The Myers-Briggs Type Indicator (MBTI) is a psychometric questionnaire designed to measure psychological preferences in how people see the world and make decisions. Extrapolated from the typological theories put forth by Carl Jung, the MBTI is meant for use in non-clinical populations and emphasizes the value of naturally occuring differences. The MBTI is used in a number of setting including team building, executive coaching, personnel selection, career counseling and leadership development. The test yields results expressed as a four letter "type" that touches on preferences in lifestyle, attitudes and decision-making style. I'm including a link below to an assessment that approximates the MBTI. While it is not the "genuine article" it does provide a decent ballpark guess as to your type (and it's free). Explanations of the various types are plentiful on the internet, and I'd also welcome any "type" questions you may have at firstname.lastname@example.org.