Personality test

5 Surprising Facts You Didn't Know About the Myers-Briggs Personality System

1️⃣ Not scientific, but popular

Although the MBTI® is often criticized for lacking strong scientific backing, it remains one of the most widely used personality tests in the world. From corporate hiring and team-building programs to education — and even online dating! — it continues to be a go-to tool for understanding people and how they interact.

2️⃣ Used by NASA and the U.S. Army

The MBTI® has even been used by organizations like NASA and the military. In the U.S. Army, it’s been applied to assess how well tank and aircraft crews might work together — helping to build teams with better compatibility and communication.

3️⃣ Often used in career counseling

The Myers-Briggs typology is often used to help people choose the right career path. For example, extroverts are more likely to be steered toward communication-focused roles, while introverts are often recommended for more analytical or creative work — where deep focus and independence really shine.

4️⃣ Some types are less common than others

The rarest personality type is INFJ (Introverted, Intuitive, Feeling, Judging), found in less than 2% of the population. This type is often linked to deep thinkers, visionaries, and humanitarians — people who are both idealistic and driven to make a meaningful impact on the world.

5️⃣ The most common MBTI® personality type differs between men and women:

Among women, the most common personality type is ISFJ, also known as “The Defender.” Statistically, around 19% of women fall into this category. They’re often seen as caring, responsible, and supportive — people who value order, tradition, and helping others. Many nurses, teachers, and social workers are ISFJs, drawn to roles where they can quietly make a difference.

Among men, the most common personality type is ISTJ, known as “The Logistician.” Roughly 16% of men fall into this category. ISTJs are reliable, organized, and practical — they value logic, structure, and responsibility. They prefer clear rules and well-defined roles, making them well-suited for careers in the military, engineering, and administration.

MBTI® Test: What Is It and How Is It Different from the 16 Personality Types?

The MBTI® is a personality type assessment developed by Katharine Briggs and Isabel Myers, based on the theories of Carl Jung. It’s widely used in corporate and educational environments to help people understand their strengths and weaknesses, improve communication, and explore potential career paths. While the MBTI is popular and easy to use, it has also faced criticism for its strict categorization of individuals and limited scientific backing.

Although the MBTI® is considered the “official” personality test, many alternatives have emerged over time. Some were created by professionals for serious use, while others are designed purely for entertainment. Despite ongoing scientific debate, the MBTI remains popular thanks to its accessibility and practical value in everyday life.

The main difference between the MBTI® (Myers-Briggs Type Indicator®) and the “Personality Test” lies in their approach to personality typology, their scientific basis and their developers.

1. Basis and methodology

• The MBTI® is based on the theories of C.G. Jung and was developed by Katharine Briggs and Isabel Myers. It defines 16 distinct personality types, each formed by a unique combination of four opposing preference pairs: Extraversion vs. Introversion, Sensing vs. Intuition, Thinking vs. Feeling, and Judging vs. Perceiving.
• The ispeedreader personality type is a modern test developed by the ispeedreader team that is based not only on Jung, but also on the Big Five open source model and is available on GitHub in the rubynor/bigfive-web repository Unlike the MBTI®, additional aspects of personality, such as identity, are taken into account here, making it more flexible and variable.

2. Scientific validity

• The MBTI® has faced criticism for its lack of strong scientific validation and for dividing people into rigid, fixed personality types.
• The personality type assessment from ispeedreader, thanks to the inclusion of Big Five elements, is considered more reliable from a psychometric perspective. Unlike rigid categories, it allows personality traits to be measured along a spectrum, providing a more nuanced and flexible understanding of each individual.

3. Application and availability

• MBTI® is an officially patented system licensed by the Myers-Briggs Company, and professional use requires paid certification.
• The ispeedreader personality test is available online for free, making it more accessible and appealing to a broader audience.

In summary, the MBTI® is a classic system focused on fixed personality types, while the ispeedreader personality test offers a more modern and flexible approach — combining Jungian theory with the scientifically grounded Big Five model.

Why should I take the test? What will I learn?

More than 2 million people take a personality type test every year, and in the Western world, every second person knows their type. Personality typing is used in over 21 areas of life, from career and education to relationships and personal growth. Whether you're ESTP, ISTJ, INFP, ENTP, or any of the other 16 types — these universal personality codes are recognized and understood across the globe, including in countries like South Korea, the USA, the UK, Japan, China, Canada, Germany, Australia, France, India, New Zealand, and much of the modern world.

It’s never too late to discover your personality type! Take the test for free right here at the link below — and start learning more about yourself today.

1️⃣ "I don't know who I am or what I want out of life."

✅ Solution: Recognize your strengths and weaknesses, which helps you find your place in life.

💡 Example:

• If you're an INTP, you're more comfortable working in analytics, IT, science.
• If you are an ENFJ, your strength is working with people and inspiring others.

🎯 Result: No more searching for yourself → you know which direction to take.

2️⃣ “I find it difficult to communicate with people, they don't understand me”.

✅ Solution: Understanding your own and others' communication style helps build harmonious relationships.

💡 Example:

• Are you an introvert? Now you know how to comfortably build boundaries and not burn out.
• Are you an extrovert? Understand why silent people don't always want to ignore you.

🎯 Result: Easier to get along with people → less conflicts and misunderstandings.

3️⃣ “I have a hard time making decisions, I doubt all the time.”

✅ Solution: Learn how your type makes decisions (logic, emotion, intuition, facts).

💡 Example:

• INTJ - works better with long term planning.
• ESFP - acts spontaneously, but that's not always a bad thing!

🎯 Result: Understand your decision strategy → stop being afraid of mistakes.

4️⃣ “I don't understand why I'm having relationship problems”

✅ Solution: Recognize your love style, compatibility and weak points in a relationship.

💡 Example:

• If you're an INFJ, you care about emotional depth.
• If you're an ENTP, you need freedom and intellectual challenge.

🎯 Result: You choose your partner consciously → the relationship becomes healthy and clear.

5️⃣ “I find it difficult to choose a career and dream job”

✅ Solution: Find out what profession you'll be effective and happy in.

💡 Example:

• ESTP - feels better in an active, dynamic environment (business, sales).
• ISFP - creative person who cares about freedom of expression.

🎯 Result: No more wasting years in a hated job → choose a profession that suits you.

6️⃣ “I don't understand how to motivate myself.”

✅ Solution: Find out what really motivates you and how to avoid procrastination.

💡 Example:

• ENTJ - you need a clear challenge and goal.
• INFP - a deep sense of purpose is important.

🎯 Result: You understand your motivation system → you start to act consciously and productively.

7️⃣ “I often burn out because I misallocate my energy.”

✅ Solution: Learn how your psychotype revitalizes and prevents stress.

💡 Example:

• Introverts (I) burn out if they socialize too much - they need quiet and solitude.
• Extroverts (E) feel bad if they sit alone for long periods of time - they need movement.

🎯 Result: You learn how to distribute energy properly without burning yourself out.

8️⃣ “It's hard for me to adapt to change, I'm afraid of change.”

✅ Solution: Learn what changes are comfortable for you and how to approach them correctly.

💡 Example:

• S-types (Sensorics) feel better in a stable environment. They benefit from clear plans.
• N-type (intuitives) on the contrary, get high on new opportunities and don't tolerate routine well.

🎯 Result: You learn to manage change rather than fear it.

9️⃣ “I have a hard time concentrating and seeing things through to completion”

✅ Solution: Learn how to structure your work better and stay focused.

💡 Example:

• P-type (perceptive people) switch easily but have a hard time completing things - they need a checklist and a deadline.
• J-type (rational people) are good at planning but can be too rigid - they need to learn flexibility.

🎯 Result: Understand what productivity methods are right for you → stop putting off important things.

🔟 “I feel like I'm ‘different’ and don't fit in with society.”

✅ Solution: Realize that everyone is different and begin to appreciate your unique characteristics.

💡 Example:

• INTP may seem too “detached from reality” to himself, but that's his strength - analysis, logic, out-of-the-box thinking.
• The ESFJ may worry that he is too “dependent on the opinions of others”, but his strength is to create harmony in the team.

🎯 Result: Accepting yourself as you are → no more trying to be “like everyone else”.