One of the many significant issues with the MBTI is that it's a typology: you're an E, an N, or whatever else; it's all-or-nothing. As anyone who knows even a l

One of the many significant issues with the MBTI is that it's a typology: you're an E, an N, or whatever else; it's all-or-nothing. As anyone who knows even a little bit about actual research psychology can tell you, people don't work like that. Any decent system of examining human personality NEEDS to deal in spectrums and grey areas. If anyone is curious about an actually valid personality measurement construct, check out Costa and McCrae's Big Five Personality Index (http://en.wikipedia.org/wiki/Big_Five_personality_traits http://en.wikipedia.org/wiki/Big_Five_personality_traits). It was designed based on decades of experimentation and research (rather than the other way around), and it's been experimentally validated time and time again. It's basically the gold standard for personality psychologists researching trait theory. It's a whole lot less sexy than the MBTI, and you won't walk away being able to say "I'm type XYZ!" (which is a major appeal of the MBTI), but the things that actually work rarely are.