I'm going to guess it's based on some of the East-West thinking differences outlined by Richard Nisbett in The Geography of Thought (I very highly recommend that book, BTW). I don't remember everything in the book, but I remember he had some stuff in there about why easterners are often less interested in, and have a harder time with, the sort of logical/scientific thinking that LW advocates.
I second the recommendation of The Geography of Thought.
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