Does ethnic diversity increase risk of Austism?

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Do we know of any culture, society or race where autism spectrum disorders don't exist or exist in a markedly less way? This cannot include places where they are by default under-diagnosed.

I think it's saying that mixed breed dogs are less wanted as pets, and so are more often abandoned and end up in shelters. It's only when they get to the shelters that they develop behavioural problems from their tough situation. These problems are usually fear/anxiety related and are not related to autism.

On another note, pure breed dogs are far more likely to have physical health problems, such as hip dysplasia, due to generations of inbreeding.

The studies all seem to say it's spread evenly across the planet and ethnicity. Sounds like this is a wild guess though, as some countries diagnose far less of their population to have ASDs, and the studies almost certainly wouldn't have assessed population incidence in "lost tribes" in remote areas.
I thought a genetic hereditary link had been established but, while being more than 66%, it doesn't seem to account for all cases of ASD. So does autism just pop up out of nowhere, or is there a recessive gene hiding in everyone inherited from some ancient ancestor?

Ok well I will turn it around then and ask, could the opposite cause autism? In other words could people who are too genetically similar increase the risk of autism in their children? For example, two people who are shy, social awkward, and anxious marry and have kids. Could this encourage these recessive traits and produce children who are so socially inept that they are deemed "autistic"?

Is it just me or is it rare to see Asian children with disabilities...especially autism? I'm half Asian and half European and I just don't see too many Asian people with disabilities here and I've moved around a lot. I mean I have, but it's not common around here.

This may sound like a weird and politically incorrect question, but do you think that ethnic mixing could increase the risk of autism or aspergers syndrome in a society? I was reading this article about mixed breed dogs vs. pure breeds and I found one paragraph in the article interesting : The Great Debate: Are Mutts Healthier Than Purebreds?



This got me wondering, does this same phenomenon happen in humans? If someone was a "mutt" with lets say a father who is Italian and mother who is Irish does that increase ones risk of autism, aspergers, or adhd? Might that person not pick up on social cues because they are a unique "breed" and have trouble understanding anyone else? In my opinion this could effect theory of mind because your ability to understand other people has something to do with the fact that your mind works the same way. If you grow up around people who are genetically dissimilar to you then you might have trouble understanding or relating to them and you might turn inward.

I am also not just referring to people of different nationalities or races, but really any kind of mixing of genetic qualities that could make someone dissimilar to the people they grow up around. For example, inheriting a unique set of personality traits could make it difficult for someone to relate others. Possible? If this were true we should see higher rates of autism in countries that are genetically and culturally diverse. Anyone have data on this?