Yeah, I had some leadership training last year that involved multiple personality tests. I'm absolutely an extrovert. It wasn't even an "on the fence" kind of result.

I'm not an expert on psychological motivations, so I can't speak to the feelings or motivations of others, just myself.

Most of the time these results are things I find during introspection after social events are over. I can spend 4 hours in a social situation and be one of the drivers that keeps things going. It's later, when I'm alone and meditating, that I discover just how exhausted I was.