“Extraversion refers to the quantity and intensity of preferred interpersonal interactions, activity level, need for stimulation, and capacity for joy. People who are high in Extraversion tend to be sociable, active, talkative, person oriented, optimistic, fun loving, and affectionate, whereas people who are low in Extraversion tend to be reserved (but not necessarily unfriendly), sober, aloof, independent, and quiet. Introverts are not unhappy or pessimistic people, but they do not experience the exuberant high spirits that characterize extraverts”