That is a very interesting idea. I have never read or observed anything that would lead me to this conclusion. How did you come by it?
Lol is this a polite and sarcastic way of calling me a fucking idiot? Don't worry, I am not offended, a lot of people think I'm a fucking idiot.
I will try to explain why I believe that introversion and extroversion are skills which can be learned:
Introversion, at the fundamental level, is conceptualization. An introvert enjoys ideas, possibilities and thinking about stuff.
Extroversion, at the fundamental level, is using your body and senses in the physical world around you.
Sounds like MBTI, anyone?
I have read that introversion is about 'where you get your energy'. I think that is not exactly correct, I think that an introvert does not
gain energy from doing introverted stuff, rather they
lose energy from doing extroverted stuff, because their nerve pathways for extroverted stuff are less efficient - thus use more energy.
If an introvert and extrovert are both reading the same book, the extrovert would lose energy faster than the introvert, because the introvert has more efficient nerve pathways for reading, which is all about conceptualization (converting words into meaning).
When you say a person has a preference for introversion, what you mean is that the person has a more developed brain in the introversion areas than the extroversion areas. There is no innate preference. A strong introvert can consciously apply effort to being more extroverted, and they will become more extroverted.
A person can certainly be
genetically drawn towards extroversion/introversion. This simply means that they possess talent for extroversion/introversion.
For example, a person is extremely talented in introversion, but very poorly talented in extroversion. This person will develop their introversion very fast, and their extroversion very slowly. They will 'naturally' gravitate towards introversion. This person can, however, consciously decide to develop their extroversion, and neglect their introversion, thus becoming an 'extrovert'.