ESTP-AD Entrepreneur Dark Confidence: Love & Work Guide

Have you ever felt in a meeting where everyone around you is rushing to reach a conclusion, “Wait a minute, there must be other ways”?
You might be someone who senses signs of change faster than anyone else and can instantly think “This is it!” and take action.
Rather than boring daily routines, you seek exciting new challenges that make your heart race.
Such a person like you would have a natural charm that attracts people.

However, sometimes you might regret thinking “I made another impulsive decision…”
When you try to make long-term plans, somehow you don’t feel excited and can’t continue.
People around you probably tell you “Think a little more carefully.”

In this article, we’ll deeply explore the attractive characteristics of you as an ESTP-AD type.
We’ll explain why you’re passionate in love but relationships don’t last long, and the situations where you shine at work as well as points to be careful about.
Along with discoveries like “So this is the kind of person I am,” you should find hints for a more fulfilling life.
Why don’t we start a journey together to make the most of the energy you possess?

Once again, personality researcher and author of Villain Encyclopedia, Tokiwa (@etokiwa999), will provide the explanation.
※We have developed the HEXACO-JP Personality Assessment! It has more scientific basis than MBTI. Tap below for details.

Overview of HEXACO

What is HEXACO

“Why do people have such different personalities?” A relatively new model that answers this question is “HEXACO.”
With six personality axes, you can understand yourself as a human being three-dimensionally.
The six letters H-E-X-A-C-O are the origin of its name.
Each represents an important aspect of human personality.

Specifically, it consists of the following elements:

• H: Honesty-Humility
• E: Emotionality
• X: eXtraversion
• A: Agreeableness
• C: Conscientiousness
• O: Openness

This model can analyze personality more precisely than the traditional Big Five.
Particularly with the addition of the new perspective of “Honesty-Humility,” more realistic human understanding has become possible.
The background of your own behavioral patterns and values should surely become visible.
The answers to things you’ve felt like “Why am I like this?” might be here.

What is HEXACO? Overview, Genetics, Diagnosis & MBTI Relations

64 Classifications by HEXACO

Each of the 6 elements is classified into 64 types by high and low. Specifically, they are as follows.

• H: Honesty-Humility
  • High → Light (L: Light)
  • Low → Dark (D: Dark)
• E: Emotionality
  • High → Turbulent (T: Turbulence)
  • Low → Assertive (A: Assertiveness)
• X: eXtraversion
  • High → Extroverted (E: Extrovert)
  • Low → Introverted (I: Introvert)
• A: Agreeableness
  • High → Feeling (F: Feeling)
  • Low → Thinking (T: Thinking)
• C: Conscientiousness
  • High → (J: Judging)
  • Low → (P: Prospecting)
• O: Openness
  • High → Intuitive (N: iNtuitive)
  • Low → Sensing (S: Sensor)

These are connected like 16personalities to express types. Now let’s introduce the various types!

What is ESTP-A (Entrepreneur・Assertive)?

ESTP-A is a type with high extraversion (E), low openness (S), low agreeableness (T), low conscientiousness (P), and low neuroticism (A) in the Big Five.

• High adaptability and problem-solving ability
• Action-oriented and adventurous spirit
• Realistic and practical thinking
• Confident risk-taking
• Strong sociability and influence

They make the most of the present moment, quickly grasp situations and take action. They value practical experience and solve problems efficiently.

In interpersonal relationships, they demonstrate attractive communication skills and draw people to them. They welcome change and new challenges, and have high stress tolerance, allowing them to respond calmly even in crisis situations. They have strong self-efficacy and believe in their own abilities.

ESTP-A (Entrepreneur-Assertive) Scientifically Explained

Characteristics of ESTP-AD

Characteristic ①: “Ability to act instantly and sharp intuition”

Aren’t you someone who can sense “there’s something important today” the moment you enter a meeting room?
You can sensitively detect the atmosphere and changes in the environment, and intuitively judge “now is the time to act.”
And actually, you tend to proceed with things by “let’s just try it” rather than theory or planning.
You probably feel it’s much faster to learn by actually touching and experiencing rather than reading lengthy instruction manuals.
Here are the characteristics of action-oriented people like you:

• Can instantly read changes in situations
• Can naturally “act rather than think”
• Value learning from actual experience above all else

You’re probably often told by others “You’re not afraid of failure, are you?”
Indeed, for you, failure feels like “valuable data for the next step.”
That’s why you can keep challenging new things, and those experiences lead to future success.
Rapidly changing environments are the stage where you can demonstrate your true value.
This trait allows you to confidently move forward in situations where many people would hesitate.

Characteristic ②: “Thrills are the spice of life”

When stable daily life continues, don’t you feel somewhat unsatisfied and find yourself looking for “something interesting”?
For you, risk isn’t something to avoid, but rather “something that makes life enjoyable.”
When you encounter unpredictable developments or slightly thrilling situations, you somehow get excited.
When you hear words like “ordinary” or “safe,” somewhere in your heart you probably feel “boring.”
Here are the characteristics of thrill-seekers like you:

• Actively jump into unknown experiences
• Can remain calm even in tense situations
• Have the mental capacity to enjoy unexpected events

However, this trait sometimes surprises people around you.
Especially cautious people might worry and say “You should think a bit more before acting…”
Also, since you’re not very bound by social rules, friction sometimes arises.
Still, your natural charm and ability to adapt to any situation
usually becomes the power to successfully overcome such problems.

Characteristic ③: “Strong will to maintain your authenticity”

Don’t you naturally think “It’s okay not to be the same as everyone else” and “I have my own way of doing things”?
You deeply trust your own abilities and judgment, and even in difficult situations, you have a sense that “things will work out somehow.”
This unwavering confidence becomes the driving force for generating new ideas and innovative approaches.
You probably prioritize practicality – “this is effective” – over general “this is how it should be done” frameworks.
Here are the characteristics of confident people like you:

• Have strong conviction in your own values and judgment
• Flexibility not bound by existing methods
• Mental strength not swayed by others’ evaluations

This trait allows you to generate innovative ideas that others wouldn’t think of.
On the other hand, sometimes consideration for organizational rules or others’ feelings may be lacking.
Especially in team settings, you might be told “please adapt to others a bit more.”
But your natural charm and situational adaptability
might be helping you ultimately achieve good balance, including with such challenges.

Strengths and Weaknesses of ESTP-AD

Strengths of ESTP-AD

Your greatest weapon is your amazing ability to adapt to environments like a chameleon.
Even when sudden changes or troubles occur, you can view them positively as “this is getting interesting.”
And you can quickly come up with optimal solutions on the spot and actually put them into action.
This ability is extremely valuable, especially in today’s rapidly changing society.
Here are the wonderful strengths you possess:

• Insight to judge calmly in any situation
• Natural charm and communication abilities that attract people
• Ability to generate realistic and effective solutions rather than theoretical ones

You can probably quickly connect with people you meet for the first time and make them think you’re enjoyable to talk with.
Therefore, your network naturally expands, and you’re often blessed with various opportunities.
Furthermore, your original thinking and action-oriented approach brings fresh air to many projects.
These traits make you an indispensable presence for organizations and colleagues.
In fact, your leadership probably naturally emerges in many situations.

Weaknesses of ESTP-AD

Don’t you sometimes think later “If I had thought more back then…” because your “if it’s fun now, that’s all that matters” feeling is too strong?
Your action-oriented nature is wonderful, but sometimes you make decisions with the momentum of “alright, let’s do it!”
As a result, you might not fully consider long-term impacts or other people’s feelings.
Especially when facing important decisions, you might have a tendency to prioritize speed too much.
Here are the points you should be careful about:

• Focus too much on “right now” and overlook future considerations
• Prioritize execution over planning
• Have difficulty noticing others’ emotional changes

Also, your strong confidence may sometimes be misunderstood as “somewhat intimidating.”
In situations requiring teamwork, you might unconsciously proceed at your own pace, creating friction.
Furthermore, because you constantly seek stimulating environments, routine daily tasks may feel painful.
These characteristics can pose challenges in building long-term relationships and achieving stable results.
But don’t worry – these are “misunderstood strengths” that can be improved with awareness.

ESTP-AD’s Romantic Relationship Tendencies and Improvement Strategies

ESTP-AD’s Romantic Tendencies

Your romance tends to be passionate and dramatic, like a Hollywood movie, doesn’t it?
Starting with “Want to go for a drive this weekend?” and before you know it, you’re watching the sunrise by the ocean.
Your ability to naturally come up with unpredictable and exciting date plans is your charm.
You rarely bore your partner, and being with you gives them the feeling that “every day is an adventure.”
Here are the characteristics of your romantic style:

• Proactive approach of “immediate action when you fall in love”
• Express affection through actions rather than words
• Prefer relationships that value mutual freedom

However, you struggle with “repetitive daily routines,” and may feel unsatisfied when relationships become routinized.
You might think “I love them, but things feel monotonous lately.”
Also, in valuing freedom so much, you may not notice when your partner seeks a stable relationship.
These traits might cause your partner to think “I wish they would engage with me more seriously.”
But this doesn’t mean you lack affection – it’s just a difference in how you express it.

Ideal Partner Personality: 3 Traits for Lasting Love

When Problems Arise in Romance and Improvement Strategies

Have you ever been told “Why are you suddenly saying that?” by your partner, leaving you confused thinking “Huh? What’s the problem?”
Your sense of speed and freedom is attractive, but sometimes it can make your partner anxious.
Your sudden suggestions or changes in plans might be interpreted by your partner as “Do they really think about me?”
Also, what feels natural to you – “let’s enjoy the moment” – might appear to your partner as “not taking the future seriously.”
Here are key points for building better romantic relationships:

• Consider not just “now” but also “the future” together
• Become more sensitive to your partner’s emotional changes
• Value the weight of promises and words

As an improvement strategy, try consciously making time to listen carefully to your partner.
Try asking “How was your day?” and practice listening until the end.
While surprises are wonderful, sometimes also make time to talk about the future together.
Conversations like “How would you like us to spend time together going forward?” can deepen your relationship.
If you add a little thoughtfulness to your natural charm, you should be able to build an ideal partnership.

MBTI & Love: All 16 Types’ Romantic Traits Explained

ESTP-AD’s Friendship Tendencies and Improvement Strategies

Friendship Tendencies

Don’t you always have a group of friends around you filled with laughter?
Whether at parties or work gatherings, people somehow gravitate toward you.
This is thanks to your natural charm of being “fun to be around.”
When a friend is in trouble, you provide practical support saying “Let’s go out for drinks!”
Here are the characteristics of your popular friendship style:

• Sociability that allows you to quickly connect even with strangers
• Prioritize sharing “fun times” above all
• Generously provide concrete and practical help

On the other hand, when friends confide serious concerns, while you encourage them saying “Cheer up!”
you might struggle a bit with deeply empathizing with their emotions.
Your strong desire to “have fun together” might mean you miss that what your friend really needs is “just someone to listen.”
Also, in always seeking stimulating relationships, you might undervalue friendships during peaceful periods.
This doesn’t mean you don’t care about your friends – it’s just a characteristic of your way of expressing affection.

How Personality Type Shapes Friendship Quality & Formation

When Problems Arise in Friendships and Improvement Strategies

Have you ever been confused when a friend said “I feel distant from that person lately” and you thought “Why? I’m treating them normally”?
While you’re good at sharing fun times,
you might find it difficult to pick up on the complex emotions deep in your friends’ hearts.
Also, your free-spirited behavior can sometimes shake your friends’ trust.
You might make them feel like “they stood me up” or “they brushed off my important concerns.”
Here are key points for nurturing deeper friendships:

• Practice noticing subtle changes in others’ emotions
• Make time to quietly be together, not just during fun times
• Value promises and trusting relationships with friends above all else

As an improvement strategy, when friends are talking, try starting by putting away your phone and looking them in the eyes while listening.
Try asking emotion-focused questions like “That must have been tough” or “How did that make you feel?”
Also, sometimes say “Let’s talk more leisurely next time” and spend time with friends when you don’t have anything particular planned.
Even without doing anything special, just being there becomes a great source of support for your friends.
If you add deep compassion to the brightness you possess, you should be able to build lifelong friendships.

MBTI & Friendship: 16 Types’ Tendencies & Tips

ESTP-AD Parenting Tendencies and Improvement Strategies

Parenting Tendencies

Your children probably boast that “My dad (mom) is different and interesting,” don’t they?
Playing together and getting muddy at the park, or suddenly saying “Let’s go camping today!” and heading off on an adventure.
You support your child’s “I want to try it!” feelings with “That sounds good, let’s try it.”
You probably prioritize education that emphasizes “actually experiencing it” over textbooks and reference books.
Here are the characteristics of adventurous parents like you:

• Respect your child’s curiosity and independence to the fullest
• Teach the spirit of “It’s okay to fail, just try it”
• Create fun memories by being physically active together

However, your “as long as now is fun” attitude can sometimes become a bit of a challenge in parenting.
You might struggle with daily management like “What about homework?” or “Are you prepared for tomorrow?”
Also, when children are feeling down, you might encourage them with “Cheer up, let’s go play!”
but you tend to lack time to carefully listen to their feelings.
This isn’t because you lack love, but rather it’s a characteristic of your way of expressing love.

Ideal Parent Personality Traits: What 30 Studies Reveal

When Problems Arise in Parenting and Improvement Strategies

Have you ever been startled when your child said “Dad (Mom) doesn’t listen to me”?
While you’re good at providing wonderful experiences for your children,
you might struggle to notice the complex emotions in your child’s heart.
Also, you might disappoint children by saying “Let’s do it next time” or “Maybe next time” and then forgetting.
Furthermore, helping them establish regular daily habits tends to be a challenge.
Here are points for building a better parent-child relationship:

• Consciously create “listening time” to pay attention to your child’s emotions
• Value not just fun, but also stable daily rhythms
• Build trust by always keeping promises, even small ones

As an improvement strategy, try treasuring the conversation of “How was your day?” when your child comes home from school.
Even when busy, please make a habit of looking your child in the eyes and listening for just 5 minutes.
Also, write down promises with your child on a calendar and make sure to follow through.
The trust that “Dad (Mom) keeps their promises” leads to your child’s sense of security.
If you add a bit of stability to the adventurous spirit and love you possess, you should be able to become the best parent for your child.

MBTI & Parenting: All 16 Types’ Strengths & Pitfalls

ESTP-AD Career Tendencies and Improvement Strategies

Career Tendencies

You’re probably the type who thrives like a fish in water in workplaces where you feel “This job looks interesting!” When everyone in the meeting room is scratching their heads over a problem, you solve it with practical ideas like “How about we try this?”
Industries with rapid change or environments where something different happens every day are what bring out your energy to the fullest.
In jobs with lots of human interaction, you’re probably good at capturing people’s hearts with your natural charm.

You’re probably evaluated by colleagues as “reliable” and “fun to work with.” Here are the characteristics of careers that suit you:

• Entrepreneur starting your own business
• Firefighter or paramedic requiring emergency decision-making
• Sales or marketing that moves people’s hearts

On the other hand, you might find jobs with daily repetitive tasks or requiring long-term planning painful.
Also, in workplaces with strict rules and many procedures, you might think “Why is this so troublesome?”
Furthermore, due to your personality that always seeks stimulation, you tend to feel unsatisfied with stable work environments.
These characteristics will be important factors when making career choices.
What’s important is finding an environment where you can make the most of the energy you possess.

Which Personality Traits Predict Career Success? 5 Key Findings

When Problems Arise in Career and Improvement Strategies

Have you ever been told by your supervisor “Could you please approach this more systematically?” and felt confused, thinking “But I am delivering results”? Your style of accumulating “the best choices for this moment” is wonderful, but
when working in an organization, you need a bit more long-term perspective.

Also, you might dismiss rules and regulations that you feel are unnecessary, creating friction with those around you.
Furthermore, since you’re good at proceeding at your own pace, you might struggle to match the rhythm of the entire team. Here are key points to make your career more fulfilling:

• Be conscious of balancing short-term results with long-term goals
• Make an effort to understand the reasons behind organizational rules
• Create a learning plan to systematically develop your skills

As an improvement strategy, I recommend first receiving professional career counseling.
Have them objectively help you map out a long-term career path that leverages your strengths.

Also, try to create time to discuss with senior colleagues and coworkers about “why these rules exist.”
Once you understand the reasons, you should be able to comply with conviction.
If you add a bit of strategic thinking to your existing drive and adaptability, you’ll surely be able to build an ideal career.

MBTI & Career: Best Jobs for All 16 Personality Types

ESTP-AD Work Tendencies and Improvement Strategies

Work Tendencies

You’ve probably become the person everyone relies on in the workplace – “the go-to person when in trouble,” haven’t you? When problems arise and everyone else is panicking, you can calmly respond with “Stay calm, let’s try this approach.”
And you actually provide accurate, practical solutions that save the team from crisis.
In tasks involving frequent interactions with people, you can quickly close the distance with others through your natural charm.

Your colleagues surely trust you as “reliable to work with.” Here are the characteristics of your work style:

• Quick decision-making with a “hands-on before thinking” approach
• Flexibility to adapt your methods according to situations
• An attitude of “let’s try it” before giving up and saying “it’s impossible”

On the other hand, you may find detailed data entry or document creation tedious.
You might get frustrated with organizational rules, thinking “Why are these procedures so complicated?”
Also, when monotonous tasks continue, you tend to look elsewhere, wondering “Isn’t there more interesting work?”
These characteristics can influence your role assignments and task choices in the workplace.
The important thing is creating an environment where you can focus on tasks that maximize your strengths.

5 Personality Traits of High Performers: 550K Study

When Work Becomes Problematic and Improvement Strategies

Have you ever been told “Please don’t proceed with things different from the team’s direction on your own” and felt unconvinced, thinking “But it was effective”? Your idea that “achieving results is the top priority” is correct, but
when working in an organization, processes and procedures become equally important.

Also, you might struggle with meetings that involve “discussing things thoroughly together” and end up proceeding alone.
Furthermore, you might lose concentration in the middle of long-term projects, thinking “I’m already bored with this.” Here are key points for becoming a better team player:

• Value not only your own judgment but also the overall team direction
• Consciously make time to listen to colleagues’ opinions
• Be aware of both short-term results and long-term goals

As an improvement strategy, try consulting with colleagues by asking “What do you think about this?” before implementing any new ideas.
When your creativity combines with your team members’ caution, better results should emerge.

Also, break long-term projects into small milestones and progress while experiencing a sense of achievement.
By setting boundaries like “this far this month, this far next month,” you can continue without getting bored.

When your drive and teamwork merge, you should be able to achieve greater results in the workplace.

MBTI & Work: All 16 Types’ Strengths, Pitfalls & Fixes

Compatible Types with ESTP-AD

Compatible Types: People with S Characteristics

You and “S-type” people can build a relationship like ideal business partners. When you suggest “How about this idea?” S-type people will create specific execution plans saying “Then let’s proceed with these steps.”
You naturally sync up because you both value “realistic and effective results.”

You’ve probably experienced how working together on projects brings out the best in each other. Here are the reasons why you and S-types are compatible:

• You can share the value of “practice over theory”
• You can recognize and stimulate each other’s drive
• When problems arise, you can cooperate to find realistic solutions

In particular, your “let’s try it anyway” spirit and the S-type’s “steady progress” attitude complement each other beautifully.
You find new possibilities, and S-type people turn them into reality.
Also, the S-type’s caution can sometimes put the brakes on your impulsive decisions.
However, the S-type’s “let’s be a bit more careful” pace might sometimes feel a little frustrating to you.
Still, if you understand each other’s differences, this is a relationship that can demonstrate the best teamwork.

Do Friends Share Personality Traits? 5 Key Findings

Compatible Type: People Who Include D

You and “D-type” people can become the ultimate combo that charges toward goals with rocket-like momentum. You both share the values of “results are everything” and “nothing starts if you fear risks.”
Therefore, even with challenges that others would hesitate at as “too dangerous,” you should be able to hit it off saying “let’s try it!”
Here are the reasons why you and D-type are compatible:

• You can understand and support each other’s ambitious goal-setting
• Your “act now” decision speeds match at the same level
• Through competitive spirit, you can push each other to higher levels

In particular, your “find the optimal solution on the spot” ability and the D-type’s “show clear vision” leadership work wonderfully together.
You respond flexibly according to the situation, and D-type people decide the overall team direction.
Also, the D-type’s long-term strategic thinking can complement your short-term focused action patterns.
However, since you both have strong personalities, when opinions clash, you might have intense discussions.
Still, if you recognize each other’s abilities and cooperate, this is a relationship that can achieve amazing results.

MBTI Compatibility: Best Matches for All 16 Types

Summary of ESTP-AD

You, the ESTP-AD type, are someone who lives the adventure of life more enjoyably and dynamically than anyone else. You’re good at riding the waves of change and have a natural charm that attracts people around you.
Even in difficult situations, you’re a reliable person who can respond positively with “it’ll work out somehow.”
You value learning from actual experience and have probably achieved results through practice rather than theory.
On the other hand, there’s still room for growth in long-term perspective and consideration for others’ emotions.
Here’s a summary of your characteristics:

• Flexibility and quick reflexes that can adapt to any environment
• Natural charm and bright energy that attracts people
• The adventurous spirit of “you won’t know unless you try”
• Tendency to focus too much on “now” and overlook the “future”
• Prioritizing your own values and being less aware of others’ feelings

If you want to become a more mature person, first try to develop the habit of “thinking from the other person’s perspective.”
And sometimes take time to stop and think, “What long-term impact will this action have?”
It’s also important to gradually nurture warmth that empathizes with others’ emotions and a sense of social responsibility.
Through this growth, you can become someone who is loved and trusted by more people.
If your natural charm and ability to take action are combined with compassion and planning skills, you should truly become an invincible presence.

FAQや注意点

HAXACOの結果と、16personalities（通称MBTI診断）やMBTI（本家）と結果が変わる

1. 性格は遺伝と環境の影響を受けるため、環境が変われば回答も変わります（例、疲れてると情動性が変化するなど）。遺伝について詳しくはこちら。
2. 年齢次第で回答のブレがあります。詳しくはこちら。
3. タイプ分類は各数値が3以上、3未満で行っているため、3に近い値だと、質問の聞き方やその時の環境次第で結果が変わりやすくなります。タイプよりも数値を見てください。
4. MBTI（本家）や16personalities（通称MBTI診断）は質問設計の段階でどの程度統計的な処理をしているか論文が見当たらないため不明確です。一方で、ビッグファイブやHEXACOはそういった論文が簡単に見つかりますし、今回のHEXACO-JP診断は論文ベースです。
5. MBTIや16personalitiesは普段の行動（学力・年収など）や、脳・遺伝などとの比較した研究論文があまり多くない一方で、ビッグファイブやHEXACOは数多く存在します。
6. そもそもHEXACOはビッグファイブの要素の変形なので似て非なるものです。HEXACOの正直・謙虚さは、ビッグファイブの協調性と神経症傾向から抽出されています。下記「補足」参考。

その他にもご質問があれば運営者のトキワ（@etokiwa999）までご連絡ください。

性格診断の結果はあくまで人生の「ヒント」まで

先にも書きましたが、性格は遺伝と環境の影響を受けます。遺伝の影響で、ブレ幅は一定ですが、環境次第である程度答えがブレます。

またビッグファイブやHEXACOの研究論文では学力や年収などと相関分析をしていますが、自然科学の実験ほど大きな相関係数ではありません。相関係数は最小-1、最大1ですが、だいたい-0.4～0.4ほどが多いです。もちろん高いものもあります。0.8や0.9ではなく、それに比べたら低いです。

ただそれでも様々な研究はありますので、「占い以上、自然科学未満」と思ってください。心理学や占いを100％否定しているわけではありません。

補足

16personalities（通称MBTI診断）の概要

16personalities（16タイプ性格診断）は、MBTI（Myers-Briggs Type Indicator）とビッグファイブをベースにして作られています。

厳密には16personalitiesとMBTIは別物なのです。

MBTIは、ユングの心理学的類型論を基に開発された性格診断ツールです。

16personalitiesはMBTIの4つの指標（E外向-I内向、S感覚-N直観、T思考-F感情、J判断-P知覚）を採用しつつ、アイデンティティ（AとT）という指標の追加、独自の質問項目・評価基準を設けています。

この性格診断の良いところとしては、韓国アイドルが広めたり、恋愛マッチングアプリでも使われたりするなど、とても有名で、回答数がとても多いことにあります。それを利用して分析して論文として公開すれば信頼性は高いかもしれません。

ただし、悪いところとしては、科学的な裏付けが弱いところがあります。査読付き論文の数が少ない、統計処理の方法が不明確、性格と学力・収入・脳機能・遺伝的要因などとの関連性について十分な根拠が提示されていない、などが理由です。

16personalitiesとは？科学的根拠やMBTIとの違いを解説

MBTI（本家）の概要

MBTIは性格を16タイプに分類する心理学の理論です。

そもそもMBTIとは、マイヤーズ・ブリッグス・タイプ・インジケーター（Myers-Briggs Type Indicator）の略称です。

MBTIでは、以下の4つの指標を組み合わせて性格を16タイプに分類します。

• 外向性（Extraversion）か内向性（Introversion）
• 感覚（Sensing）か直観（iNtuition）
• 思考（Thinking）か感情（Feeling）
• 判断（Judging）か知覚（Perceiving）

つまり、MBTIでは自分の性格傾向を「ISTJ」や「ENFP」などの4文字で表現するのです。

16personalitiesよりは論文は存在しますが、ビッグファイブやHEXACOほど頑健な研究結果が出ているわけではありません。

MBTIとは？16タイプ性格紹介(恋愛や仕事)・科学的根拠を解説

ビッグファイブの概要

性格心理学において最も有力な特性理論の一つが「ビッグファイブ（Big Five）」です。

ビッグファイブは、開放性、誠実性、外向性、協調性、神経症傾向の5つの特性を測定します。

また、16personalitiesやMBTIはタイプ分類（例、外向的か内向的かのどちらか）を用いるのに対して、ビッグファイブが特性を連続的な数値で評価する（例、外向性3.5）点も大きな違いです。

さらに、古くから研究されており、論文数も多く、学力や所得、脳や遺伝など、他の分野でも多くの研究が行われています。ビッグファイブの方が比較的、科学的な裏付けが強いと言えます。

ビッグファイブ(Big Five)診断とは？概要・遺伝・MBTIとの関連

MBTI・ビッグファイブ・HEXACOの相関関係

MBTIの4指標とビッグファイブの5因子には相関関係があります。

この相関を示した代表的な研究に、「The relationship between the revised NEO-Personality Inventory and the Myers-Briggs Type Indicator」という論文があります。

また、MBTI（本家）とビッグファイブを参考にして作られた16personalities（通称MBTI診断）では、ビッグファイブの神経症傾向が「アイデンティティ」と呼ばれており、自信（Assertive）か、慎重（Turbulent）かで分類されています。

これらの関係をまとめたのが以下の図です。

一番右には、比較的新しい性格診断である「HEXACO（ヘキサコ）」があります。ビッグファイブに1つ指標「正直・謙虚さ」を加えて改良され、ダーク特性（倫理観）が分かるようになりました。

今回のHEXACO-JP性格診断では16personalitiesの5文字に加えて、ダークD/ライトLを付けてより詳細に分析できるようにしています。