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Old 02-13-13, 09:33 AM
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namazu namazu is offline
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Re: this DR Barkley quote states that Neurological tests have no value in the diagnos

I think the reason for this seeming contradiction is that while on a population level (on average), there are differences between groups of people with ADHD and groups of people without, these differences are not sufficiently reliable for diagnosis at the individual level.

So, if you take 100 people with ADHD, the average electrical activity might be lower than the average for a group of 100 people without. But if you take any 1 person with ADHD, their individual electrical activity may or may not be lower than 1 person without ADHD. And it may not even be lower than the average of people without ADHD.

There would likely be too many false negatives and too many false positives.

As imaging techniques and our understanding of the precise mechanisms behind ADHD (which may include several different pathways) improves, imaging-based diagnostics may become more reliable.

But for now, they don't seem to add much value (and they add cost and discomfort) to a diagnosis that can be made using interviews and a thorough medical, social, academic, developmental, and occupational history.
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