it just depends. i have no problem being the first to approach someone....and starting up a conversation.
you may be on the fence then with the introverted/extroverted. my sister is like that. out of 10 questions, she answered 5 as introverted and 5 as extroverted. on the other hand, out of 10 questions, i answered 1 as introverted and 9 as extroverted.
yeah i beleive i am both. it all depends on situations, circumstances
but as the description said, i don't let people into "my world (deep)" as easily.
that could be an interaction of the introversion and thinking parts of you. bc relying on thinking would make you more likely to say whats on your mind. you would be motivated to get the truth out, inform and set things straight despite your desire to keep things private.