Jung's Theory.

The influence of both genetics and heredity factors alongside upbringing, culture and experience are recognised as influencing an individual’s personality. Jung's work in this field extended way beyond understanding this general proposition about personality and he became one of the greatest thinkers of his time to have theorised about life and how people relate to it. He drew inspiration and guidance from the ancient models like astrology and Greek theology especially in regarding the Greek "Temperament theory" or the "four humours theory." The ancient Greeks 400BC believed in 'four temperaments'', however it was works of Hippocrates a Greek physician who developed it into a medical theory. He believed that certain human moods, emotions and behaviours were caused by body fluids called "humors": blood, phlegm, yellow bile, and black bile. These four body fluids were also linked to certain organs and illnesses. Later in history a Greek physician called Galen (AD 130-200) developed the first typology of temperament of these humors in his dissertation; Detemperamentis’ In the dissertation Galen mapped a matrix (Matrix is the place or point which something else originates) of hot\cold and dry\wet types taken from the four humors. He proposed that the balance of bodily fluids in the individual influenced different behaviour and in the ideal personality with an even deposition the complementary characteristics or warm-cool and dry-moist were exquisitely balanced. However, he went on to categorised four less ideal types of the bodily humors these he named: 1. The sanguine (buoyant type)
2. The phlegmatic (sluggish type)
3. The choleric (quick-tempered type)
4. The melancholic (dejected type) Each Galen believed was the result of an excess of one of the humors that produced, in turn, the imbalance