Here's the whole study. What I found most interesting is that they identified 2 different looks, and thought they corresponded to different levels of functioning. It would be much more interesting with adults of all genders.
Blaming it on just lack of muscle tone, as some do here, is not very reliable either because how much muscle tone does any average kid have? They're not old enough for it to make much difference either way.
We can't just outright reject that there may be some facial features that are more common in ASD, as how would we know if not through studies on it? Can't dismiss this or future research based on our own anecdotal data. If the brain is shaped differently, why not other parts? It is not so far-fetched.
Our differences might be because we're more neotenized? As that is a key feature in how humans have evolved that would lead to some very interesting conclusions... It would fit with the already acknowledged bigger head/youthful appearance thing.
http://en.wikipedia.org/wiki/Neoteny wrote:
Neotenous traits in humans
These are neotenous traits in humans: flattened face, broadened face, large brain, hairless body, hairless face, small nose, reduction of brow ridge, small teeth, small upper jaw (maxilla), small lower jaw (mandible), thinness of skull bones, limbs proportionately short compared to torso length, longer leg than arm length, larger eyes, and upright stance.
VAGraduateStudent wrote:
The wide foreheads and wide set eyes thing is stupid because it's common knowledge that people with ASD are more likely to have big heads. No one knows what that means yet. It's just an incidental thing that tends to be true. And of course if you have a big ol' head it makes sense for the stuff ON the head to spread out!
People with autism tend to look younger than other people and are often perceived as being more attractive because of the facial slackness. Or a "relaxed face" might be a nicer way to say this.

Wrinkles don't form as easily and others may see an aspie face as being innocent and passive. I'm sure there are lots of 40+ ladies who would pay a lot of money for an injection of aspie around the eyes! LOL
Haha yes, I guess it is a bit like botox in a way, I read an article speculating that botoxed people would become ~evil~ as they would lose the ability to recognize facial expressions if they could form any themselves. Which of course is untrue. And then there was a trend piece talking about people consciously trying not to make expressions to fool others that they had botox, as in some circles that is apparently a status symbol.

I find it funny that the prevalence of botox, and a more digitized society will make the world look a lot more ASDish in the future