Your Type is
INTJ
Introverted Intuitive Thinking Judging
Strength of the preferences %
67 50 25 33
This type is referred to by Keirsey as "the Mastermind Rational," with Ulysses S. Grant as the prototype and with no more than 1% of the population (but, apparently, several of us FReepers) falling in that category.
http://keirsey.com/personality/ntij.html
I'm surprised to see all the INTJs here myself. I'm not strongly in that category in a lot of ways (22-44-50-1), and have come out ENTJ and INTP before (though INTJ is the usual), but if this is a 1% of the population category, it is fascinating that we have so many of them.
As someone else noted, it would be interesting to see what DUmbasses scored here.