How much difference does six months make on an IQ test? For example, my DS scored in the mid 140's on a verbal section of a test (I did not ask which one) that he was technically six months too young to be taking (he is 4.5). How much does a score adjust in approx 6 months? Can I estimate what the real score would be? I am assuming that it would be higher than the mid 140's if it could have been scored for his age - right?

Hopefully I am making some sense!