Personality Type: ISTJ [Inspector, Investigator, Trustee, Realist]

Personality Type: ISTJ [Inspector, Investigator, Trustee, Realist]

INDORAMAL.COM/EN - People with ISTJ personality types account for around 10-14% of the general population, which is very good because it means you are not alone. But when it comes to men, ISTJ is the most common type of personality. So whether you are an ISTJ or a woman who wants to understand men better, read on!

Before we begin, it might be worthwhile to take a personality test to find out your personality type. Although you may find many such tests on the Internet, not all of them are scientifically validated. If you are serious about finding out your personality type, you might want to consider taking the test offered by

One thing you should know that ISTJ has several other names. These names are intended to be more descriptive than just a four-letter combo, so if you happen to find one of these names, chances are you read about ISTJ:

  • Responsible Realist (official MBTI website)
  • Inspector (David Keirsey, "Please Understand Me II")
  • Trustee (David Keirsey, "Please Understand Me")
  • Inspector Planner (Linda Berens)
  • Super Dependable (Alan Brownsword)
  • Investigator (Jonathan P. Niednagel)
  • The organizer of Nature (Otto Kroeger, "Type Talk at Work")

Some online sources use their descriptive names such as Logistics Expert, Examiner, Pragmatic, and Task Filler.

In terms of the four classic personality types, ISTJ is pure Melancholic.

What does ISTJ stand for?

According to Otto Kroeger, author of "The Type Talk", ISTJ only "does what must be done", and looking at their four faculties, this is not surprising. The meaning of ISTJ is introverted (I), sensing (S), thinking (T), judging (J).

  • Being introverted means that you prefer to focus internally and get energy by spending time alone.
  • Being sense means that you prefer to deal with concrete facts rather than abstract ideas and concepts.
  • Being thinking means that you are a logical person; You tend to make decisions based on reason rather than emotions.
  • Being a judge means you prefer structure and organization rather than spontaneity.

ISTJ Personality Review

If for ENFJ it's all about empathy and goodness, for ENTJ it's about achievement, for INTP it's about creativity and innovation when it comes to ISTJ (Introverted Sensing-Thinking-Thinking-Thinking-Judging type) it's all about responsibility. They do what needs to be done, including behaving outside the character if the situation requires it. David Keirsey, author of "Please Understand Me II", said about ISTJ:

They base their self-image on being seen as someone who is reliable, generous, and respectable.

Reliable, generous, and respectable - if you want to truly understand ISTJ, you must remember these three words. Almost everything that ISTJ does and says is the result of those who want to possess these three qualities. This is how they want to be seen by others and this is how they want to feel about themselves.

Systematic and hard-working ISTJs respect their commitments while respecting existing structures and following the hierarchy. They will get the right thing to the right place at the right time. Their ability to track facts and details is extraordinary.

ISTJ is not an attention seeker. In general, they prefer comfort over style, but if they have to choose a style, it will be something classic. Although ISTJ did not become fashionable, they seemed to be put together at a certain time, and their clothes were always in harmony and color-coordinated. Looking good 24/7 requires a lot of effort and attention to detail, but ISTJ has all the right qualities to do that. What separates ISTJ from INTJ is the appearance of ISTJ that is neater and pay more attention to the rules.

ISTJ does not like fantasy, both clothing, and interior. They don't like flashy objects; their home, like their clothes, is usually simple, neat, and orderly. ISTJ avoids luxury - price, and durability are their main considerations. Even when they can afford it, they will not buy anything ultra-modern and would rather go for something old-fashioned. Unlike some other types, ISTJ does not want to be original; anything unique or exotic makes them feel uncomfortable.

Despite their introversion, ISTJ tends to participate in community service projects, especially those that promote traditional values. Unlike some other types, ISTJ believes in the importance of social events such as engagement parties, weddings, anniversaries, and funerals and will be present without fail.

ISTJs are not risk-takers and will not take risks with their own or other people's money, which also means that they tend to work alone. However, ISTJ is the third highest-earning personality type after ESTJ and ENTJ. ISTJs earn far less than ESTJ or ENTJ, but on the other hand, they are still ahead of all other personality types.

From a young age, ISTJ trained themselves to finish what they started. From a career perspective, they tend to choose large and stable organizations, because that implies their financial security and stability. Because ISTJs are stable, persistent, and reliable, they are often given positions of responsibility. More than most other types, ISTJ tends to dedicate their entire work life to one organization. While providing security and financial stability, they will not leave, even if they are not fully satisfied with their work.

Most of the time, ISTJ operates in information-gathering mode. They constantly filter out the objective, concrete and pragmatic data - something that can be translated into immediate action. Because of this natural habit, ISTJ expects the same behavior from everyone - both at home and work, ISTJ is impatient and demanding.

ISTJ has rules for everything and expects it to be followed without question. Their home must be organized, their food must be served "properly" and according to schedule, their children must get good grades, do homework and sleep on time, their partners must look a certain way and do the housework assigned to them . ...

Having such an inflexible and demanding partner might sound like a nightmare but more often than not, ISTJ is a good and reliable life partner.

ISTJ in Dating and Love Relationships

ISTJ is the kind of life partner that many of us want to have. Just as they honor their other commitments, they honor marriage contracts. If you want loyal and committed partners - partners who will be a source of strength - look for ISTJ.

ISTJs like tradition and, when it comes to romantic relationships, they behave according to what is expected of them at each stage of a particular relationship. When they are in the courtship stage, they will give gifts and flowers. When they want to apply, they will get a ring. When they are ready to settle, they will provide a complete home. And yes, you will have a real marriage too!

An ISTJ man sees himself as the head of a family and takes responsibility for protecting and providing for his loved ones. An ISTJ woman is a steady and reliable wife who does things "right". When you get married to ISTJ, the bill is paid, the house is maintained, the food is ready. The disadvantage of marrying them is that they will expect you to make as much effort as they do. You will have work to do and work to do, and everything must be completed with a clear deadline.

If the relationship becomes bad, ISTJ will remain committed even if they will be better alone. They do it because of their sense of duty and unwillingness to get out of their comfort zone.

ISTJ Strengths and Weaknesses

Honesty and reliability are the main strengths of the personality type of the ISTJ. Their inability to express their feelings and their natural reluctance to take risks and/or something new is their main weakness.

Learning style

Because ISTJ does what needs to be done whether they like it or not, they make students diligent. They do not like the theory and enjoy the subject area with practical applications. Materials and instructions must be clear and accurate without errors. The study environment must be task-oriented with clear goals and deadlines.


ISTJ avoids professions that require abstract thought and spontaneity. They want to follow the rules and tend to lean towards professions that require them to achieve practical and measurable results such as accountants, surgeons, dentists, technicians, soldiers, etc. Otto Kroeger mentioned in his book "Type Talk" that ISTJ is the main US military configuration, from enlisted personnel to generals and admirals of four stars (based on a sample of more than ten thousand people).

ISTJ will complete the work on time by following established procedures, and they will not take shortcuts or experiments in their approaches. They need stability, organization, structure, rules, and clear tasks; after all these requirements are met, the INTJ will not leave. They are some of the most loyal employees out there.

ISTJ Leadership Style

ISTJs usually don't look for leadership positions but often find themselves promoted to this position thanks to their loyalty, commitment, and reliability. As a leader, ISTJ tends to rely on hierarchical and traditional approaches. They will respect those who follow the rules and are consistently reliable; in other words, to please ISTJ bosses, you must like them. Forget about innovation, forget about experimenting, don't force yourself to try to think of something clever and original - all you need to do is get the job done on time while following the rules on the tee.

Also, ISTJ bosses will become

  • fair to everyone,
  • clear about his hopes from others,
  • consistent and predictable.

Job Listing ISTJ

  • Accountant
  • Actuary
  • Administrator
  • Airplane pilot
  • The auditor
  • Bank employees
  • Bank Inspector
  • Bank tellers
  • Budget Analyst
  • Chief Information Officer
  • Civil Engineering
  • Compliance Inspector
  • Computer programmer
  • Coroner
  • Correctional Officer
  • Cost Estimator
  • Credit Analyst
  • Criminal law expert
  • Database Administrator
  • Dentist
  • Detective
  • Economist
  • Efficiency Analyst
  • Electrician
  • Engineer
  • Environmental Engineer
  • Housing Planner
  • Farmers or Breeders
  • Financial Officer
  • Flight Engineer
  • General Surgeon
  • Geologist
  • Government employees
  • Health & Safety Engineer
  • Health Care Administrator
  • Insurance Guarantor
  • Laboratory technician
  • Landscape Manager
  • Librarian
  • Manager
  • Mechanic
  • Medical doctor
  • Medical Technician
  • Military officer
  • Nuclear Engineer
  • Nurse Administrator
  • Office manager
  • Optician
  • Paralegal
  • Pharmacist
  • physical education
  • Assistant Physician
  • Police
  • Pollution Control
  • Power Plant Operators
  • Property manager
  • Purchasing agent
  • Real Estate Appraisers
  • School Administrator
  • School Broker
  • Headmaster
  • Statistician
  • Steelworker
  • Stock Brokers
  • Stockbroker
  • Surgeon
  • Watchdog
  • Teacher
  • Technical Instructor
  • Technical writer
  • Veterinarian

Random Facts About ISTJ

  • ISTJ has its brand of humor, but not everyone can accept their jokes because they are delivered in a very sarcastic way as if they were being serious.
  • The ISTJ may appear blunt, but in reality, all they want is, to be honest. They will not lie to save someone's feelings because they believe it does not serve a good purpose. They want to be honest and real, not fake.
  • Although ISTJs are not very emotionally expressive, they express their love by solving problems and meeting the practical needs of their loved ones.
  • ISTJs typically do not like change. They live by the principle: If it ain't broke, don't fix it.
  • ISTJs do things because they believe they need to be done; they don't need a pat on the back for anything they do.
  • ISTJ sticks to whatever they plan to do and continues to finish.
  • ISTJ is very sensitive to rejection signals from people they care about.
  • ISTJ is uncomfortable with expressing their emotions.

Famous ISTJ People

These famous people are most likely to belong to the ISTJ personality type:

  • George Washington
  • Johnny Carson
  • Henry Ford
  • Warren Buffet
  • Sigmund Freud
  • Xenophon

Fictional Character with ISTJ Personality Type

  • Mulan
  • Joe Friday from the Dragnet series
  • Stark from Game of Thrones
  • Katniss Everdeen from The Hunger Games

Keywords: mbti istj, istj personality, istj nature

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