The PDA measures Emotional intelligence through a scale called SELF-CONTROL. It measures the “ability to reflect” of the person before they act, the process of reasoning and judgement. People who have a high Axis of Self-Control tend to be rational and more cold and controlled. They base their behaviour and responses are based on logic and facts. People who have a low Axis of Low Self-Control tend to be more emotional, sensitive and spontaneous. They base their behaviour and responses on their feelings and emotions.