I actually LAUGHED at this study!! We have been able to trace DEFINITE Asperger's tendencies back several generations after the dx of my nephew (and absolutely NO diabetes or metabolic problems WHATSOEVER in our family!!!). I personally feel that these researchers are "grasping at straws". Remember when they first felt that autism was the fault of non-attentive mothers?? YIKES!!
As Tony Atwood says, the world simply would NOT function without the GIFTS
of the higher-functioning autistics. And, as a former teacher, I can tell you that the lower-functioning autistics give us "gifts", too -- several have taught me to STOP, look, and listen to the beautiful world surrounding me.
So, GO WITH THE FLOW -- know what you know -- and if need be, IGNORE the so-called "experts"!