Thinking types:

IT — Introverted Thinking
The introverted thinking type is governed above all by an inner model of truth. This person does not primarily ask whether an idea is useful, socially accepted, or immediately effective, but whether it is internally correct, precise, and conceptually sound. Because attention is turned more toward the structure of thought than toward outer adaptation, this type can seem detached, difficult to read, taciturn, or even arrogant, especially to people who expect quick personal responsiveness. At their best they produce deep, synthetic, original ideas that move toward what Jung calls timeless or primordial validity; at their worst, those ideas can become cut off from reality, increasingly private, rigid, and embittered, with the person defending subjective truth as though it were their own person.

IT(N) — Introverted Thinking + Extraverted Intuition
This is best understood as an introverted thinker whose secondary adaptation comes through possibility-seeking. The core still remains inner logical coherence, but intuition gives the mind a speculative, inventive, and exploratory quality, so the person is not only refining concepts but also leaping toward implications, patterns, and unseen alternatives. Compared with plain IT, this version is usually more interested in hypotheses, reinterpretations, hidden meanings, and theoretical innovation. It often looks like a person building a private intellectual system while constantly testing how far it can be extended into new territory.

IT(S) — Introverted Thinking + Extraverted Sensing
This is an introverted thinker with a more concrete and reality-tethered auxiliary. The person still relies on inner principles and independent judgment, but sensation gives them more contact with facts, materials, immediate evidence, and practical mechanics. Instead of moving mainly through speculative possibilities, they often want to see how something actually works, what is really there, and whether the structure of a thing holds up under direct contact with reality. This can produce a cool, technical, quietly exact type who seems less abstract than IT(N), more precise in application, and more interested in correct operation than in intellectual novelty for its own sake.

ET — Extraverted Thinking
The extraverted thinking type organizes life according to objective logic, outer facts, accepted principles, and impersonal standards. This type wants action, systems, and judgments to rest on what can be established, demonstrated, ordered, and applied in the world. Jung describes this type as making an objective formula into a ruling principle, not just for personal conduct but often for the environment as well, so there is frequently a strong concern with structure, efficiency, correctness, and implementation. At their best they are productive, constructive, and capable of giving coherence to a mass of facts; at their worst they become formula-bound, over-systematizing, and inclined to force life into a rigid scheme of what ought to count as reasonable, good, or valid.

ET(N) — Extraverted Thinking + Introverted Intuition
This is an extraverted thinker whose secondary process gives strategic depth and long-range vision. The dominant drive is still to structure reality, produce results, and impose order through objective judgment, but intuition adds an eye for latent trends, future developments, and underlying direction. This can make the person look more visionary and less merely administrative than plain ET, because they are not only organizing facts but also trying to foresee where events are heading and how a system can be shaped toward an emerging outcome. Compared with ET(S), they usually care less about precedent and more about trajectory.

ET(S) — Extraverted Thinking + Introverted Sensing
This is an extraverted thinker supported by a more experience-based, stabilizing auxiliary. The person still prefers objective criteria, order, and workable systems, but introverted sensation makes them more attentive to what has proven itself over time, to accumulated experience, and to the concrete texture behind the facts. They often seem steadier, more methodical, and more conservative in implementation than ET(N), since they trust tested impressions and established reality more than emerging possibilities. This can produce a highly dependable, sober, practical character who wants not just to decide efficiently but to decide on the basis of what has enduring weight.

Feeling types:

IF — Introverted Feeling
The introverted feeling type is guided by inner values, inner images, and a private sense of what has worth. This type does not primarily adapt feeling to the object or to collective standards; instead, feeling remains inward, selective, and often difficult to express. Jung describes it as deep, hidden, and easily misunderstood: the person may appear quiet, inaccessible, indifferent, or cold, while in reality possessing intense feeling that develops inwardly rather than outwardly. At their best they preserve authenticity, depth, and fidelity to inner value; at their worst they become withdrawn, negatively judging, hard to reach, and so privately selective that others feel dismissed or devalued without ever understanding why.

IF(N) — Introverted Feeling + Extraverted Intuition
This is an introverted feeling type whose auxiliary gives imaginative reach and exploratory movement. The person’s life is still governed by inward value and personal meaning, but intuition opens side paths, symbolic possibilities, psychological alternatives, and unusual connections. Compared with IF(S), this version is usually more idealistic, more interested in what could be, and more drawn to people or situations that resonate with an inner image rather than with immediate sensory reality. It often produces a quietly searching type who seems emotionally private yet mentally alive with possibilities and meanings.

IF(S) — Introverted Feeling + Extraverted Sensing
This is an introverted feeling type supported by immediate lived experience. The person still evaluates everything through inward value, but sensation gives more contact with atmosphere, aesthetics, taste, physical presence, and the concrete emotional tone of the moment. Compared with IF(N), this version is usually less speculative and more experiential, more likely to care how something feels in direct reality rather than what possibilities it symbolizes. The result is often a reserved but vividly selective person whose inner values are expressed not through broad theory but through personal taste, embodied response, and concrete loyalty or dislike.

EF — Extraverted Feeling
The extraverted feeling type orients by objective values, shared standards of appropriateness, and the emotional requirements of the situation. Feeling here is adjusted to what is fitting, harmonious, culturally meaningful, and relationally workable, so this type often appears warm, responsive, tactful, and socially intelligent. Jung credits extraverted feeling with supporting social life, culture, and institutions, because it helps people participate in shared life with correctly adjusted valuations. At its best this produces charm, consideration, and relational competence; at its worst, especially when over-adapted to the object, feeling loses warmth and becomes performative, sterile, fickle, or merely socially correct without inward truth.

EF(N) — Extraverted Feeling + Introverted Intuition
This is an extraverted feeling type with more depth of implication and future-sense than the plain social harmonizer. The dominant process still adjusts to people, atmosphere, and shared value, but intuition gives perception of what relationships, groups, or emotional patterns may become. This can make the type more guiding, interpretive, and symbolically aware, less focused on immediate social smoothness alone and more on the deeper meaning or direction of human situations. Compared with EF(S), it is usually more visionary, less tied to precedent, and more likely to shape collective feeling around an implicit sense of destiny or significance.

EF(S) — Extraverted Feeling + Introverted Sensing
This is an extraverted feeling type supported by familiarity, continuity, and concrete human memory. The person still seeks harmony and proper relatedness, but introverted sensation makes that harmony more rooted in what feels known, tried, stable, and humanly reassuring. Compared with EF(N), this version is more grounded in real bonds, remembered obligations, traditions, roles, and routines of care. It often gives the impression of steadiness, hospitality, practical warmth, and a preference for maintaining living forms of human connection rather than reimagining them.

Intuitive types:

IN — Introverted Intuition
The introverted intuitive type is oriented toward inner images, symbolic developments, and archetypal patterns rather than toward immediate outer facts. Jung describes this type as perceiving the transformations of the unconscious and sometimes foreseeing possibilities or events because of its relation to deep inner patterns. Such a person often seems detached from ordinary reality, absorbed in visions, meanings, and impressions that others cannot yet see, and may appear as a dreamer, seer, artist, or eccentric. At their best they give form to profound images and anticipate new realities; at their worst they become aloof, enigmatic, and disconnected from the body, the moment, and practical life.

IN(T) — Introverted Intuition + Extraverted Thinking
This is an introverted intuitive whose auxiliary gives structure, articulation, and strategic application to vision. The core remains perception of inner patterns and symbolic developments, but thinking helps the person systematize what they see, express it in conceptual form, and shape it into plans, models, or interpretations. Compared with IN(F), this version is usually more impersonal, more analytical, and more inclined to turn insight into a framework rather than a relational message. It often looks like a visionary mind trying to give objective form to what is first seen inwardly.

IN(F) — Introverted Intuition + Extraverted Feeling
This is an introverted intuitive whose insights seek human expression and relational relevance. The person is still guided by visions, images, and inner patterns, but feeling helps interpret what those perceptions mean for people, values, atmosphere, and moral or interpersonal significance. Compared with IN(T), this version is often more evocative, more concerned with what the vision asks of people, and more likely to communicate insight in a way that moves or organizes others emotionally. It gives the image of someone who senses deep meanings and then tries to translate them into shared human importance.

EN — Extraverted Intuition
The extraverted intuitive type is oriented toward possibilities in the external situation. Jung describes this type as constantly seeking fresh outlets and new openings, treating every ordinary circumstance as something that must be opened up, surpassed, or escaped from if it becomes too fixed. Such a person has a keen nose for what is new and in the making, often showing great enthusiasm for new people, projects, or conditions, only to abandon them once their possibilities are exhausted. At their best they are inspiring discoverers of openings and futures; at their worst they are unstable, restless, morally under-anchored, and too ready to sacrifice continuity, commitments, or people to the next emerging possibility.

EN(T) — Extraverted Intuition + Introverted Thinking
This is an extraverted intuitive whose explorations are supported by inner analysis. The dominant process still chases possibilities, openings, inventions, and shifts in the external world, but thinking helps sort, discriminate, and intellectually refine those possibilities. Compared with EN(F), this version is often drier, more experimental, and more interested in how possibilities fit into a coherent internal structure rather than how they align with personal or relational value. It produces a type that looks mentally agile, quick to improvise, and inclined to treat life as a field of problems to crack and alternatives to test.

EN(F) — Extraverted Intuition + Introverted Feeling
This is an extraverted intuitive whose search for possibility is filtered through inner value and personal resonance. The person still seeks novelty, alternatives, and new directions, but feeling gives a more selective sense of what possibilities are worth pursuing and which ones feel inwardly alive or dead. Compared with EN(T), this version is usually more idealistic, more person-centered, and more concerned with authenticity or emotional significance than with pure conceptual play. It often appears enthusiastic, exploratory, and original, yet guided by an inwardly private sense of what matters.

Sensation types:

IS — Introverted Sensing
The introverted sensation type is oriented not to the mere surface of objects but to the subjective image and depth-impression they evoke. Jung says introverted sensation apprehends the background of the physical world rather than its surface, spreading over the object the patina of old experience and even a shimmer of what is still unborn. This makes the type hard to read from the outside: they may seem calm, passive, self-controlled, or detached, while inwardly they are responding intensely to impressions in a way that is not directly proportional to the objective stimulus. At their best they preserve depth of impression, atmosphere, and subtle continuity of experience; at their worst they become so subjective in their sensing that objects lose apparent relevance and the person seems unrelated, withdrawn, or almost mysteriously self-contained.

IS(T) — Introverted Sensing + Extraverted Thinking
This is an introverted sensation type whose private impressions are supported by objective order and discrimination. The person is still guided by subtle, inwardly weighted experience, but thinking helps classify, arrange, and apply those impressions in a consistent and usable way. Compared with IS(F), this version is more analytical, more technical, and more inclined to give explicit structure to what it perceives. It often looks like a restrained, observant, highly exact person whose contact with reality is deep rather than flashy, yet who also wants that reality organized correctly.

IS(F) — Introverted Sensing + Extraverted Feeling
This is an introverted sensation type supported by relational adjustment and social warmth. The inner life is still shaped by personal impressions, atmosphere, and quiet depth, but feeling helps the person respond more gently and harmoniously to others. Compared with IS(T), this version is more receptive, more soothing, and more likely to express itself through care, tone, and quiet accommodation rather than through classification or technical order. It gives the impression of someone who lives deeply through subtle experience yet tries to keep the outer field humane, moderate, and emotionally workable.

ES — Extraverted Sensing
The extraverted sensation type is oriented toward concrete reality, immediate actuality, and the intensity of direct experience. Jung calls this the most realistic type in the plain sense of responsiveness to objective facts, because such a person lives through what can be seen, touched, enjoyed, and immediately encountered. They are not primarily governed by abstract judgment or future interpretation but by what is present and sensuously real, often seeking the fullest possible experience of life through actuality itself. At their best they are vivid, grounded, and capable of refined enjoyment and precise realism; at their worst they become purely stimulus-driven, short-range, and dismissive of anything that does not present itself as concrete fact or immediate experience.

ES(T) — Extraverted Sensing + Introverted Thinking
This is an extraverted sensation type whose realism is supported by internal precision and detached analysis. The dominant drive is still to engage directly with reality, but thinking gives a tactical, discriminating, problem-solving quality that makes the type seem sharper and more controlled than plain ES. Compared with ES(F), this version is more likely to reduce situations to mechanics, leverage, and effective action, and less likely to center personal or relational value. It often appears as a highly present, competent operator who trusts what is there and then cuts through it with cool judgment.

ES(F) — Extraverted Sensing + Introverted Feeling
This is an extraverted sensation type whose direct engagement with life is guided by personal liking, taste, and selective inner value. The person still wants vivid contact with reality, pleasure, immediacy, and experience, but feeling gives a more individual style, aesthetic selectivity, and private sense of what feels right or wrong. Compared with ES(T), this version is more personal, more expressive through taste and emotional tone, and more concerned with the quality of experience than with pure technical handling. It often looks like someone who wants life to be fully lived, but in a way that remains true to an inwardly felt preference rather than mere brute stimulation.