how much research has been done into cross-cultural variation of cognitive biases?
Some research has been done, but not that much. The resources required for such studies is generally pretty intensive. But most of the literature suggests that cognitive biases don't change that much between cultures. For example, the literature on the Monty Hall problem shows that the the answer rates look nearly identical in all tested cultures (which include the US, Britain, China and Brazil among others). This is discussed with further references in Jason Rosenhouse's book "The Monty Hall Problem." I'm under the impression that there's similar literature for confirmation bias, but I don't have any citations off hand.
Disclaimer: I'm still fairly new here, and though I did use the search bar it's entirely possible this has been discussed before. Just point me in the right direction if this is so.
While reading about 4chan's Japanese progenitor website, it occurred to me that I know nothing about the state of rationality in the non-English-speaking world, and more specifically the non-English-speaking internet. Is there a Russian version of SIAI? A Japanese Less Wrong? What about Korean Robin Hansons and Eliezer Yudkowskys?
If we take Religion as any indication of irrationality then America should be one of the least rational countries in the world. So if there are like-minded individuals out there speaking in languages we don't know, are we doing anything to collaborate with them? Do they have their own sequences and their own HPMORs which we could be reading?
And if there are no Singularitarian, Cryonics-Supporting, Utilitarianism-Advocating websites for the majority of the human race, isn't that a huge deal? Aren't Europeans and Asians more likely to be open to rationality, if only because of their atheism? If we want Friendly-AI to be developed, should we be translating the sequences into Chinese and Hindu as quickly as possible?