ToughDiamond wrote:
Ellingtonia wrote:
Asperger's syndrome, as defined by any diagnostic criteria, is really a collection of behavioural symptoms. There are undeniably many people who have these symptoms, and so Aspergers undeniably exists.
It would be a lot more certain if we did something like this:
Take half of the supposedly diagnostic traits of AS (funny eye contact, special interests, or whatever) and find as many people as you can who seem to have all those traits. Now see whether those same people tend to have the other half of the traits. If they do, to a statistically significant level compared with the general population, then that would be some measure of the "realness" of AS. Rather like the way we know that blonde hair and blue eyes tend to occur in the same people, so we could probably demonstrate that the blonde-haired-blue-eyed "syndrome" was real, i.e. there was a distinct population satisfying both diagnostic criteria and another different, distinct population satisfying neither, with not as much in between as would be the case if the two traits were not really associated together.
Is that logical and factually about right?
I saw a video talking about a study similar to what you describe a few months ago. I'll scour the web to find it again tomorrow morning after I get some sleep (its nearly 2am here in Oz)
Basically though, they split aspergers up into three areas of dysfunction, found that a certain proportion of the general population, let's say 1/10, suffered in each individual category. Using basic statistics, if there was zero correlation between the three areas, then the proportion of people that suffer in all three should be 1/1000 (1/10 x 1/10 x 1/10 = 1/1000). The actual proportion of people suffering in all three (and thus having aspergers) was much higher, like 1/100. Not quite as simple as the blond-hair blue-eyed example, but good enough for me.
To be clear though, I've made up those figures to illustrate their method. I'll try to find the real figures and the video in the morning.