I've been pondering a bit on that for a while.
I can't make my mind up really.
On one side the numbers are increasing quickly over the last 15 years...
Could it simply be due to better dx? And to the fact that autism is now seen as a vast spectrum these days so more children are being encompassed, included within the spectrum, whether as before only moderate/severe cases were dx as autism ? if that makes any sense.
On the other hand, if the numbers don't add up simply because of better dx, then what is it then? It seems those involved in the research don't really know.
What are your views on that? Thanks.