Here's the original news release from OSU:
http://researchnews.osu.edu/archive/chldprod.htm
At least the original didn't swap Genius for Prodigy.

The symptom overlaps between various spectrum type disorders and gifted has bubbled up here many times. The prodigies + working memory isn't new data.

Overall, I'm with you, LNEsMom, questioning how some of these diagnostics are done would be interesting.