I am a sociology major, unlike you I have done a lot of research on this topic. The mind is an amazing thing, you wouldn't believe what some societies believe and hold as customs. I'm not saying that it is purely nature or nurture. But from what I have seen in my studies nurture seems to have a mush stronger impact.See, I do not agree. The more I talk about type, the I see that people think that this is a nurture type of thing and don't give the nature side any attention. If we evolved from monkeys, at which point did the facets develop? How did they develop? And if they are PURELY societal (which I can't imagine is true), when did society develop to encompass mbti? On a phylogenetic tree does the **** genus encompass feeling? Extraversion? Others? I have yet to do research on the topic, so the only evidence I have is that that I can think of, such as brain size, parts of the brain, development of logical areas, emotional areas, etc.
Natural selection on MBTI types does not pass on cognitively desirable traits to the next generation.Evolution and MBTI. This can include, but is not limited to:
Which types are better at different time periods.
Historical types and how society dealt with them.
Why sensors are more abundant than intuitive people.