I just recently learned about this from a Facebook quiz a friend sent me. I wish I would have known about this stuff earlier for it helps explain so much about my relationships, past and present, especially with my parents (both IJ's). I'm amazed every time I read a description of my personality, because it is so dead on! I'm a 25 year old male ESFJ. I probably won't be able to contribute a whole lot because I am so new to this, but I'm really interested in learning more. I have an Aunt who is a psychologist that I recently visited with who explained a lot of this to me.