IQ in HFA (not AS)

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I just want the information, because I can't find it myself. That said:

Where I live, an individual can only score as high on an IQ test to receive the diagnosis classical autism, high-functioning. Everyone who scores higher is AS, anyone lower HFA to LFA.

Anyone know a source that says what IQ range is acceptable for classical autism, 'HFA'? I heard it's between 80 and 70, but I don't know for sure.

And I do know people elsewhere diagnose differently, I really do, don't tell me again, I just want this for reference on how they diagnose here, because I wonder about a child who doesn't get the diagnosis as being on the spectrum.

The DSM-IV-TR doesn't have an IQ threshold for autistic disorder (it just says that mental retardation is a common associated feature):

Yeah. I have probably PDD-NOS. But my IQ is dreadful.

HFA and LFA are difficult to define because they do not exist as separate categories in the DSM-IV, which is used by psychiatrists, neurologists, psychologists, nurses and social workers in the US. There is only one diagnostic category for Kanner's autism: Autistic Disorder, 299.00.

Technically, HFA and LFA are descriptive terms, not diagnostic terms. Therefore, each professional will have a unique understanding of what they mean. The relationship between AS and HFA is controversial. Some think it these conditions are the synonymous, some think the only difference is in age of language acquisition, some use IQ to differentiate them, and I imagine there are plenty of other interpretations as well.

On the subject of Autistic Disorder and IQ, I read about an interesting study. Apparently, the Wechsler Intelligence Scale for Children (WISC) is considered the standard test for all children, including autistics. This is a verbally and culturally based test. A group of autistic children were given the WISC. Most of them scored in the "mentally ret*d" range. Then they were tested with Raven's Progressive Matrices, a nonverbal IQ test that is designed to avoid cultural bias. Apparently, all but a few of the children scored in the normal or above normal range on that test. Unfortunately, I do not have a link to the study, nor have I read the original research publication. It is mentioned on several ASD sites so it might not be hard to find.

It's called "The Level and Nature of Autistic Intelligence", by Dawson et al. (As in, Michelle Dawson. )

Here it is:

http://psych.wisc.edu/lang/pdf/Dawson_AutisticIntelligence_PS_2007.pdf

Apparently AS minimum is like 88, and HFA is like 70. But neither has a ceiling.

I've never heard of an AS minimum or maximum.
For HFA, I've read a number of scholarly papers (but these aren't the be-all and end-all) that say in the criteria that IQ > 70. So I'm assuming that means there is no upper cutoff - I don't think there's an IQ division between AS and HFA, it's behavioral.

Edit: Behavioral = due to such aspects as language delay, rather than static IQ. Sorry. Not implying anything else.
And I see this is challenged, too. Well, good. I agree with the "potayto-potahto" poster.

HFAs score lower on IQ tests than aspies because their language skills are worse -- not because they're dumber. Einstein was a HFA, and so is Temple Grandin.

I have HFA, and I have an above average iq. When I was younger with HFA, I was slightly above average.

The reason why I don't have Aspergers is because I had LFA when I was young, and although I progressed a lot since then, I can't transform into somebody with Aspergers.

Nobody EVER said HFA and AS differ because of behaviour. I DID say there was NO ceiling. Frankly, by the old measure, Einstein would be HFA.

AS USED to say normal or above average IQ. Today, it says no clinically significant cognitive disabilities besides social. Apparently, 88 is the cutoff. 70 is low, but still considered reasonable, and I have read it is the cutoff for HFA. But HEY, there are HFA AND AS people here with IQs that are close to DOUBLE that, which is good in almost anyone's book.

The IQ range for AS and HFA is the same. The difference is supposed to be with AS not having a language delay. Tony Attwood has challenged this difference.

So, AS vs. HFA - potayto vs. potahto.

I think that you have to have an IQ of over 80 to be considered "high functioning autism." My IQ is pathetic at a -50 or even below. The only thing I do well is type responses on a forum such as this one. I am officially the dumbest person on Earth. Even though they say I have "high functioning autism," I don't think that is possible with an IQ of -50. What is 1+1 equal again? Is it 3853530? I ain't know nothing. I don't have Asperger's but like I said before, high functioning autism diagnosed at the age of 5.