ანოტაცია: Author Thomas Erikson explains that there are four key behavior types that define how we interact with and perceive the people around us. Understanding someone’s pattern of behavior is the key to successful communication. Erikson breaks down the four kinds of behavior types—Reds who are dominant and commanding, Yellows who are social and optimistic, Greens who are laid back and friendly, and Blues who are analytical and precise—and explains how to identify and interact with each type of person.