tall-p wrote:
I just read this today...
http://www.rescuepost.com/files/diagnos ... e-2010.pdf
Thank you heaps for posting this. It will be another valuable resource for my 2015 project and has a lot of useful references at the end.
One of the issues that is, as yet, completely unaddressed - no work anywhere has been done so far as I know - is that none of the screening instruments have ever been standardised on an older population sample.
To illustrate what I mean by that, for those who are not sure what it's about, I'll use an example of medical research to show why using research findings standardised on one population cannot be directly translated as valid for a different population. Most of the research we have on cholesterol, statins and heart disease has been standardized on middle aged men. The findings were - and are - applied by most of the medical profession to men and women of all ages, as if all the variables are constant for completely different populations. They aren't constant, as more recent researchers have been and are establishing. For example, one very well designed study found that for women aged 65 or older, the best predictor of risk of heart attack was a raised white blood cell count, and cholesterol levels were of little value, though they were relevant to men.
So - none of the Autism/Aspergers screening instruments have yet been shown to be scientifically valid nor reliable for older populations. Diagnosticians who apply them to older clients should be aware of this, though I suspect they are not, or if aware, are not mindful of the issue, as they lack any direction or training in regard to the needs of seniors on the spectrum.