In the book Jung categorized people into primary Types of Psychological function.
Jung theorized that the dominant function characterizes consciousness, while its opposite is repressed and characterizes unconscious behavior..
He proposed four main functions of consciousness: Two perceiving functions: Sensation and Intuition Two judging functions: Thinking and Feeling The functions are modified by two main attitude Types: extraversion and introversion.
In the book Jung categorized people into primary Types of Psychological function