[quote=Halo]
I think it's a poor test if you're at the border between types, because for about 80% of the questions I wasn't a solid yes or no. If you fall fairly solidly into one type, though, it works well, as you can answer the "yes/no" questions with more certainty and more consistently from test to test, from mood to mood, etc.Elaborate? I've not come across "extravert" before, enlighten me. :P
[/quote]

Yeah, that is true.

Extravert would be the correct spelling in terms of proper Latin, the 'o' is only there for the symmetry to introvert.