OP: Perhaps you're one of those less extroverted extroverts? I would imagine that this is a matter of degree. Extroverts have their introvert moments, and introverts have their extrovert moments too, methinks.
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"Do not argue with an idiot. He will drag you down to his level and beat you with experience." - Greg King
The worst mistake people make in political arguments is assuming that the other side is not trying to do the right thing. This simple oversight makes productive conversation nearly impossible.
Nah, the OP experience does not make a person introverted. I tend to think if you have to ask, then you're probably extroverted. I think a lot of shy extroverts think they are introverts, and I notice some people romanticize introversion because it sounds "deep" to them, so then they think they are introverts since they are not loud & shallow.
Being an introvert does not mean you are quiet all the time either. I can be talkative and animated with people I know well on subjects that catch my interest, but overall I give the impression of being quiet/calm, because I mostly am reserved to conserve energy, and I find myself lapsing into reverie very easily.
"Charlotte sometimes dreams a wall around herself. But it's always with love - So much love it looks like everything else. Charlotte Sometimes - So far away, glass sealed and pretty." - The Cure
I know what you mean. Just today I went to a Luau party where we were watching the US Ghana game, and for the entire time I only spoke a few sentences to one friend of mine. They were all Ss but I found that I had absolutely nothing to talk about with any of them. So I ended up leaving without bothering to tell anyone.
I tend to be quiet in large groups anyway because they're usually dominated by Ss and I just can't seem to lead a conversation with more than 2 of them. I just can't keep up entertaining Ss because I get tired of speaking concretely. However, get me one on one with anyone and it's no problem whatsoever.