Agback said:An extravert prefers dealing with concrete things in the physical world. An intravert prefers dealing with ideas and abstractions.
die_kluge said:He gave me a couple of good links that I updated the first post with -
This test seems really accurate:
http://typefocus.com/
And this site has a really good summary of all the types:
http://www.personalitypage.com/high-level.html