[unconvinced]

i think that probably all cultures have preferred personality types, which represent the "ideal" members of that society, and which influence the individuals within it when they take MBTI tests; but the true distribution of personality types is probably similar across cultures.

it seems to me that most people in any given culture tend to prefer whatever traits are preferred culturally, whether they really have them or not (they may even really believe that they have those traits when they don't). i think this is true of sub-culturally preferred traits too (and i think this is why there are so many N's online but not in real life--i think most online N's are really S's--they post like S's at least).

this is one of the problems i have with MBTI results, i think they reflect more often what people wish was true about themselves than what actually is true.