Gifted Issues Discussion homepage Forums Identification, Testing & Assessment Siblings more than 10 points apart??

My kids have FSIQs that are about 18 points apart. But their GAIs are only 8 points apart. The older one has dyslexia and ADHD. And remarkably, when you take the highest scores from the different times he's taken the WISC-IV, the older one's GAI is identical to the younger one's. I mean, I know you're not supposed to do that, but I think it's interesting, and it reinforces my belief (which is based on knowing them and having homeschooled both of them) that their underlying intelligence is the same.