A concise field guide
What are cognitive functions?
In Jungian type theory, cognitive functions are eight proposed patterns for taking in information and making judgments. They are commonly used to describe the 16 personality types associated with MBTI typology. Everyone can use all eight; a function stack describes an order of preference, not a set of abilities.
Ne Extraverted intuition
Explores connections, alternatives, and emerging possibilities in the outer world.
Ni Introverted intuition
Synthesizes information into an underlying pattern, implication, or likely direction.
Se Extraverted sensing
Attends to immediate, concrete information and responds directly to what is happening.
Si Introverted sensing
Compares present experience with a detailed internal record of what is familiar.
Te Extraverted thinking
Organizes people, resources, and procedures around observable outcomes.
Ti Introverted thinking
Refines definitions and models for internal precision and logical consistency.
Fe Extraverted feeling
Tracks shared values, social context, and the emotional field between people.
Fi Introverted feeling
Evaluates choices against personal values and an inward sense of congruence.
Preference, not proficiency
How function stacks work
A conventional four-function stack alternates between perceiving and judging, and between inward and outward orientation. The positions describe a theory of relative preference and development.
Dominant
The most habitual lens: often easy to use and difficult to notice because it feels ordinary.
Auxiliary
A balancing partner that supports the dominant with a different kind of process and orientation.
Tertiary
A familiar but less consistent process that may become more nuanced with experience.
Inferior
The least preferred of the four, often experienced as effortful, aspirational, or pronounced under stress.
Stack first, letters second
Cognitive functions vs. MBTI letters
Many MBTI tests ask directly whether you are introverted, intuitive, thinking, or judging. Rabbit instead works as a cognitive function test: it compares function preferences, builds a likely stack, and derives the four-letter code from that arrangement. The aim is to distinguish similar-looking personality types whose proposed mental priorities differ.
The result is best treated as a hypothesis for reflection. Cognitive-function models and MBTI-style categories are not clinical diagnoses, and researchers debate their reliability and validity.
Methodology
Two approaches at a time
- Compare. 64 pairs explore how you notice information and make judgments, across everyday contexts. Each function appears equally often, against all seven others.
- Weigh. Use the slider to express a slight, moderate, or strong preference. Neutral adds no preference points; skip situations you cannot meaningfully answer.
- Match. Scores account for the number of answered comparisons. All 16 conventional stacks remain in consideration, with more weight on dominant and auxiliary processes.
- Reflect. Compare your leading stack and closest alternative. A narrow gap or limited evidence calls for more reflection, not a firm label.
Allow about 10–15 minutes. This original question bank and its scoring weights have not been validated against a representative sample. The model does not require your function scores to descend in stack order. Answer mappings are hidden during the quiz.
About
A restrained type experiment
Rabbit Personality Test is a small, independent Jungian personality test designed to make MBTI cognitive-function and function-stack reasoning visible without pretending to offer clinical precision or official affiliation. Its language is cautious by design.
Privacy
Local by default
Answers and progress stay in your browser. A shared result link contains only the type, confidence label, alternative type, and anonymous function totals needed to reconstruct the chart. No signup or analytics service is currently connected.
Disclaimer
For reflection, not assessment
This test is for self-reflection and entertainment. It is not a medical, psychological, employment, or educational assessment and should not be used to make consequential decisions about anyone.
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