How can you tell an ENTJ from an INTJ? I know, this should be easy, but I've been having trouble "typing" one of my friends for a while now. I'm pretty sure he's one of those two types.
He's a hard-working biology student, active in several clubs, has a lot of friends, etc. but doesn't seem to particularly want to manage other people, or have control over them. Isn't that an important thing to ENTJs?
I have two INTJ friends and he doesn't seem quite like an INTJ to me.