Jungian Cognitive Functions Test
Discover how your mind works through Jung's 8 cognitive functions (Fi, Fe, Ti, Te, Si, Se, Ni, Ne), see your function stack, and find which of the 16 personality types you resemble most.
How This Test Works
The test scores all eight functions before it names a type, which is the main difference between this and a standard 16-type questionnaire.The walkthrough below describes the full 96-question version; you can switch to the 48-question quick version at the top of the page at any time.
Part 1 · Agreement statements
You rate how much each statement sounds like you on a five-point scale. These items are written to measure each of the eight functions separately, so what comes out is a profile rather than a single label. The full version has 80 statements (10 per function); the quick version has 40 (5 per function).
Part 2 · Preference questions
Short forced-choice questions separate functions you scored similarly — for example Ni against Ne. You may skip any of them, though the ranking then leans more heavily on Part 1. The full version has 16; the quick version keeps 8, one for each function pair.
Free, no account, nothing uploaded
The full version takes most people around 15 minutes and the quick version about 4 to 6. It is free, needs no registration, and your answers are scored in your browser instead of being uploaded.
What you get at the end
Eight function scores, a likely function stack in dominant-to-inferior order, the four-letter type your answers resemble most, and a match figure so you can see how clear the result actually is.
What this test is not
It does not measure ability, intelligence, or mental health, and it is not a clinical instrument. It is structured vocabulary for self-observation, and it should not be used to label other people.
Thinking · Intuition · Sensation · Feeling
Thinking
Te · Extraverted Thinking
Oriented toward efficiency, structure and objective goals — organizing resources and executing measurable plans.
Ti · Introverted Thinking
Reasoning from internal logic and consistency — analyzing concepts from first principles for precise, self-consistent explanations.
Jung's function circle: attitude and function
E = extraverted attitude · I = introverted attitude
Te · Extraverted Thinking
Oriented toward efficiency, structure and objective goals — organizing resources and executing measurable plans.
Conscious Expression: As a dominant or auxiliary function, Te makes you an effective executor: you break big goals into actionable steps, decide decisively, delegate, and measure progress by objective standards.
The Eight Cognitive Functions
Each function is a different way of taking in information or reaching a decision. Open any function to see how it works when conscious, how it flips under stress, and which of the 16 types rely on it.
Fi · Introverted Feeling
Judging by inner values and authenticity — focusing on what feels personally right and staying true to it.
Read the Fi guideFe · Extraverted Feeling
Oriented toward interpersonal harmony and group emotion — sensing others' needs and maintaining social bonds.
Read the Fe guideTi · Introverted Thinking
Reasoning from internal logic and consistency — analyzing concepts from first principles for precise, self-consistent explanations.
Read the Ti guideTe · Extraverted Thinking
Oriented toward efficiency, structure and objective goals — organizing resources and executing measurable plans.
Read the Te guideSi · Introverted Sensing
Drawing on past experience and familiarity — noticing details, consistency and stable routines.
Read the Si guideSe · Extraverted Sensing
Focused on the present environment and concrete information — immediate experience, quick reactions and strong action.
Read the Se guideNi · Introverted Intuition
Attending to patterns, trends and symbolic meaning beneath the surface — forming deep insights and an inner vision of the future.
Read the Ni guideNe · Extraverted Intuition
Driven by external possibilities and associations — divergent thinking that connects ideas across domains.
Read the Ne guideWhat Are Cognitive Functions?
Cognitive functions describe two things separately: how you take information in, and how you decide what to do with it. Sensing and Intuition cover perception; Thinking and Feeling cover judgement. Each of those four comes in an introverted and an extraverted version, which is where the number eight comes from.
Everyone uses all eight. What differs is the order: two or three feel effortless and the rest cost energy, especially under pressure. A function profile is a description of that order, not a measure of ability or a clinical result.
This test scores all eight functions, then derives the function stack and the four-letter type that your answers resemble most. It is a self-reflection tool built on Jung's theory of psychological types and the function-stack model popularised by Grant and Brownsword.
What Is a Function Stack?
Your function stack is the eight functions ordered by how readily you can use them. The first four are the ones you reach for on purpose.
Dominant
The function you trust most and use best. It runs in the background almost all the time and shapes what feels obvious to you.
Auxiliary
The supporting function. It balances the dominant one — if the dominant function takes information in, the auxiliary one helps you decide, and vice versa.
Tertiary
Used more lightly and playfully, often relatively immature. It tends to develop later in life and can feel like a hobby rather than a skill.
Inferior
The least developed of the four, and the most visible under stress. It is also one of the most reliable doorways for growth.
Disclaimer: This test is for educational and self-reflection purposes only. It is not a diagnostic tool and does not measure mental health or abilities. If you are experiencing mental health concerns, please consult a qualified healthcare professional.
How to Read Your Function Scores
Your scores are relative to your own answers, not to a population average. A high score means you reach for that function readily; a low score means it costs you more effort. Neither is better.
High scores: habits, not talents
A high Ti or Fe score describes what you do automatically and where your attention lands when you are not deliberately managing it. It is a description of preference, not a measure of skill — plenty of people are competent with a function they do not enjoy using.
Low scores: not a deficit
A low score usually means the function is simply not your default route, not that you cannot use it. People commonly report that their lowest-scoring function becomes noticeably easier to access in their thirties and beyond.
Mid-range scores: expect noise
Most profiles have two or three mid-range functions, and those are the scores most likely to move between retakes. Treat 55% and 60% as the same result rather than as a ranking, and compare results taken months apart rather than days apart.
Close type matches: read both
If your top two types sit within a few points of each other, both profiles are worth reading. Understanding the function stack the two types share is usually more useful than deciding which letter wins.
Cognitive Functions vs the Four-Letter Type
Both descriptions come from the same theory. They simply answer different questions.
The four letters answer “which group?”
A type code such as INTJ sorts you into one of sixteen categories. It is fast, memorable and widely understood, but it compresses a lot of variation into four binary choices.
The functions answer “how do I process?”
The eight functions describe the machinery: which functions you reach for first, which support them, and which show up mainly under stress. Two people with the same four letters can have very different function strengths, and that is what the function scores expose.
They agree more than they disagree
The four-letter type is derived from the same function stack shown on this page. If your function scores point at one type and your own sense of yourself points at another, trust the scores for vocabulary and yourself for the conclusion.
Prefer the quick version?
The free MBTI test gives you a four-letter type in about 15 minutes, with a full profile page for every type.
Take the MBTI Test16 Types × 8 Functions
Click a function abbreviation to read its guide; click a type to open its MBTI profile.
Common MBTI Misconceptions
As MBTI became a social shorthand, stereotypes and misunderstandings followed. Here we clear up the most common myths so you can use MBTI as a tool for self-understanding — not a label.
Are E types always outgoing and chatty, and I types always introverted and shy?
E/I describe the source of your mental energy, not your social skills. E types orient attention outward and resonate with external standards; I types live in their inner world and follow their own values. Many salespeople and service workers appear outgoing to others yet test as I.
Are T types emotionless robots, and F types illogical?
MBTI analyzes mental functions, not behavior. T/F is about what you reference when making decisions: T applies one consistent standard to everyone, focusing on the matter; F weighs how a decision affects people, focusing on individuals. An F-type boss may pardon a late employee whose child is sick — there is a coherent inner logic behind it.
Are J types more reliable, while P types are careless and never get things done?
J and P differ in what freedom means to them: J wants inner freedom and controls the outer situation with schedules and plans; P wants outer freedom and adapts on the fly with just a general goal in mind. J may look more dependable on a plan, but in sudden or fast-changing situations, P adapts better than J.
Is MBTI accurate? Isn't it a kind of fatalism?
MBTI is an assessment tool, not a test — there is no score, and no type is better or worse than another. It describes your thinking and behavior patterns clearly, but it cannot measure your abilities. The key point: knowing your type does not mean you must act that way — you always have room to choose and grow.
Can my type change? Why did I get a different result the second time?
Types can change. Environment and socialization shape a person, and the eight sub-functions can be strengthened or shifted through practice. If two results taken close together differ, check your state while answering — assess yourself honestly from your most comfortable state, not the role you imagine or feel expected to play.
Cognitive Functions Test FAQ
What are cognitive functions?
Cognitive functions are eight modes of mental activity described in Jungian typology: Introverted and Extraverted Sensing (Si/Se), Introverted and Extraverted Intuition (Ni/Ne), Introverted and Extraverted Thinking (Ti/Te), and Introverted and Extraverted Feeling (Fi/Fe). Four of them take information in and four of them evaluate it, and each pair differs by whether it is oriented toward your inner world or the outer one.
How many cognitive functions are there?
Eight: Se, Si, Ne, Ni, Te, Ti, Fe and Fi. The classical Jungian model describes four functions (Sensing, Intuition, Thinking, Feeling) in two attitudes (extraverted and introverted). Later authors such as John Beebe extended the model to eight positions within a single type, which is why the full stack on a type page shows more than four entries.
What is the difference between this test and the MBTI test?
The MBTI test sorts you into one of 16 four-letter types. This test scores each of the eight functions separately first, and only then looks at which stack and type your scores resemble. If you want a quick type label, take the MBTI test. If you want to see where your profile is uneven — for example strong intuition but weak sensing — this test gives you more to work with.
How long does the cognitive functions test take?
About 15 minutes. Part 1 is 80 agreement statements rated on a scale, and Part 2 is 16 forced-choice questions that separate functions you scored similarly. You can skip preference questions, though the ranking then leans more heavily on Part 1.
Is this cognitive functions test free?
Yes. The test is free, requires no account, and your answers are scored in your browser. You get the same eight function scores, stack and type match whether or not you share an email address.
Can your function stack change?
Type theory treats the order as fairly stable, but the strength of each function can shift with practice, environment and life stage. People often report that their tertiary and inferior functions become easier to use in their thirties and beyond. Retaking the test a year apart is more informative than retaking it a week apart.
Is the cognitive functions test a scientific instrument?
No. Like the MBTI, this framework is a self-reflection tool rather than a psychometrically validated clinical instrument. It is useful for vocabulary and self-observation, and it should not be used to diagnose anyone or to predict job performance.
Show Details
About This Test
This test is based on Jung's theory of psychological types (1921) and the function-stack model popularized by Grant and Brownsword. It measures 8 cognitive functions: Introverted/Extraverted Feeling (Fi/Fe), Introverted/Extraverted Thinking (Ti/Te), Introverted/Extraverted Sensing (Si/Se), and Introverted/Extraverted Intuition (Ni/Ne). Like the MBTI, this framework is a self-reflection tool rather than a standardized personality measure.
How to Play
Two stages: 80 agreement questions (1-5 scale) measure the strength of each function, then 16 preference questions refine ties. A function stack and type match are derived from your 8 function scores.
Part 1 · Agreement · Part 2 · Preferences
Two stages: 80 agreement questions (1-5 scale) measure the strength of each function, then 16 preference questions refine ties. A function stack and type match are derived from your 8 function scores.
Disclaimer
This test is for educational and self-reflection purposes only. It is not a diagnostic tool and does not measure mental health or abilities. If you are experiencing mental health concerns, please consult a qualified healthcare professional.
References
- Jung, C. G. (1921). Psychological Types. Grant, W. H. (1986). From Image to Likeness. Brownsword, A. (1987). It Takes All Types!.
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