• I think that if I could do any sort of research of autism that I wanted to do, at this point I would take a sample of classic, early infantile autism persons and compare them with what I call "classic late onset autism", individuals. I think we will find that the cause of those youngsters with autism who have autism from birth is probably different than those who have late onset autism.

    "Conversations on Creativity with Darold Treffert, Part II: D". Interview with Scott Barry Kaufman, April 13, 2011.