Understanding MBTI: What Is It and Can It Change? Why Do People Get Different Types Over Time?

If you have ever taken the MBTI and found that initially you were classified as INFP, but years later the result changed to ENFP, or from INTJ to INFJ, many might wonder, "So, which type am I really? " or even question whether MBTI can truly change.

This can be explained from psychological and human behavior perspectives because MBTI is not a tool that defines a person's permanent identity but rather a guide to understanding how we process information, make decisions, and our behavioral tendencies at a given time.

What is MBTI? Why is it so popular worldwide?

MBTI (Myers–Briggs Type Indicator) is a personality assessment developed by Katharine Cook Briggs and Isabel Briggs Myers, influenced by the " personality types concept of Swiss psychologist Carl Jung. It categorizes personalities into 16 types based on four pairs of letters:

1. Extraversion (E) – Introversion (I): Source of energy and interaction with the world.

• E (Extraversion) typically gains energy from social interactions and exchanging ideas.
• I (Introversion) usually recharges by spending time alone and reflecting internally.

This does not mean E types are simply talkative or I types are shy, as introverts can also be leaders or socially skilled.

2. Sensing (S) – Intuition (N): How information is received and worldviews.

• S (Sensing) focuses on concrete facts, details, and tangible experiences.
• N (Intuition) is interested in the big picture, concepts, and future possibilities.

3. Thinking (T) – Feeling (F): Decision-making preferences.

• T (Thinking) relies on reason, principles, and logic.
• F (Feeling) considers values, emotions, and impacts on people.

4. Judging (J) – Perceiving (P): How one manages external life.

• J (Judging) prefers structure, plans, and clarity.
• P (Perceiving) is flexible, open to options, and adapts to circumstances.

Combining these four pairs creates 16 personality types, such as INFJ, INFP, ENFP, INTJ, and ESTJ, each reflecting different thinking, information processing, and decision-making styles.

Today, MBTI is increasingly used as a tool for self-understanding in work, communication, and relationships. However, it is not a rigid label but a way to recognize one's strengths and behavior patterns at various life stages.

Clearing up doubts: Can MBTI change? Why do people get different types on repeated tests?

Many wonder, why their first MBTI result differs from one taken years later, for example, shifting from INFP to ENFP or from INTJ to INFJ, raising the question of which truly reflects their identity.

The answer is that MBTI results do not exactly change but can develop over time. This depends on life experiences and circumstances.

Although many consider MBTI like a fixed blood type from birth, personality is influenced by many factors including life experiences, age, environment, work, and changing roles over time. These changes don't mean the original result was wrong but show that "our behavior" can adapt according to life contexts.

For example, a person may be flexible and adventurous in university, leaning towards Perceiving (P), but in the workforce, with more responsibilities and need for planning, may exhibit more Judging (J) behaviors.

Or someone who was quiet and introspective may develop more Extraversion (E) traits through social work experiences or leadership roles.

Reasons why MBTI results can change include

the life stage when the test is taken, as many answer based on current situations, such as feeling more structured during busy work periods or more open to opportunities when starting new ventures.

Changes are not caused by the test alone but relate to how we perceive and evaluate ourselves. Humans can grow and change throughout life — gaining confidence, improving social skills, or becoming more responsible — so it’s natural to have different thoughts and behaviors with age.

However, many psychologists see human personality as more complex than 16 types, meaning MBTI results can shift due to life experience, roles, test-taking approach, and personal growth. Changing types doesn’t mean becoming a different person.

Therefore, MBTI should be used as a tool to understand oneself, not a box that limits what one can do, but a guide to recognizing potential and fostering self-development.

Thairath Plus invites you to deepen your understanding of "MBTI" at the academic bar event "TYPE TO MEET YOU | EP.1 TYPE TO SHINE YOURSELF"

If you've taken the MBTI test and wondered,"How can I use my type to grow further?"or want to exchange views with others interested in personality, the event "TYPE TO MEET YOU | EP.1 TYPE TO SHINE YOURSELF" by Thairath Plus might be the space you seek. This event is presented as

an academic bar x MBTI Community, inviting everyone to understand MBTI beyond just knowing their type through a lecture by BeruArny Channel, an MBTI® Certified Practitioner, exploring how to apply personality understanding in work, life, and personal growth. Another highlight is the SHINING PANEL DISCUSSION, a relaxed talk about personal growth beyond MBTI, connecting life experience, work, and discovering one’s potential. Panelists include

Bell-Benjrat Chatsayanusorn and Ar-Piyanuch Phromprapan from BeruArny Channel,

• Champ-Tipakorn Wutipittayamongkol, writer and translator,
• Pharaoh-Techapon Kamsikaew from The Common Thread,
• and the session is hosted by Pao-Chaiya Rudeeniyomwut, editor of Thairath Plus.
• The event concludes with SHARING Q&A, an open space for attendees to ask questions, exchange opinions, and share experiences in a safe, no-pressure environment—no icebreaker games or forced activities. Participants can choose to talk, share, or simply listen in their own style.

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