Do you know the ISFJ-A type?
This is one of the indicators that represents personality, and it greatly influences our behavior and way of thinking.
In this article, we will explain in detail what characteristics ISFJ-A people have, including their health, work, and interpersonal relationships.
Getting to know your own and others’ personalities well may lead to better communication and self-understanding.
Please read while comparing with your own and your friends’ personalities.
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.
目次
- 1 Scientific Background of ISFJ-T (Defender, Assertive Type)
- 2 ISFJ-T(Protector・Confident Type) Explained Scientifically
- 2.1 Good Physical Health
- 2.2 Engage in Healthy Behaviors
- 2.3 Easy to Get Along with People Who Have Both S and F
- 2.4 High Quality Friendships
- 2.5 High Couple Satisfaction
- 2.6 Relatively tends to have high academic performance
- 2.7 Values religious duties and precepts
- 2.8 When using social media, communicates through likes and encouraging comments
- 2.9 Properly maintains social distancing for infection control
- 2.10 Properly performs hand washing and other infection control measures
- 2.11 Having a certain number on a team improves team balance, even better when together with extroverted people
- 2.12 Competent and High Performance
- 2.13 Relatively Common Among Athletes
- 2.14 Common Among Writers/Editors, Artists/Creators, Counselors/Therapists
- 2.15 Excessive Perfectionism
- 2.16 Limiting Sweet Drinks
- 2.17 Health-conscious preference for vegetables, dairy products, and nuts
- 2.18 Tendency toward Right-Wing Authoritarianism (RWA) ideology
- 2.19 Do not engage in bullying
- 2.20 Relatively high self-esteem
- 2.21 Perform calm risk management
- 2.22 Schwartz’s Values: Benevolence, Conformity, Tradition, Security
- 3 Finally
Scientific Background of ISFJ-T (Defender, Assertive Type)
Overview of MBTI
MBTI is a psychological theory that classifies personality into 16 types.
MBTI is an abbreviation for Myers-Briggs Type Indicator.
MBTI classifies personality into 16 types by combining the following 4 indicators.
In other words, MBTI expresses your personality tendencies with 4 letters such as “ISTJ” or “ENFP”. A similar and very famous one is 16personalities, but this is different from MBTI.
Overview of Big Five
One of the most influential trait theories in personality psychology is the “Big Five”.
Big Five measures five traits: Openness, Conscientiousness, Extraversion, Agreeableness, and Neuroticism.
Also, while 16personalities and MBTI use type classification (e.g., either extraverted or introverted), Big Five evaluates traits with continuous numerical values (e.g., Extraversion 3.5), which is a major difference.
Furthermore, it has been studied for a long time, has many papers, and has been extensively researched in other fields such as academic ability, income, brain, and genetics. Big Five can be said to have relatively stronger scientific backing.
Correlation Between MBTI, Big Five, and HEXACO
There are correlations between the 4 indicators of MBTI and the 5 factors of Big Five.
A representative study showing this correlation is the paper “The relationship between the revised NEO-Personality Inventory and the Myers-Briggs Type Indicator“.
According to this paper, the correlations between MBTI and Big Five are as follows.
Also, in 16personalities, which was created based on MBTI and Big Five, neuroticism from Big Five is called “Identity“, and is classified as either Assertive or Turbulent.
On the far right is “HEXACO“, a relatively new personality assessment. It has been improved by adding one indicator “Honesty-Humility” to Big Five.
In this article, we will explain the personality types of 16personalities in detail based on these correlations.
Since they are originally Big Five and HEXACO research, if you want to know your personality more scientifically than MBTI or 16personalities, please try this HEXACO personality assessment.
What is ISFJ-T (Defender, Assertive Type)?
ISFJ-A is a type with low Extraversion (I), low Openness (S), high Agreeableness (F), high Conscientiousness (J), and low Neuroticism (A) from Big Five.
- High empathy and compassion
- Strong sense of responsibility and reliability
- Practical support abilities
- Confident decision-making
- Emphasis on tradition and harmony
They are sensitive to the needs of others and excel at providing support in practical ways. They pay attention to detail and value stability and consistency.
In interpersonal relationships, they value compassion and sincerity. While cautious about change, they adapt when they understand its necessity. They have high stress tolerance and can handle difficult situations calmly.
ISFJ-T(Protector・Confident Type) Explained Scientifically
Good Physical Health
ISFJ-A types tend to have relatively good physical health. This is related to their high conscientiousness (J) and low neuroticism (-A) characteristics in the Big Five.
ISFJ-A individuals often maintain regular lifestyle habits and are skilled at stress management. As a result, their overall health condition tends to be well-maintained.
Additionally, they have high self-management abilities and are sensitive to health-related information. They tend to be mindful of regular health check-ups and moderate exercise.
Please see this article for more details.
Engage in Healthy Behaviors
ISFJ-A types tend to actively engage in healthy behaviors. This is related to their high agreeableness (F) and conscientiousness (J) in the Big Five.
They care not only about their own health but also about the health of those around them. They strive to maintain a healthy lifestyle including balanced meals, moderate exercise, and adequate sleep.
Additionally, ISFJ-A individuals have high interest in preventive medicine and never miss regular health checkups or vaccinations. Their cautious and caring personality leads to the practice of healthy behaviors.
Please see this article for more details.
Easy to Get Along with People Who Have Both S and F
ISFJ-A types tend to get along particularly well with people who have both sensing (S) and feeling (F) characteristics. This is related to their low openness (S) and high agreeableness (F) characteristics in the Big Five.
ISFJ-A individuals have practical and realistic thinking while also having high empathy on the emotional level. Therefore, they naturally have high affinity with people who are similarly reality-oriented and emotionally rich.
They are skilled at understanding others’ feelings and providing practical support. This balanced characteristic helps in building and maintaining relationships.
Please see this article for more details.
High Quality Friendships
ISFJ-A types tend to have high-quality friendships. This is related to their high agreeableness (F) and conscientiousness (J), and low neuroticism (-A) characteristics in the Big Five.
ISFJ-A individuals are compassionate, sincere, and have stable personalities. They are loyal to their friends and become trustworthy presences.
They are also good listeners and can share their friends’ troubles and joys. Their warmth and reliability help in building lasting deep friendships.
Please see this article for more details.
High Couple Satisfaction
ISFJ-A types tend to have high satisfaction as couples. This is related to their high agreeableness (F) and conscientiousness (J), and low neuroticism (-A) characteristics in the Big Five.
ISFJ-A individuals are compassionate, devoted, and have stable personalities. They are sensitive to their partner’s needs and value relationships.
Additionally, their sincerity and sense of responsibility help build trust. Their high emotional stability also makes them good at managing stress within relationships.
These characteristics contribute to building long-term, highly satisfying couple relationships.
Please see this article for more details.
Relatively tends to have high academic performance
ISFJ-A types tend to have relatively high academic performance. This is related to the high agreeableness (F) and conscientiousness (J) characteristics of the Big Five.
ISFJ-A individuals have a strong sense of responsibility and excellent ability to proceed with things in a planned manner. They are serious about learning and reliably complete assignments and homework.
Additionally, their high agreeableness helps in group learning and building good relationships with teachers. Their high attention to detail also tends to result in fewer mistakes on tests and exams.
These characteristics contribute to overall academic improvement.
Please see this article for more details.
Values religious duties and precepts
ISFJ-A types tend to value religious duties and precepts. This is related to low openness (S) and high agreeableness (F) and conscientiousness (J) characteristics of the Big Five.
ISFJ-A individuals tend to respect traditions and existing values. They cherish religious teachings and customs and try to incorporate them into their daily lives.
Furthermore, their strong sense of responsibility and honesty are also reflected in fulfilling religious duties. They value their role as community members and often actively participate in religious activities.
These characteristics lead to an attitude that values religious duties and precepts.
Please see this article for more details.
ISFJ-A types tend to communicate through “likes” and encouraging comments when using social media. This is related to the high agreeableness (F) characteristic of the Big Five.
ISFJ-A individuals are considerate and sensitive to others’ emotions. Even on social media, they value supporting and encouraging others.
They often show their presence by giving positive reactions to others’ posts rather than through direct self-expression. They express warmth and support through like buttons and positive comments.
This characteristic helps build harmonious relationships even online.
Please see this article for more details.
ISFJ-A types tend to properly maintain social distancing as an infection control measure. This is related to the high introversion (I) characteristic of the Big Five.
ISFJ-A individuals have cautious and responsible personalities. They consider not only their own health but also the health of those around them.
During infectious disease outbreaks, they value following expert and authority instructions and maintaining appropriate distances. Their introverted nature also makes maintaining social distancing more natural for them.
Additionally, out of consideration for others, they actively take actions to prevent the spread of infection.
Please see this article for more details.
Properly performs hand washing and other infection control measures
ISFJ-A types tend to reliably practice basic hygiene habits such as hand washing as infection control measures. This is related to the high conscientiousness (J) characteristic of the Big Five.
ISFJ-A individuals have responsible personalities and pay attention to details. They reliably implement infection prevention measures such as hand washing, disinfection, and mask wearing.
They act with consideration for not only their own health but also the health of those around them. They take expert advice and public health guidelines seriously and put them into practice.
This honest and cautious attitude leads to thorough infection control measures.
Please see this article for more details.
Having a certain number on a team improves team balance, even better when together with extroverted people
When a certain number of ISFJ-A types are on a team, the team balance tends to improve. This is related to the high agreeableness (F) and conscientiousness (J) characteristics of the Big Five.
ISFJ-A individuals are caring, have a strong sense of responsibility, and can provide attentive consideration. They often maintain harmony within teams and serve as bridges between members.
Additionally, their high practical skills and reliability contribute to team stability. By partnering with extroverted people, they create an even more balanced team composition.
The introverted nature of ISFJ-A individuals and the vitality of extroverted people complement each other, creating diverse perspectives and approaches.
Please see this article for more details.
Competent and High Performance
ISFJ-A types tend to have high work performance. This is related to their characteristics of high conscientiousness (J) and low neuroticism (-A) in the Big Five.
ISFJ-A individuals have a strong sense of responsibility, pay attention to details, and excel at planning and executing work systematically. They focus on meeting deadlines and producing high-quality results.
Furthermore, their emotional stability helps them remain calm and cope effectively even in stressful situations. They also excel at teamwork, working efficiently while building good relationships with colleagues.
These characteristics contribute to their overall high work performance.
Please see this article for more details.
Relatively Common Among Athletes
ISFJ-A types tend to be relatively common among athletes. This is related to their characteristics of high agreeableness (F) and conscientiousness (J), and low neuroticism (-A) in the Big Five.
ISFJ-A individuals have a strong sense of responsibility and excel at teamwork. They approach practice seriously and are obedient to instructions from coaches and teammates.
Additionally, their emotional stability helps them perform calmly even under high-pressure situations. Their high attention to detail also makes them skilled at improving techniques and understanding tactics.
These traits may be factors that contribute to their success as athletes.
Please see this article for more details.
Common Among Writers/Editors, Artists/Creators, Counselors/Therapists
ISFJ-A types tend to be common in professions such as writers/editors, artists/creators, and counselors/therapists. This is related to their characteristic of high introversion (I) in the Big Five.
ISFJ-A individuals possess inner richness and deep insight. This translates into abilities to dig deeply into subjects as writers and editors.
Additionally, their creativity and delicate sensitivity bring out their talents as artists and creators.
Furthermore, their empathy and deep understanding of people become great strengths in supporting others as counselors and therapists.
These traits contribute to their success in these professions.
Please see this article for more details.
Excessive Perfectionism
ISFJ-A types may sometimes have tendencies toward excessive perfectionism. This is related to their characteristic of high conscientiousness (J) in the Big Five.
ISFJ-A individuals have a strong sense of responsibility and maintain high standards. They tend to try to do things accurately and perfectly.
While this perfectionism serves as a driving force for producing high-quality work and results, it can sometimes become excessive. They may hold unrealistic expectations for themselves and others.
It’s important for ISFJ-A individuals to balance striving for perfection with realistic goal setting. It’s crucial to recognize their limitations and maintain the flexibility to accept “good enough” states.
Please see this article for more details.
Limiting Sweet Drinks
ISFJ-A types may tend to limit sweet drinks. This is related to their characteristic of high agreeableness (F) in the Big Five.
ISFJ-A individuals tend to consider their health and the people around them. They understand the health effects of excessive consumption of sweet drinks and can exercise self-control to drink them in moderation.
Additionally, they recognize the importance of social norms and healthy lifestyles. Therefore, they tend to make healthy choices, such as reducing sugar intake.
However, this varies among individuals, and not all ISFJ-A types refrain from sweet drinks.
Please see this article for more details.
Health-conscious preference for vegetables, dairy products, and nuts
ISFJ-A types tend to be health-conscious and prefer vegetables, dairy products, and nuts. This is related to the high conscientiousness (J) trait in the Big Five.
ISFJ-A individuals have a strong sense of responsibility and take their health management seriously. They understand the importance of nutritionally balanced meals and actively try to incorporate healthy foods.
Vegetables, dairy products, and nuts are highly nutritious foods that help maintain health. ISFJ-A individuals recognize the benefits of these foods and tend to incorporate them into their daily diet.
Additionally, their high level of planning ability helps them consistently practice balanced eating.
Please see this article for more details.
Tendency toward Right-Wing Authoritarianism (RWA) ideology
ISFJ-A types may have a tendency to hold Right-Wing Authoritarianism (RWA) ideology in some cases. This is related to the low openness (S) trait in the Big Five.
ISFJ-A individuals tend to respect tradition and existing social structures. They value stability and order, and may not prefer rapid changes or uncertainty.
Such characteristics can sometimes lead to strong support for authority and traditional values. However, this is also greatly influenced by factors such as individual background, experience, and education.
What’s important is that this tendency doesn’t necessarily apply to all ISFJ-A individuals. Personal values and beliefs are diverse, and generalizations should be avoided.
Please see this article for more details.
Do not engage in bullying
ISFJ-A types have a strong tendency not to engage in bullying. This is related to high agreeableness (F) and conscientiousness (J), and low neuroticism (-A) traits in the Big Five.
ISFJ-A individuals are compassionate and sensitive to others’ emotions. They value harmony and try to avoid hurting others.
Additionally, their strong moral sense and sense of responsibility serve as factors that suppress antisocial behaviors like bullying. Their high ability to understand and empathize with others’ pain makes it rare for them to become bullies.
Furthermore, their emotional stability reduces the need to release stress or frustration through bullying.
Rather, ISFJ-A individuals are more likely to support victims of bullying or act as mediators.
Please see this article for more details.
Relatively high self-esteem
ISFJ-A types tend to have relatively high self-esteem. This is related to high conscientiousness (J) and low neuroticism (-A) traits in the Big Five.
ISFJ-A individuals have a strong sense of responsibility and tend to fulfill their duties properly. This seriousness and reliability lead to high self-evaluation.
Additionally, their emotional stability helps them manage stress and anxiety well and maintain confidence. Their compassion and supportive attitude toward others also contribute to enhancing their sense of self-worth.
However, when they have perfectionist tendencies, this can sometimes lead to self-criticism, so maintaining balance is important.
Overall, ISFJ-A individuals tend to recognize their strengths and view themselves positively.
Please see this article for more details.
Perform calm risk management
ISFJ-A types tend to perform calm risk management. This is related to high conscientiousness (J) and low neuroticism (-A) traits in the Big Five.
ISFJ-A individuals have a cautious and responsible personality. They excel at carefully analyzing situations and identifying potential risks.
Additionally, their emotional stability helps them make calm judgments even under pressure. They can evaluate risks logically without becoming overly emotional.
ISFJ-A individuals prefer to make plans that minimize risk, as they do not favor rapid changes or uncertainty.
However, they may sometimes miss opportunities by being overly cautious, so it’s important to strike a balance with moderate risk-taking.
Please see this article for more details.
Schwartz’s Values: Benevolence, Conformity, Tradition, Security
ISFJ-A types tend to value benevolence, conformity, tradition, and security according to Schwartz’s theory of values. These values are related to the Big Five characteristics of Introversion (I), Sensing (S), Feeling (F), and Judging (J).
Benevolence: ISFJ-A individuals value compassion and support for others. They are concerned with the well-being of people around them and emphasize mutual assistance.
Conformity: They value harmony in relationships and society. They tend to avoid conflict and seek peaceful solutions.
Tradition: ISFJ-A individuals respect existing values and customs. They value cultural continuity and social stability.
Security: They prioritize personal and social security. They tend to minimize risks and seek stable environments.
These values have a significant influence on ISFJ-A behavior and decision-making.
Please see this article for more details.
Finally
ISFJ-A type individuals have caring and responsible personalities. They pay attention to their health and value relationships with friends and romantic partners.
They approach their studies seriously, so they tend to have good grades.
They are good at teamwork and this type is common among athletes. In work, they pay attention to details and can achieve high results.
However, they sometimes seek perfection too much, so it’s important to relax sometimes.
People of this type have a strong ability to support those around them. But don’t forget to take care of yourself too. By living a balanced life, the goodness of ISFJ-A should shine even brighter.
The tendencies introduced are originally from Big Five and HEXACO research, so if you want to know your personality more scientifically than MBTI or 16personalities, please try this HEXACO personality test.
Writer & Supervisor: Eisuke Tokiwa
Personality Psychology Researcher / CEO, SUNBLAZE Inc.
As a child he experienced poverty, domestic abuse, bullying, truancy and dropping out of school — first-hand exposure to a range of social problems. He spent 10 years researching these issues and published Encyclopedia of Villains through Jiyukokuminsha. Since then he has independently researched the determinants of social problems and antisocial behavior (work, education, health, personality, genetics, region, etc.) and has published 2 peer-reviewed journal articles (Frontiers in Psychology, IEEE Access). His goal is to predict the occurrence of social problems. Spiky profile (WAIS-IV).
Expertise: Personality Psychology / Big Five / HEXACO / MBTI / Prediction of Social Problems
Researcher profiles: ORCID / Google Scholar / ResearchGate
Social & Books: X (@etokiwa999) / note / Amazon Author Page