite well. There have been some studies done suggesting people with CAH have higher I.Q's, then there are other studies counteracting this. There appears to be no definite info available, but all I know is that I have an extremely bright and energetic child. Regards Karen