The 16 personality types
The 16 personality types are four-letter codes built from four pairs of preferences: Extraversion or Introversion, Sensing or Intuition, Thinking or Feeling, and Judging or Perceiving. Each code, such as INFJ or ESTP, describes where your attention goes, how you take in information, how you decide, and how you like to organize your life. Pick a type below to read its full profile.
Intuitive thinkers (NT)
Pattern-seeking and analytical: drawn to systems, ideas and competence.
INTJNi-Te · Ni › Te › Fi › SeINTPTi-Ne · Ti › Ne › Si › FeENTJTe-Ni · Te › Ni › Se › FiENTPNe-Ti · Ne › Ti › Fe › SiIntuitive feelers (NF)
Meaning-seeking and people-focused: drawn to values, growth and possibility.
INFJNi-Fe · Ni › Fe › Ti › SeINFPFi-Ne · Fi › Ne › Si › TeENFJFe-Ni · Fe › Ni › Se › TiENFPNe-Fi · Ne › Fi › Te › SiSensing judgers (SJ)
Steady and dependable: drawn to structure, duty and proven methods.
ISTJSi-Te · Si › Te › Fi › NeISFJSi-Fe · Si › Fe › Ti › NeESTJTe-Si · Te › Si › Ne › FiESFJFe-Si · Fe › Si › Ne › TiSensing perceivers (SP)
Hands-on and adaptable: drawn to action, craft and the present moment.
ISTPTi-Se · Ti › Se › Ni › FeISFPFi-Se · Fi › Se › Ni › TeESTPSe-Ti · Se › Ti › Fe › NiESFPSe-Fi · Se › Fi › Te › NiWhere the 16 types come from
The idea starts with Carl Jung's book Psychological Types, published in 1921. Jung described two attitudes, introversion and extraversion, and four functions: sensing, intuition, thinking and feeling. Later writers added a fourth pair, judging and perceiving, and arranged the combinations into sixteen four-letter codes. The best-known questionnaire built on that framework is the Myers-Briggs Type Indicator® (MBTI® and Myers-Briggs are trademarks of The Myers-Briggs Company); Traitprint is not affiliated with it, and the pages here are our own independent descriptions.
Every type page on Traitprint covers the four letters, the type's cognitive function stack, strengths and blind spots, relationships, work, common misconceptions, loose links to the Enneagram and the Big Five, and practical growth ideas.
Extraversion (E) vs Introversion (I): where your energy goes
The first letter is about orientation, not shyness. People with an Extraversion preference tend to think out loud, draw energy from activity and company, and look outward first. People with an Introversion preference tend to process internally, recharge with quiet time, and want to understand something before they act on it.
Plenty of introverts are confident speakers and plenty of extraverts enjoy solitude. The letter only describes which direction feels like home when nothing pushes you either way.
Sensing (S) vs Intuition (N): how you take in information
Sensing types trust what is concrete and observable: facts, details, past experience and what is happening right now. Intuitive types are drawn to patterns, meanings and possibilities, and they often skip ahead to what something could become. Intuition takes the letter N because I is already used for Introversion.
Neither is smarter. A Sensing preference often shows up as precision and realism; an Intuition preference as imagination and long-range thinking. Most people use both every day and simply reach for one first.
Thinking (T) vs Feeling (F): how you make decisions
Thinking types tend to decide by stepping back and asking what is logical, consistent and fair by an impersonal standard. Feeling types tend to decide by stepping in and asking what matters to the people involved and which choice fits their values.
Thinking does not mean cold, and Feeling does not mean emotional or irrational. Both are forms of judgment with their own reasoning. The letter shows which yardstick you trust when the two pull in different directions.
Judging (J) vs Perceiving (P): how you handle structure
Judging types like to settle things: plans, lists, decisions made early so they can move on. Perceiving types like to keep options open, gather more information, and adapt as they go. Judging here has nothing to do with being judgmental, and Perceiving has nothing to do with being perceptive.
In function-stack theory, the last letter also tells you which function a type shows to the outside world. A J type extraverts its decision-making function (thinking or feeling), while a P type extraverts its perceiving function (sensing or intuition).
How to read a four-letter code and its function stack
Read the code letter by letter, then look at its function stack: the order of the four cognitive functions a type is thought to rely on, from the dominant one that leads to the inferior one that shows up under stress. INTJ, for example, leads with introverted intuition and supports it with extraverted thinking, while INTP leads with introverted thinking and supports it with extraverted intuition. One letter changes the whole stack, which is why two codes that look almost identical can feel quite different in practice.
The four groups below (intuitive thinkers, intuitive feelers, sensing judgers and sensing perceivers) are a common way to see family resemblances between types. Treat any type as a starting point for self-reflection rather than a fixed label. Research psychologists generally prefer trait models such as the Big Five, which measure each dimension on a scale instead of sorting people into boxes.
Want to go one level deeper? Each of the eight cognitive functions has its own page: Ni · Ne · Si · Se · Ti · Te · Fi · Fe.
FAQ
What are the 16 personality types?
They are the sixteen combinations of four preference pairs: Extraversion or Introversion, Sensing or Intuition, Thinking or Feeling, and Judging or Perceiving. The codes are INTJ, INTP, ENTJ, ENTP, INFJ, INFP, ENFJ, ENFP, ISTJ, ISFJ, ESTJ, ESFJ, ISTP, ISFP, ESTP and ESFP.
Which personality type is the rarest?
You will often read that one type, frequently INFJ, is the rarest. There is no reliable worldwide data to settle it. Published estimates come from different questionnaires, samples and countries, and they disagree. It is fairer to say that some types appear less often in particular samples than to rank them.
How do I find out my four-letter type?
Read the four dimension descriptions on this page and the type profiles that seem close, then ask which fits how you behave when nobody is watching. Our free cognitive functions test scores all eight Jungian functions and suggests the four-letter type whose function stack your results most resemble.
Is this the official Myers-Briggs test?
No. Traitprint is an independent site and is not affiliated with The Myers-Briggs Company. Our type pages and cognitive functions test are original material written for self-reflection, based on Jung's public ideas and the widely discussed function-stack model.
Can your personality type change?
Many people get a different code when they retake a type questionnaire, especially when they sit near the middle of a dimension. Your core habits tend to be fairly stable in adulthood, but stress, age and context can shift how you answer. Treat a type as a description of current preferences, not a permanent identity.
Are the 16 types scientific?
Four-letter typology is popular and useful for conversation, but it sorts continuous traits into either-or categories, and academic psychologists mostly use trait models such as the Big Five instead. Use the 16 types as a vocabulary for differences, and use a research-based test when you want a measurement.
For self-reflection and entertainment only — not a clinical or diagnostic assessment. Myers-Briggs Type Indicator® and MBTI® are trademarks of The Myers-Briggs Company; Traitprint is not affiliated.