I hope this page helps you understand exactly what personality types are, and why they can be very useful in understanding people. One of the most popular tests of personality type on the internet is the Keirsey Character Sorter , which will determine first temperament and then type. Links for each temperament are at the bottom of the page, and you can get to individual types through the temperament page. Also below are descriptions of each of the eight functions. Take a look at my Type Dictionary to familiarize yourself with all the jargon.
Introverts gain their energy from thoughts, things and ideas.
They tend to use up a great deal of energy being around people, causing them to often avoid large crowds. Sensates gain information in concrete patterns. This type is not so much concerned with fantasies and the future as with the practical and the present. They are the most likely to bring iNtuitives back down to earth, and have them think realistically. Thinkers are more likely to embrace logic and reason when making a decision.