1 About this module

• Prerequisites:
• Objectives:

2 What is a function?

In personality traits, a function is a way that the mind works. There are four functions.

• Thinking (T): “the mental process of interpreting what is perceived.”
  • application of logic, calculations, deduction, and analysis
• Feeling (F): “the psychological function that evaluates or judges what something or someone is worth.”
  • emotions
• Intuition (N): “the psychic function that perceives possibilities inherent in the present.”
  • inspiration, making connections across concepts, seeing patterns in choas
  • theories, conjectures
• Sensing (S): ”the psychological function that perceives immediate reality through physical senses.”
  • touch, smell, sight, hearing
  • fact based

The four functions are not orthogonal in the sense that they are fully independent. The four functions are organized as two pairs.

• N/S pair
  • empty
• T/F pair
  • used to evaluate

3 Direction/Intensity

Each function has two directions: introverted (i) and extraverted (e). Introverted means a function is directed inward (toward self) and usually more focused and intense (think of a laser beam). Extraverted means a function is directed outward (toward the rest of the world) and usually broader and not intense (think of a wide beam head light).