Our DS7, like eco's, has an average PSI (with about a 30 point spread between it and VCI / PRI / WMI). At the moment, I think it manifests mostly with his writing and math fluency. He seems to be a slower writer than most, and math facts have not come easily. His reading fluency "exploded" from non-existent to advanced in a matter of 1-2 months, though.

I'm not sure if this is due to his PSI or some of his traits that seem to point in the direction of stealth dyslexia.