The 16 Personality Types: Can 4 letters really tell us who we are?

During quarantine, when almost everyone seemed to be taking personality tests, I found myself taking one too. I had always been interested in Zodiac signs, but I never felt like they were accurate enough. I wanted something that felt more logical, something that could explain scientifically why I behaved the way I did. That was when I became very interested in MBTI.

MBTI stands for “Myers-Briggs Type Indicator”. It is a personality framework developed from ideas originally proposed by Swiss psychiatrist Carl Jung, particularly his work on psychological types.

The framework was developed by Catherine cook Briggs and her daughter Isabelle Briggs Myers, beginning in the mid-20th century. They were interested in Jung's idea that people have different preferences in how they perceive information and make decisions.

The MBTI eventually organized these preferences into four pairs of opposing preferences:

I/E: Introversion vs. Extraversion

this is about where someone tends to direct and receive energy, not simply whether they're “shy” or “social”.

S/N: Sensing vs. Intuition

this concerns how someone tends to take in information.

Sensing: Tends to focus more on concrete information, details and what is directly observable

Intuition: tends to focus more on patterns, possibilities, meanings and connections

(the letter is N rather than I for intuition because I is already used for introversion)

T/F: Thinking vs. Feeling

this concerns preferences and decision making.

Thinking: emphasizes logic, consistency and objective criteria

Feeling: emphasizes values, people and the impact of decisions

(this doesn't mean thinking people have no feelings or feeling people aren't logical)

J/P: Iudging vs. Perceiving

this concerns how people tend to approach the outside world

Judging: generally prefers structure, planning and having things settled

Perceiving: generally prefers flexibility, openness and keeping possibilities available

put those four preferences together and you get 16 combinations.

For example:

INFJ= introverted+ intuitive+ feeling+ judging

My Experience as an INFJ

For me, MBTI became much more interesting when I discovered that I consistently received the same personality type. Around 90 percent of the time, my result has been INFJ, and I strongly relate to many of its characteristics. One of the descriptions that stood out to me the most was the INFJ tendency to avoid conflict. I have always considered confrontation something I would use as a last option. I used to wonder whether avoiding conflict meant that I was afraid to stand up for myself, but understanding my personality helped me see it differently. I realized that I am not necessarily afraid of conflict; I simply value peace and dislike unnecessarily hurting or offending people. Sometimes choosing peace is not weakness. It can simply mean that someone prefers to solve problems without immediately becoming confrontational.

Interestingly, although I usually get INFJ, I have received other results. I once got INTJ during an extremely stressful period in my life. At that time, I had almost completely shut off my emotions and was making decisions based on whatever seemed most logical. Looking back, that result actually helped me understand what I was going through. Another time, I received ENFJ. This happened when I had become much more socially active because I was playing volleyball, seeing friends almost every day, and constantly interacting with people. I remember feeling incredibly confident in my social abilities, almost as if I could conquer the world. These experiences made me realize that personality is not always as simple or fixed as four letters might make it seem.

Why I Like Analyzing People

One of the most entertaining things about MBTI for me is analyzing people. Not in a strange or judgmental way, but because understanding someone’s personality can make it easier to understand how they communicate and behave. I also enjoy comparing people to their personality descriptions and seeing whether the patterns actually match.

Sometimes, people who are extremely different from each other can be fascinating to observe. I have friends whose way of organizing their lives is completely different from mine. For example, I have a friend who tends to leave things until later and does not always get things done on time. Understanding her personality makes it easier for me not to immediately interpret that behavior negatively. Instead, I can recognize that she may simply approach tasks differently from me. That does not mean every behavior should be excused, but understanding someone’s tendencies can help you communicate with them more effectively and, if they want to change something, figure out what approach might actually work for them.

I can see this difference even within my own family. My mother is much more extroverted and more comfortable with spontaneity than I am. She can walk into a place and start talking to almost anyone, while I am much more reserved. She also does not mind clutter or an unorganized environment as much as I do. Seeing these differences reminds me that two people can grow up in the same family and still experience the world in completely different ways.

Can Personality Change?

This leads to another interesting question: are we born with our personalities, or do our experiences shape them?

Personally, I believe our environment plays a huge role. Family, friendships, school, culture, difficult experiences, and major changes in our lives can all influence the way we behave and see the world. I have seen people around me change certain parts of their personalities over time. However, I do not think that someone can completely become an entirely different person. Even when people change, I believe that some fundamental parts of them remain.

My own different MBTI results are an example of this. During stressful periods, I may behave more logically and emotionally distant than usual, while during socially active periods, I can become much more outgoing. However, I still recognize myself underneath those changes. This makes me think that personality may be flexible without being completely replaceable.

MBTI Isn’t the Whole Story

At the same time, I do not believe that MBTI can completely describe a person. Four letters cannot possibly explain someone’s entire personality, history, emotions, values, fears, relationships, and experiences.

This is where other personality frameworks can become interesting. One example is the Enneagram, which is another personality system that divides people into nine main types. Unlike MBTI, which focuses mainly on preferences in how people process information and make decisions, the Enneagram focuses more on a person’s underlying motivations, fears, desires, and behavioral patterns.

Because of this, two people can have the exact same MBTI type while still being very different people. They might process information in similar ways but have completely different motivations and life experiences. Personality is much more complicated than a four-letter combination.

I think of MBTI as a lens rather than a complete picture. A lens can help you see something more clearly, but it cannot show you everything.

Is MBTI Actually Scientific?

This also brings up an important criticism of MBTI. Although it has become extremely popular, psychologists and researchers have questioned how reliably the test measures personality and whether dividing people into fixed categories is the best way to understand human behavior. Personality psychology has other models that are more widely used in scientific research.

Personally, I am somewhere in the middle. I have found MBTI surprisingly accurate when it comes to describing many aspects of my personality, and taking the test repeatedly has usually produced the same result. However, I would not use it to make an extremely serious decision about myself or another person. I think it is most useful when treated as a tool for self-reflection rather than an absolute scientific definition of who someone is.

I also do not think people should use their personality type as an excuse for harmful behavior. Saying, “That’s just my personality,” does not automatically make bad behavior acceptable. Your personality may explain why you tend to behave a certain way, but it does not remove your responsibility for how you treat other people.

Why Do We Love Personality Types?

So why has MBTI become so popular?

I think part of the answer is that people naturally want to understand themselves. There is something satisfying about reading a description and suddenly thinking, That’s exactly what I do. Personality types give people a language to describe things they may have felt but never knew how to explain.

They also create a sense of connection. People can compare their types with their friends, partners, family members, celebrities, and even fictional characters. Assigning MBTI types to characters from movies, shows, anime, and books has become especially popular because people love seeing parts of themselves in characters they admire.

More importantly, humans have always been curious about their own minds. We constantly ask ourselves questions: Why do I react this way? Why do I get along with some people but not others? Why do I make certain decisions? Why am I different from the people around me?

Perhaps personality tests are popular because they give us a starting point for answering those questions.

Are We Really Only 16 Types of People?

I do not think there are only 16 types of people in the world. There are billions of people, and every one of them has a different combination of experiences, relationships, beliefs, memories, and emotions. It would be impossible for four letters to capture all of that.

But maybe that is not what MBTI is supposed to do.

Maybe the purpose of MBTI is not to put people into boxes, but to give us a starting point for understanding ourselves and each other. My own experience with MBTI has taught me things about myself that I might not have noticed otherwise. It helped me understand why I avoid conflict, why I communicate in certain ways, and why I can sometimes behave differently depending on what is happening in my life.

Maybe the reason we are so fascinated by personality types is not because we want to reduce ourselves to four letters. Maybe it is because we are constantly trying to understand the person behind them.

After all, an INFJ is not just an INFJ, an ENFJ is not just an ENFJ, and an INTJ is not just an INTJ. Behind those four letters is an entire human being—and that is far more complicated, and far more interesting, than any personality test could ever explain.