A savant, by definition, is somebody who has a disability and, along with that disability, has some remarkable ability. Prodigies and geniuses have the remarkable abilities that the savant shows, but they do not have a disability. So, by definition, a savant includes someone with a disability, and a prodigy or genius are people who have these remarkable skills but they do not have a disability.

I think one of the problems with the definition of autism is we keep expanding it. It started as "early infantile autism", and then it became "autism", and now it's "autism spectrum disorder". I'm not opposed to that from the standpoint of trying to broaden our vistas, and so forth. But from a research point of view, the term autism is lost in specificity.

Savant syndrome, characteristically, consists of left hemisphere dysfunction coupled with right hemisphere emergence, and what you see in the savant are basically right brain skills.

I have a fairly strict definition of early infantile autism. That is not to say that people who don't meet that classic description don't have autism, but we might do well to narrow our definitions, and our samples, down to groups that are very similar, because I think you're more likely to find the cause.

The ways in which acquired savants show up are usually the same ways that congenital, or non-acquired, savant syndrome shows up. They tend to show up in the same areas: music, art, math, visual, spatial skills, and calendar calculating, although calendar calculating probably isn't quite as prominent in that group. They tend to show up quite quickly, or sort of explode on the scene and they then tend to have an obsessive sort of forceful quality about them in the same way as savant skills. So they tend to show up in the same ways.

When you first try to learn to ride a bike, you work very carefully at keeping your balance, and trying to keep one pedal in front of the other, and all that, and all of a sudden, ah, you know, I got it. And that's true of skiing, or it's true of all kinds of things.

There does seem to be a higher educational level in parents of autistic youngsters, and I guess that's something that we need to look into.