There was a study that showed that the common trait among child prodigies was not so much high IQ but exceptional working memory.
As PP said, I wouldn't be too concerned with his low PSI since it doesn't seem to be affecting his real life performance.
That's interesting about the working memory. My son's not a prodigy, but it's good to have the working memory strength. I thought I'd seen this somewhere so I googled "child prodigies working memory" and got this thread from this forum.
http://giftedissues.davidsongifted....3822/Prodigies_have_large_working_m.html
