#Psychology - How the Brain Creates Personality: A New Theory - Are you a mover, a perceiver, a stimulator, or an adapter? Modes of thinking can be understood in terms of how the top and bottom—rather than right and left—parts of the brain interact.

http://www.theatlantic.com/health/archive/2013/11/how-the-brain-creates-personality-a-new-theory/281287/