Jung Typology Test
Thirty-two questions, four either/or scales, about twelve minutes. Answer for what you actually do, not the version you would prefer, and at the end you get your type named in Jung’s own vocabulary, the four-letter code that goes with it, and how strongly each of the four scales came out.
Introverted Thinking Type (INTJ) — Grandmaster (LII)
Company costs more than it returns and the recovery happens alone — Introversion. You reach for the pattern under a situation before its details: Intuition. Decisions run on criteria you could defend to a stranger, Thinking. Once made they are shut, and that is Rational.
In Jung's own vocabulary that is the Introverted Thinking Type. ISTJ shares the phrase; the four letters INTJ, a code in the MBTI typology pattern, separate the two. CoreTypes' own name for this type is Grandmaster, and its three-letter code is LII.
The inward pull buys long uninterrupted thinking and can leave you silent when somebody needed a word. Intuition finds the shape of a problem early, sometimes a shape the evidence never supports. Thinking produces calls that survive argument, at the cost of reading cold in the dispute you meant to settle. Closing fast finishes things, and outlives its usefulness.
Rational and Irrational were Jung's own words for his function pairs. Scoring closure as a separate fourth dichotomy was an addition of Katharine Briggs' and Isabel Myers'; his book does no such thing.
Nobody is a pure type: each scale had a quieter opposite pulling against it, and this names the side that led. The quieter side is not missing; it is what does the checking when a pattern turns out wrong.
Extraverted Feeling Type (ESFJ) — Beacon (ESE)
Jung's own name for this combination is the Extraverted Feeling Type. ENFJ carries it too — the four letters ESFJ, a code in the MBTI typology pattern, are what tell them apart. CoreTypes' own name for it is Beacon, three-letter code ESE.
Underneath it: energy spent on and refilled by other people, Extraversion. Attention anchored in what is in front of you, Sensing. Decisions weighed by who they land on, Feeling. And a question is meant to end up answered: Rational.
You keep rooms running and spot the practical thing nobody else did, the missing chair, the person nobody asked. The bill is a thin private week, planned around everybody else's. Sensing holds you so close to the present arrangement that a change of direction lands as a shock. Feeling makes you somebody people can live with a decision from, and makes an unpopular line hard to hold.
Rational and Irrational are Jung's own words for the two pairs of his functions. Scoring that opposition as its own fourth axis came later, from Katharine Briggs and Isabel Myers.
No one is a pure type; this names the side in front today; the other one is still in there. Somebody at that table has been meaning to thank you for a year and has not got round to it.
Extraverted Intuitive Type (ENTP) — Catalyst (ILE)
You think at the speed of the room and see three moves past the one being discussed. That combination gets a great deal started. It also means the last idea rarely gets finished before the next arrives, and half of what you see clearly is still unverified.
Underneath: Extraversion, Intuition, Thinking, Irrational. Jung's own name for that shape is the Extraverted Intuitive Type; the four letters ENTP, a code in the MBTI typology pattern, place you inside it. CoreTypes calls this type Catalyst, three-letter code ILE.
Thinking keeps you honest in an argument — you will drop your own position when the reasoning fails — and that same detachment reads as scorekeeping to people who wanted agreement. An open closure keeps you correctable long after everybody else committed, and leaves good options unchosen past their moment. Rational and Irrational are Jung's own words for his function pairs; making that opposition a scored fourth dichotomy was Briggs and Myers' work, decades later.
ENFP carries the same Jungian phrase, which is what the letters are for. Nobody is a pure type: every scale had an opposite pulling on it, and the type names the side that leads. The idea you dropped in March is still the best one you had this year.
Introverted Sensing Type (ISFP) — Harmonist (SEI)
Energy comes back in quiet and small rooms — Introversion. Attention stays with what is physically here: the texture, the temperature, the thing actually said. That is Sensing, and it makes you hard to sell a story to; it also lets a direction the details haven't shown yet pass you by.
Decisions go to the people in them before they go to the rule: Feeling. And you would sooner keep a question open than close it, which is Irrational. Between them you get somebody easy to live with, and a life where the thing that mattered never quite got decided.
Jung's own name for this shape is the Introverted Sensing Type, which ISTP also carries; the four letters ISFP, a code in the MBTI typology pattern, are the difference. CoreTypes calls this type Harmonist, three-letter code SEI.
Rational and Irrational are Jung's own words for his pairs of functions; scoring the opposition as a separate fourth dichotomy was added in the 1940s by Katharine Briggs and Isabel Myers. And no one is a pure type — this is a relative lead, and a person is a good deal more than a lead.
Ask somebody who lives with you which of the four they would have guessed. The gap between their answer and this one is worth sitting with.
Introverted Intuitive Type (INFP) — Flamekeeper (IEI)
Jung's own name for what came out is the Introverted Intuitive Type. The four letters INFP are a code in the MBTI typology pattern; CoreTypes has its own name for the same type, Flamekeeper, three-letter code IEI.
Introversion on energy means the good thinking happens after everybody has gone home, and the people who would benefit from hearing it often don't. Intuition on perception means you read a situation for what it could become, and only then for what it is — early, and on evidence that sometimes never arrives.
Feeling settles decisions on who they touch: loyal in a way people remember, and genuinely pained by a fair rule that cannot be bent. Irrational closure keeps you revisable, and lets the calendar make some choices for you. Rational and Irrational are Jung's own function words; scoring them as a fourth dichotomy was Katharine Briggs' and Isabel Myers' addition, not his book's.
Nobody is a pure type. Every one of the four scales had an opposite pulling on it, and this result names the side that led today.
INTP produces the same Jungian phrase by a different route, which is what the letters are for. What this cannot measure is how much of that loyalty has ever been asked for out loud.
Extraverted Sensing Type (ESTP) — Warlord (SLE)
Extraversion sends you at the room, never away from it, and Sensing keeps you in the concrete present: what is on the table, now. Together they make you fast and hard to bluff. The cost sits in the same place — a plan that only pays off in two years struggles to hold you.
Thinking is what settles your calls: the criteria, not the company. It earns respect and loses warmth in the same conversation. You leave things open instead of closing them, so you can turn on new information at speed, and some decisions stay unmade until circumstances make them.
Rational and Irrational are Jung's own labels for his two pairs of functions; scoring that as an independent fourth dichotomy was Briggs and Myers' addition. His vocabulary gives you the Extraverted Sensing Type — a phrase ESFP carries too, which is what the four letters ESTP, a code in the MBTI typology pattern, are for. CoreTypes calls this type Warlord, three-letter code SLE.
No one is a pure type, and this is not an identity: it is which pole led on four scales. Anyone who has watched you take a room apart in ten minutes already has three of your four letters. The fourth is the one you keep.
Extraverted Feeling Type (ENFJ) — Herald (EIE)
You think out loud and with other people in the room, Extraversion, and what you track is the pattern under the particulars: Intuition. It makes you good at saying what a group has not managed to say yet. It also means quiet stretches leave you flat, and that you back a picture of where this is going before the evidence is in.
Jung's own name for that shape is the Extraverted Feeling Type, shared with ESFJ; the four letters ENFJ, a code in the MBTI typology pattern, separate them. CoreTypes calls this type Herald, and its three-letter code is EIE.
Feeling on decision puts the people affected into the arithmetic rather than a footnote. That is why your calls stick, and why a decision that has to hurt somebody sits undone for a week. Rational closure gets things settled, sometimes before the argument has finished.
Rational and Irrational are Jung's own words for his function pairs; measuring that opposition on its own fourth scale is Briggs and Myers' work from the 1940s. And nobody is a pure type — every scale here has a quieter opposite that did not win.
There is a version of this where you say the unpopular thing on the day it needs saying. Same four letters, better afternoon.
Introverted Thinking Type (ISTJ) — Sentinel (LSI)
Start with the caveat, because here it is not a caveat: no one is a pure type. All four scales had both poles pulling, and what follows names the side that led, which is a long way short of a whole person.
Yours: Introversion on energy, Sensing on perception, Thinking on decision, Rational on closure. Jung's own name for that is the Introverted Thinking Type, a phrase INTJ carries too — the four letters ISTJ, a code in the MBTI typology pattern, are the difference. CoreTypes calls this type Sentinel, three-letter code LSI.
Solitude is where you refuel and the detail in front of you is what you trust; between them you are the person whose work holds up when somebody checks it. The price is a day of being unreachable, and a change of direction having to survive your reasonable question about the current one.
Thinking makes your decisions defensible and, now and then, colder than the situation deserved. Closing a question keeps your life on time, and can shut a file that deserved one more look. Rational and Irrational are Jung's own words for his function pairs; scoring closure as a fourth dichotomy came from Katharine Briggs and Isabel Myers, decades afterwards.
Which of the four came out nearly even? That is the letter to watch.
Introverted Intuitive Type (INTP) — Seer (ILI)
Introversion on energy, Intuition on perception, Thinking on decision, Irrational on closure. In plain terms: you refuel away from people, you see where a thing is heading before it gets there, you decide by criteria, and you decline to call anything final.
That first pair gives you depth almost nobody else makes time for, and a habit of arriving at the conversation two days after it ended. The pattern you are sure of also runs ahead of anything that could confirm it.
The second pair makes you honest under pressure, willing to abandon your own argument, and capable of sounding like a verdict when somebody wanted a person. Leaving decisions open keeps you correctable; it also lets deadlines choose for you.
Jung's own phrase for this is the Introverted Intuitive Type, INFP's too, which is what the four letters INTP, a code in the MBTI typology pattern, are for. CoreTypes calls this type Seer, three-letter code ILI. Rational and Irrational are his own function words, though the fourth scored dichotomy is Briggs and Myers' addition.
No one is a pure type; each of your four had an opposite pulling on it. Find the closest margin and you have found the letter that changes first.
Extraverted Sensing Type (ESFP) — Duke (SEE)
Jung's own vocabulary calls this the Extraverted Sensing Type — the phrase ESTP gets too, which is why the four letters ESFP, a code in the MBTI typology pattern, come next. CoreTypes' own name for it is Duke, three-letter code SEE.
Extraversion here runs on people: you find out what you think by saying it aloud, and rarely go long enough alone to notice you are tired. Sensing is why nothing reaches you as an abstraction: it comes as the thing actually said and the face it was said with. Nobody misleads you about the present, and a warning that exists only as a pattern goes straight past.
Feeling decides by who is in the room, so people hand you things they would not hand a fairer judge; consistency across cases is where it slips. Keeping closure open, Irrational in Jung's own naming, leaves you free to change with the evening and a few things undecided.
Nobody is a pure type. Each scale had two poles pulling; one led. The closure scale wants a footnote: Jung supplied the words Rational and Irrational for his function pairs, but giving them a scale of their own, forced against the other three, is Briggs and Myers' addition.
Look for the scale that sat closest to the middle. That is the one to test.
Extraverted Thinking Type (ENTJ) — Executor (LIE)
You work things out with people around you, out loud, and what you look at is the shape the thing could take, not the state it is in. That combination makes you the one who moves a stalled project. It also means you need the room to think properly, and that you commit to a picture the details have not caught up with.
Extraversion, Intuition, Thinking, Rational. Jung's own name for it is the Extraverted Thinking Type, which ESTJ shares; the four letters ENTJ, a code in the MBTI typology pattern, tell the two apart. CoreTypes calls this type Executor, three-letter code LIE.
Thinking gives you calls you can defend line by line and a reputation for being colder than you feel. Rational closure means things actually finish, and that you can lock a decision while somebody was still finding the words to object. Rational and Irrational are Jung's own terms for his function pairs; scoring closure as an independent fourth axis is Briggs and Myers' addition from the 1940s, not his method.
Nobody is a pure type. This names which pole led on four scales, and stops there. It says nothing at all about whether the stalled project was worth moving, which is the question you were actually asked.
Introverted Feeling Type (ISFJ) — Custodian (ESI)
Introversion on energy and Sensing on perception: you come back to yourself in quiet, and you trust what can be checked — the actual date, the actual sentence. It makes you reliable in a way people notice only when you are not there, and a big change of direction has to prove itself twice before you move.
Feeling settles your decisions on the people in them: you remember what everybody needs, and saying no costs you something. Rational closure means the question gets answered and the thing gets done, sometimes at the price of a plan you had outgrown. Rational and Irrational are Jung's own words for his function pairs; scoring that opposition on a fourth scale of its own was added later, by Katharine Briggs and Isabel Myers.
Nobody is a pure type, and none of this is exclusive: every scale here had an opposite pole with real weight behind it, and the type names whichever is in the lead.
In Jung's own vocabulary this is the Introverted Feeling Type, INFJ's phrase too, so the four letters ISFJ, a code in the MBTI typology pattern, do the separating. CoreTypes calls this type Custodian, three-letter code ESI. The word people reach for about you is "dependable", and it is the least interesting true thing about you.
Introverted Feeling Type (INFJ) — Sage (EII)
One thing first, because it gets misattributed constantly. Rational and Irrational are Jung's own words for his two pairs of functions, but measuring that opposition as a separate, forced fourth dichotomy is an addition Katharine Briggs and Isabel Myers made in the 1940s, and his own book does none of it.
With that said: Introversion, Intuition, Feeling, Rational. Jung's own name for the combination is the Introverted Feeling Type, which ISFJ also carries — the four letters INFJ, a code in the MBTI typology pattern, are how the two are told apart. CoreTypes calls this type Sage, three-letter code EII.
The inward attitude and the intuitive read give you an unnerving sense of what a person has not said yet. The bill arrives twice: you disappear for days, and you can be certain about a pattern on evidence you would never accept from anybody else.
Feeling makes your decisions humane and makes an impersonal rule feel like a betrayal to apply. Rational closure gets you to an answer, and can close a question that deserved to stay open a week longer.
No one is a pure type. Each scale had both poles pulling, and this names the one in front. So: when did you last say out loud the thing you were already sure of?
Extraverted Thinking Type (ESTJ) — Overseer (LSE)
Things get organised around you, out of what is verifiably there: the schedule, the invoice, the count. That is an outward-facing attitude working with concrete perception, and it makes you the person a chaotic week goes to. It also means an empty evening feels like a fault, and an idea with no evidence yet gets less patience than it deserved.
Decisions run on criteria, which is Thinking, and they close, which is Rational. Nobody argues with your fairness; some people find it cold, and a settled matter can stay settled after the ground under it has moved.
Put in plain words, that is Extraversion, Sensing, Thinking and Rational. Jung's own phrase for the shape is the Extraverted Thinking Type, ENTJ's as well, so the four letters ESTJ, a code in the MBTI typology pattern, do the separating. CoreTypes calls this type Overseer, three-letter code LSE.
The closure scale carries a footnote worth having: the words Rational and Irrational are Jung's, but scoring them as an independent fourth dichotomy is Briggs and Myers' work from the 1940s.
And no one is a pure type. This names a lead, and a lead is a thin thing to build an identity on. The half of you that keeps no schedule is still in there, and it is where your weekends go.
Extraverted Intuitive Type (ENFP) — Harbinger (IEE)
Extraversion on energy, Intuition on perception — outward, and reading what could be rather than what is. Jung's own name for that pairing is the Extraverted Intuitive Type, shared with ENTP; the four letters ENFP, a code in the MBTI typology pattern, are what separate them. CoreTypes calls this type Harbinger, three-letter code IEE.
Those two are why people leave a conversation with you more interested in their own life than when they arrived, why an empty diary unsettles you, and why a possibility feels established well before anything has confirmed it.
The other two are Feeling on decision and Irrational on closure. You judge by the person in front of you, which makes you trusted and an even-handed rule hard to apply the same way twice. You keep questions open, which keeps you honest about new information and leaves a shelf of things never quite decided.
Rational and Irrational are Jung's own words for his function pairs; making that a scored fourth dichotomy was Katharine Briggs' and Isabel Myers' addition. And no one is a pure type — this is which pole led, and leading is the whole of what it means.
Somewhere on that shelf of never-quite-decided things is one you already know the answer to.
Introverted Sensing Type (ISTP) — Craftsman (SLI)
Jung's own vocabulary gives this result the name Introverted Sensing Type. ISFP gets the same phrase, so the four letters ISTP, a code in the MBTI typology pattern, carry the difference. CoreTypes calls this type Craftsman, three-letter code SLI.
One of those four letters needs its history said plainly. Rational and Irrational are Jung's own words for his pairs of functions, but scoring that opposition as an independent fourth dichotomy came from Katharine Briggs and Isabel Myers in the 1940s, not from Jung's own book.
The rest reads as Introversion, Sensing, Thinking, Irrational: you recover alone, you trust what you can put your hands on, you decide by what holds up, and you leave the door open. The first two make you the person who finds the actual fault while everybody else theorises, and the person nobody heard from all weekend, occasionally missing where the thing is heading.
Thinking keeps your judgement clean and your delivery blunter than intended. An open closure means changing course on new evidence and letting some choices expire unmade. And no one is a pure type: each scale had both poles pulling, and this names the one in front.
Look at which of your four sat nearest the middle. That is the letter that moves.
Your results are no accident
The classic 16-type personality test rooted in Jung's typology has been rebuilt from the ground up: a new CoreTypes methodology, and a far higher level of accuracy. These might be the most useful ten minutes you'll ever spend on yourself: you walk away with the key to your decisions, your relationships and your results — and it's yours for good.
Take the free testFrequently asked questions
Did Carl Jung actually create a personality test?
No. What he published in 1921 was an account of attitude-types and functions — the raw material behind the four scales you have just answered — and nothing resembling a questionnaire with a score attached. The extra dichotomy, the letter codes and the whole business of turning answers into a type arrived much later, and they came from Katharine Briggs and Isabel Myers. The vocabulary is his. The format is not.
Is the Jung typology test the same as the official MBTI?
No, and there is no version of this test that anybody could call the official one. What you have taken was written on its own, out of the same freely used Jungian terms that dozens of other tests draw on, and it carries no licence, endorsement or connection to any registered product with a name like it. The four letters look familiar because the letters are common property, not because two tests are one test.
What is the difference between the Jung typology test and the Myers-Briggs test?
Search treats the two names as interchangeable, but the history keeps them apart. Jung's part arrived in 1921: attitudes and functions, described but never scored. The branded, letter-coded instrument was assembled a good deal afterwards, and it parts company with him at one identifiable point. It gives the Rational and Irrational opposition a scale of its own and scores it separately, which Jung never did.
Is the Jung typology test scientifically accurate?
Jung's typology is a genuine and historically weighty way of talking about people, not something conjured out of nothing. What has never been established, for his version or for the letter-coded one, is that it measures anything precisely; the studies are not there. His own way of working was to interpret one person at a time; counting answers on a form was no part of it. Take a result from it as a prompt for thinking about yourself, not as a reading off a gauge.
Can you get a different type if you retake the test?
Yes, and with this kind of test it happens to plenty of people: retakes very often shift at least one letter. The one to watch is whichever scale finished nearest the halfway mark, because a near-level dichotomy is the least settled thing in the result, and it is where a change of mood or a couple of questions read differently will show up first. That is about how steady the measurement is, and not about how you compare with anybody else.
Methodology
The approach comes from Carl Jung's attitude-types and functions, and from the sixteen-way code system others assembled on that base afterwards. It is not Jung's own test, and not any trademarked product borrowing his name.
Four dichotomies are measured, each settled on its own: Energy, Perception, Decision and Closure — type theory in its most familiar form. Eight questions feed each, and the four winning poles combine into one of sixteen results. Where a dichotomy lands exactly level, the pole that claims less takes it — Introversion, Sensing, Thinking, Irrational — since a draw has not shown the stronger claim. The first three dichotomies are Jung's material, and so are the words Rational and Irrational — his own names for the two pairs of his functions. What is not his is the fourth scale: measuring that opposition on its own, forced against the other three, was added much later. Two of the four name your result the way Jung named types, attitude plus leading function, and each of those eight names covers two of the sixteen codes, which is what the code separates.
Jung never wrote or published this questionnaire, nor any test that scores answers. The extra dichotomy, the grid of sixteen and the letters themselves are Katharine Briggs' and Isabel Myers' work, from the 1940s on. He stated plainly that nobody is a pure type: a result here says which side of four scales is in front, never that one side is the whole of you. His own introversion and extraversion distinction is the part that travelled furthest.
Limits. This is a descriptive system with a thin evidence base. Neither Jung's original nor the letter-coded version grown from it measures anything with the precision a validated instrument needs, so the honest use of a result is as something to think about yourself with. Each dichotomy is a continuum sliced in two, so a percentage near the halfway mark marks the shakiest letter in your result — the one likeliest to land differently on a second run. A type portrait written broadly enough rings true to almost anybody. None of this is evidence about which job suits you, who to be with, anything clinical, or what you will do next week. Jung read people one at a time; counting answers on a form is a different instrument.
References
- Jung, C. G. (1921/1971). Psychological Types (H. G. Baynes, Trans., rev. R. F. C. Hull). Princeton University Press / Collected Works, Vol. 6.
- McCrae, R. R., & Costa, P. T., Jr. (1989). Reinterpreting the Myers-Briggs Type Indicator From the Perspective of the Five-Factor Model of Personality. Journal of Personality, 57(1), 17–40. doi:10.1111/j.1467-6494.1989.tb00759.x
- Carroll, R. T. Myers-Briggs Type Indicator (MBTI). The Skeptic's Dictionary.