If this:
Quote:In the spring of 2005, Cornell University economist Michael Waldman noticed a strange correlation in Washington, Oregon and California. The more it rained or snowed, the more likely children were to be diagnosed with autism.
means that more children were diagnosed with autism during the years that there was a higher yearly average of rain or snow, I'd be more likely to interpret a link with greater rates of autism being diagnosed in those years to be due to an increased amount of certain environmental toxins present in rain or snow (such as those found in acid rain) being reintroduced into the water cycle.
Quote:The more it rained or snowed, the more likely children were to be diagnosed with autism.
The way this is stated, makes it sound like the problem is with the diagnosticians and not the children-in other words, the rain or snow affected the numbers of diagnoses made, whether they were correct or not- which would point to an issue with those making the diagnosis.
Maybe though, the passive sensory input a child receives from watching large amounts of tv acts as a trigger -kind of like strobe lights can trigger seizures in an epileptic. But as is the case in epilepsey, I would think that the genetic predisposition for autism would also have to be present- the organic basis for the disorder to have an appropriate host in which to take root would also have to be present. I'd be surprised if any of these cases involved an entirely normally developing child, whose development suddenly regressed due to watching an increased amount of television.
In most cases of autism, caregivers notice at least slight differences (in preferences, behaviours, or reactions to sensory stimulus) from the very beginning of the child's life, so it would be interesting to read the specific histories of these children to see if that is also the case with these children in these states diagnosed during the years with greater average rain or snow fall.
Quote:Current thinking relates some vaccinations (or possibly he mercury preservatives in vaccines) to autism.
Dadpad, I don't know what the case is in Australia, but in the US and UK that theory has been debunked. The doctor (in the UK) who introduced that theory has been outed as having falsified research and statistics to support his pet theory. If I can find a link, I'll post it.
*But it has been established without a doubt that television watching certainly stunts creativity, energy, etc. in normally developing or developed people of any age, so it's not a good idea to sit your kid in front of the television, regardless-but that's a whole different disorder.