When people mention their MBTI it always sounds like gobbledygook to me. I mean, it's four letters none of which mean anything to me. The link from Melinda says at the top "As you probably already know, the Myers-Briggs Personality Sorter is intended to be a general, universal personality ID that divides people into one of sixteen distinct personality types, along axes if introverted (I) or extroverted (E), Sensing (S) or Intuitive (N), Thinking (T) or Feeling (F), and Judging (J) or Perceiving (P)."
Okay, so let's guess what I am? Definitely more Introverted than Extroverted. Definitely more Thinking than Feeling. Definitely not Intuitive. What the heck is the difference between "judging" and "perceiving?" [personalitytest.net says of Judger/Perceiver: "This category deals with how we orient our lives. Judgers are structured, ordered, scheduled, and on-time. They are the list makers. Judgers wake up every morning with a definite plan for the day, and become very upset when the plan becomes unraveled." So that would definitely be a Judger for me.] So without even taking a quiz I feel confident in declaring myself an ISTJ.
I feel like it would make more sense for people to just say that they're more an extrovert than an introvert, or that they're heavily rational in making decisions or whatever, instead of just throwing around acronyms which I then have to go look up. But maybe that's just me.
The two binary tests tell me I'm an ISFJ while the gradated one tells me ISTJ. [Entertainingly, by xeromag definitions that means I'm either a Martyr or the Thought Police :) ] personalitytest.net says of the Thinker/Feeler category: "This category deals with how we make decisions," so I think T is definitely the accurate one.