16 Personality TypesEncyclopedia
Explore a four-letter convention built from four paired preference dimensions. These pages describe response patterns, not fixed identities, abilities, diagnoses, or the official MBTI instrument.
Understanding the MBTI Framework
The Myers-Briggs Type Indicator (MBTI) is based on Carl Jung's theory of psychological types. It identifies 16 distinct personality types based on four key dimensions:
- E/I:Extraversion vs. Introversion - Where you focus your attention
- S/N:Sensing vs. Intuition - How you take in information
- T/F:Thinking vs. Feeling - How you make decisions
- J/P:Judging vs. Perceiving - How you approach the outside world
Research Foundation
The MBTI assessment was developed by Katharine Cook Briggs and her daughter Isabel Briggs Myers during World War II, based on Carl Jung's 1921 book "Psychological Types."
Learn more from Myers & Briggs FoundationGroups by middle-letter pair
For navigation, the 16 combinations are grouped by their middle two letters. The group descriptions do not establish shared ability, character, or motivation.
NT combinations
Four patterns that combine intuition-side and thinking-side responses.
INTJ
INTJ preference pattern
A four-letter response pattern combining introversion-side responses, intuition-side responses, thinking-side responses, judging-side responses.
INTP
INTP preference pattern
A four-letter response pattern combining introversion-side responses, intuition-side responses, thinking-side responses, perceiving-side responses.
ENTJ
ENTJ preference pattern
A four-letter response pattern combining extraversion-side responses, intuition-side responses, thinking-side responses, judging-side responses.
ENTP
ENTP preference pattern
A four-letter response pattern combining extraversion-side responses, intuition-side responses, thinking-side responses, perceiving-side responses.
NF combinations
Four patterns that combine intuition-side and feeling-side responses.
INFJ
INFJ preference pattern
A four-letter response pattern combining introversion-side responses, intuition-side responses, feeling-side responses, judging-side responses.
INFP
INFP preference pattern
A four-letter response pattern combining introversion-side responses, intuition-side responses, feeling-side responses, perceiving-side responses.
ENFJ
ENFJ preference pattern
A four-letter response pattern combining extraversion-side responses, intuition-side responses, feeling-side responses, judging-side responses.
ENFP
ENFP preference pattern
A four-letter response pattern combining extraversion-side responses, intuition-side responses, feeling-side responses, perceiving-side responses.
SJ combinations
Four patterns that combine sensing-side and judging-side responses.
ISTJ
ISTJ preference pattern
A four-letter response pattern combining introversion-side responses, sensing-side responses, thinking-side responses, judging-side responses.
ISFJ
ISFJ preference pattern
A four-letter response pattern combining introversion-side responses, sensing-side responses, feeling-side responses, judging-side responses.
ESTJ
ESTJ preference pattern
A four-letter response pattern combining extraversion-side responses, sensing-side responses, thinking-side responses, judging-side responses.
ESFJ
ESFJ preference pattern
A four-letter response pattern combining extraversion-side responses, sensing-side responses, feeling-side responses, judging-side responses.
SP combinations
Four patterns that combine sensing-side and perceiving-side responses.
ISTP
ISTP preference pattern
A four-letter response pattern combining introversion-side responses, sensing-side responses, thinking-side responses, perceiving-side responses.
ISFP
ISFP preference pattern
A four-letter response pattern combining introversion-side responses, sensing-side responses, feeling-side responses, perceiving-side responses.
ESTP
ESTP preference pattern
A four-letter response pattern combining extraversion-side responses, sensing-side responses, thinking-side responses, perceiving-side responses.
ESFP
ESFP preference pattern
A four-letter response pattern combining extraversion-side responses, sensing-side responses, feeling-side responses, perceiving-side responses.
Deepen Your Understanding
Explore additional resources to enhance your knowledge of personality psychology.
Development Guides
Use a result to choose a small reflection or skill-building experiment.
Explore guides →Career Insights
Compare work conditions, skills, values, constraints, and real opportunities.
View careers →Relationship Dynamics
Use differences as prompts for clearer communication without predicting compatibility.
Learn more →Ready to compare your four preference pairs?
Take the site's four-letter self-reflection questionnaire. It is not the official MBTI instrument and should not be used for high-stakes decisions.
Take Four-Letter Reflection