I recall reading on some earlier article that prodegies who reach an acclaimed adult level of performance by the age of nine or ten achieve that in chess or music because natural development has kept anyone from writing a novel of that caliber at that, they simply don't have enough experience at life yet to write a novel at that level at that age. We see articles of 12-14 yr olds performing science at that level. This article is saying that these ten child prodegies did not, on average, have very high iqs. What they do have is very high working memory scores. The article also linked them to having close family relatives with autism. I liked the question in the comments, "before we developed chess and pianos what did our ancestors kids with these traits look like, what did they (chess & music prodigys) do?"
