Surrounded by Idiots: The Four Types of Human Behaviour (or, How to Understand Those Who Cannot Be Understood)

by Thomas Erikson

This is the behavior type that Hippocrates in his theory of human temperament called choleric. Nowadays you might call a Red person bold, ambitious, driven, but also potentially hot-tempered, rash, or dominant. You quickly notice a Red person because he doesn’t make the slightest effort to conceal who he is.