Dana,
Interesting research on temperament and intelligence. I'm getting ready to read Carl Jung's Psychological Types and I'm hoping there will be some additional information in there.
I have had occasion to teach students web design at the university level, but it's always been a one day/few hours situation. Many years ago I taught harp lessons. I find teaching very draining, whether it's to a group or an individual. I don't mind public speaking, however. I don't usually seek it out, but I enjoy it. I can also step up and take leadership roles, like chairing a committee, but I find I have to pace myself and not get over involved. For many years I was a manager -- at one point I managed 7 people -- until a career counselor explained how my introversion was not working with my job requirements. I no longer manage anyone and am so thankful. It truly exhausted me and at the time I didn't know why I was so tired at the end of the day. I wasn't a terrible manager, but I had to weigh the cost to my sanity and health against the boost in salary and responsibility. Chosing to let it go was one of the best decisions of my life.
How about you - what kind of committments do you find a challenge as an introvert?