This is the best laid-out explanation of personality. It is described in what is called Myers-Briggs personality traits, which gives definitions for how we are inclined to react to things in our world.
If you are interested in figuring out which personality type you might be, here are a couple suggestions. The first gives great explanations of each letter, based on what your personality preferences are.
If you’d like to learn more about your own personality type, http://library.defiance.edu/learningstyles/myersbriggs
The second is a little bit easier to understand, with similar concepts:
What did you find out? Did something surprise you?
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