We saw signs too from an early age in DS, but not everything was advanced and his development was very uneven. So His IQ score at age 3.5 was overall average, even though he was advanced in some areas of the test. At age 6, everything was just shifted up about 20 points. I think it was a combination of the test being more accurate, but he also was developing at a more rapid pace than other kids his age. They were slowing down and he was just getting started in terms of speech/language at least.
If he had the same test again right now almost 2 years later, I think his verbal score would probably be higher and his PRI score would be the same or lower.
