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?
I was assuming you meant something like "willing to go against the dominant norms in one's society" by it, which is close related to Openness.
I'd expect those people joining/starting new religions to be more open, thus the operalization of your hypothesis in terms of big5-Openness. There should probably be studies on smaller religions, such as new age, which might aptly be called new.