Peronality

Extrovert v.s. Introvert
Intuitive v.s. Sensory
Feeling v.s. Thinking
Perceiving v.s. Judging

4 categories... suggest 16 different personality... perhaps... that is not for all...
as the webpage states, everyone has one of these in them!

http://www.haleonline.com/psychtest/

Try it out and enjoy analysing yourself...