Gharbin Bern's Key Ideas from Why You Act the Way You Do
by Tim LaHaye

Originally conceived by Hippocrates, the Temperament theory divides people into four basic categories. They are the sanguine, choleric, melancholy and phlegmatic.

Each type has it's characteristic strengths and weaknesses.

People with this temperament type are superextrovert, lively, buoyant and receptive by nature. Feelings rather than reflective thoughts predominate to form his decisions.

They usually never lack friends and can genuinely feel the joys and sorrows of persons they meet.

Weakness: Weakness of will and lack of discipline make it easier for them to be deceitful, dishonest and undependable.

A Choleric is active, quick, strong-willed and very independent. They tend to be decisive and opinionated. Theses people thrive on activity as they do not need to be stimulated by their environment, but rather stimulate their environment with endless ideas.

Weaknesses: On the bad side they are extremely hostile people. If their strong will is not brought into control by proper parental discipline as children, they develop angry and tumultuous habits.

The richest of all the temperaments. They are very analytical, self-sacrificing and perfectionist type.

Prone to be introvert by nature. They are given to a variety of moods since their feelings predominate.

Weaknesses: The most damaging weaknesses are their negativism and pessimism.

Calm, easygoing, never-get-upset individual with such a high boiling point that he almost never becomes angry. Very likeable by nature.

Weakness: The most obvious weakness they have is their apparent lack of drive and ambition. They are inclined to selfishness.