What T and F actually describe
T and F are both ways of deciding. Once you have the facts, you still have to weigh them. Thinking weighs them against a principle that should apply to everyone. Feeling weighs them against what matters to the people in this situation.
Take a teacher whose best student hands in work a day late because of a family problem. The T teacher's first question is: “What is the rule, and is it fair to the others if I bend it?” The F teacher's first question is: “What does this student need, and what would a penalty mean to them right now?” Both care about fairness and about the student. They just start from different ends.
How to tell if you are T or F
| Situation | Leans T | Leans F |
|---|---|---|
| A friend shows you weak work | Points out what to fix, because that helps | Starts with what works, then eases into the fix |
| Two friends argue | Works out who is right | Works out how to keep both friendships |
| Choosing a job | Pay, growth, how well it fits the plan | The people, the purpose, how it fits who you are |
| Being criticised | “Is it correct?” | “Why did they say it like that?” |
| A rule seems unfair | Wants a better rule for everyone | Wants an exception for the person hurt by it |
Answer for your own private reactions. Many jobs train people to act more T (law, engineering, management) or more F (care work, teaching, sales). Your first, untrained reaction is the better clue.
What Jung meant by “feeling”
The confusion starts with the word. In Psychological Types (1921), Carl Jung put thinking and feeling in the same group: the rational functions. Both judge and come to conclusions. Thinking judges by logic: does this follow, is it true? Feeling judges by value: is this acceptable, is it worth it?
So in type theory, “feeling” does not mean being emotional. A calm person who quietly decides by their values is a feeling type. A person who gets loud and angry in a debate about facts is a thinking type. Emotion and the F letter are different things.
Three myths about T and F
“T people are cold.” Many T types are warm and loyal. They often show care through actions, like fixing the problem, rather than through words about it.
“F people can't be logical.” F types use logic all the time. They simply refuse to let a logical answer win if it breaks something they care about.
“F means nice, T means honest.” An F person can be very blunt when a value is at stake. A T person can be very gentle when they think gentleness gets the better result.
Inward and outward versions
Type theory splits each letter into an outward and an inward function. This explains why two T types, or two F types, can argue in very different styles:
- Extraverted Thinking (Te): organises the outside world to get results. Measurable, efficient, decisive. Leads in ESTJ and ENTJ.
- Introverted Thinking (Ti): builds a precise inner model of how things work. Leads in ISTP and INTP.
- Extraverted Feeling (Fe): reads and tends the mood of the group. Leads in ESFJ and ENFJ.
- Introverted Feeling (Fi): checks everything against a private set of values. Leads in ISFP and INFP.
An ENTJ and an INTP are both T, but one asks “does it work?” and the other asks “is it exactly right?”. An ENFJ and an INFP are both F, but one asks “how is everyone doing?” and the other asks “is this true to me?”.
T and F in relationships
The most common T/F clash is about what a conversation is for. One partner describes a problem. The T partner hears a request for a solution and offers one. The F partner wanted to be understood first and hears the solution as “you're overreacting”. Asking “do you want ideas, or do you want me to listen?” solves a surprising amount of this. For full type pairings, see the 16-type compatibility chart.
How T/F lines up with the Big Five
When McCrae and Costa compared the type letters with the Big Five in 1989 (468 adults), T/F lined up with agreeableness: people who score F tend to score higher on warmth, trust and cooperation. The Big Five test scores agreeableness on a scale. If decisions involving people are your main interest, the emotional intelligence test looks at a related but separate skill: noticing and managing emotions, which both T and F types can be good or poor at.
The 8 T types and the 8 F types
Thinking types (T third)
Our free 16-type test asks 15 questions on the T/F scale and shows your result as a percentage, not just a letter.
Common questions
How do you know if you are a thinker or a feeler?
Think of a hard decision you made recently, like giving bad news or choosing between two people for a job. What did you check first? If you first asked whether it was fair, consistent and logical, you lean Thinking (T). If you first asked who would be affected and what mattered most to the people involved, you lean Feeling (F). Both types care about both things. The letter shows which one you reach for first and trust when they clash.
What did Carl Jung say about thinking and feeling?
In Psychological Types (1921), Jung called both thinking and feeling rational functions, because both evaluate and come to conclusions. Thinking judges by logical connection: true or false, consistent or not. Feeling judges by value: acceptable or not, important or not. For Jung, feeling was a way of reasoning about worth. It was not the same as having emotions.
Do feeling types have more emotions?
No. Thinking types feel emotions as strongly as anyone. The difference is what each type uses to make decisions. A T person may feel upset and still decide by the rules. An F person may feel calm and still decide by what the decision means for people.
Are thinking types smarter?
No. The letter says nothing about intelligence. Feeling is a kind of reasoning too: it weighs values, relationships and consequences for people, which is often the harder problem. You will find F types in law, medicine and engineering, and T types in the arts and care work.
Which is more common, thinking or feeling?
Feeling is a little more common. In the largest US sample used to build the questionnaire, 59.8% of adults came out F and 40.2% T.
Sources: Jung, C. G. (1921). Psychological Types. Myers, I. B., McCaulley, M. H., Quenk, N. L., & Hammer, A. L. (1998). MBTI Manual (3rd ed.), US national sample. McCrae, R. R., & Costa, P. T. (1989). Journal of Personality, 57(1), 17–40.