The Greeks believed in the “Theory of the Four Temperments”. That is, we all possess levels of different fluids in our body (blood, phlegm, yellow bile and black bile) and an imbalance of one could lead to an imbalance in a person’s temperament. However, now we know this has no influence on a person’s temperament. Put simply, a person’s temperament is how they respond to something emotionally. Studies have shown that the temperament of an infant never changes over time but only matures as we age. Most psychologists recognize four different temperament types. Sanguine or explorer types are usually lively, optimistic, carefree and love adventure. These types usually do well as entertainers. Phlegmatic or negotiator types are people who are loyal and loving. They tend to be peacemakers and avoid conflicts. Their main goal is to seek harmony. People of this temperament usually make great counselors. Choleric or director types have a temperament that dislike small talk and would rather be with people who share a common interest. Small talk is very boring to them. These people make goals and stick to them. They do well in engineering and programming. They are analytic and logical and are distant companions. Melancholic or builder are more traditional. Love family, friends and seek to contribute to the community. They are orderly and accurate and do well in management positions. They are not depressed as the word may suggest but cautious and quality orientated. Of course, this is a very simple way of defining a person’s temperament and we do tend to be a bit more complicated. As a result, these 4 divisions have recently been subdivided into 16 which suggests that although we are strongest in a certain temperament, we can actually possess attributes of another group.