Extraverted Thinking Type (Te dominant)
This type of man elevates objective thinking into the ruling passion of his life. He is typified by the scientists who devotes his energy to learning as much as he can about the objective world .His goals are understanding natural phenomena, the discovery of natural laws, and theoretical formulations. The most developed type of extraverted thinker is Darwin or Einstein. The extraverted thinker tends to repress teh feeling side of his nature, and so he may appear to others as being impersonal, or even cold and haughty. If the repression is too strict, feeling is forced to find devious and sometimes abnormal ways of affecting his character. He may become autorcratic, bigoted, vain, superstitious, and impervious to criticism. Lacking feeling, the quality of his thinking tends to become sterile and impoverished. The extreme case if the “mad scientist” or the Dr. Jekyll who periodically turns into a psychopathic monster.
C. Extraverted Feeling Type (Fe dominant):
this type, which Jung observes is more frequently found in women, subordinates thinking to feeling. People of this type are apt to be capricious because their feelings change as frequently as the situation changes. Even a slight variance in the situation may cause a change in their feelings. They are gushy, emotional, ostentatious, and moody. They form strong attachments to people, but these attachments are transitory, and love easily turns into hate. Their feelings are fairly conventional, and they readily participate in all the latest fads and fashions. When the thinking function is firmly repressed, the thought processes of the extraverted feeling type are primitive and undeveloped.
Introverted Feeling Type (Fi dominant)
This type is also more commonly found among women. Unlike their extraverted sisters, who parade their emotions, introverted feeling persons keep their feelings hidden from the world. They tend to be silent, inaccessible, indifferent, and inscrutable. They often have an air of melancholy or depression. But they can also give the impression of having inner harmony, repose, and self-sufficiency. They often seem to others to have a mysterious power or charisma. They are people of whom it is said, “Still waters run deep.” Actually, they do have very deep and intense feelings which sometimes erupt in emotional storms, to the astonishment of their relatives and friends.
Introverted Sensation Type (Si dominant):
Like all introverts, the introverted sensation type stsands aloof from external objects immersing himself in his own psychic sensations. He considers the world to be banal and uninteresting in comparison with his inner sensations. He has difficulty expressing himself except through art, but what he produces tends to be devoid of any significance. To others he may appear to be calm, passive, and self-controlled, when actually he is not very interesting because he is deficient in thought and feeling.
Extraverted Intuitive Type (Ne dominant):
People of this type, commonly women, are characterized by flightiness and instability; they jump from situation to situation to discover new possibilities in the external world. They are always looking for new worlds to conquer before they have conquered old ones. Because they are deficient in the thinking function, they cannot diligently pursue their intuitions for very long but must jump to new intuitions. They can render exceptional service as promoters of new enterprises and causes, but they cannot maintain an interest in them. Routine activities bore them; novelty is their life’s sustenance. They tend to fritter away their lives on a succession of intuitions. They are not dependable friends, although they enter into each new relationship wit great zest for the possibilities it holds. As a consequence they unwittingly hurt people by their lack of sustained interest. They take up numerous hobbies but soon get bored with them, and they have difficulty keeping a job
Introverted Intuitive Type (Ni dominant)
The artist is a representative of this type, but it also contains dreamers, prophets, visionaries, and cranks. An introverted intuitive person is often regarded as an enigma by his friends, and as a misunderstood genius by himself. Since he is not in touch with external reality or with conventions, he is unable to communicate effectively with others, even with those of the same type. He is isolated in a world of primordial images whose meaning he does not understand. Like his extraverted counterpart, he jumps from image to image looking for new possibilities in them but never really develops any of his intuitions. Since he is unable to sustain an interest in an image, he cannot, as an introverted thinker does, make any profound contribution to an understanding of psychic processes. He can, however, have brilliant intuitions which others may then build upon and develop.
From: “A primer of Jungian Psychology.”