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Personality Types

ISTJ Personality Type — The Examiner

ISTJ Examiners have a keen sense of right and wrong. They are responsible, dependable and loyal. As gifted administrators, they value thoroughness, integrity and honesty. They are practical and believe that work comes before play. ISTJs always have a plan and are prepared.

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The ISTJ personality type is of the SJ Protector temperament.

ISTJ Preferences

Preferences: Introversion (I), Sensing (S), Thinking (T), Judging (J)

ISTJs direct their energy inward. They are private and are energized by spending time alone. They are deliberate and independent. ISTJs usually have a small circle of friends. They are often the type that thinks before they speak. With a preference for Sensing, ISTJs process information through their senses. They are concrete and realistic people. They give attention to detail and live in the present.

ISTJs are Thinkers and make decisions with their head. They can be impersonal and firm with others. They are driven by thought and are objective. ISTJs are emotionally controlled. ISTJs are structured, scheduled and organized. They seek closure. Completing tasks brings them great satisfaction.

Describing an ISTJ

ISTJs can often be described using these words.
  • Dependable
  • Hard working
  • Dutiful
  • Private
  • Thorough
  • Decisive
  • Efficient
  • Punctual
  • Traditional
  • Humorous
  • Practical
  • Deliberate
  • Responsible
  • Honest
  • Rule following
  • Loyal
  • Sacrificial
  • Devoted
  • Service-oriented
  • Scrupulous
  • Rigid
  • Committed

ISTJs and Relationships

ISTJs define caring in terms of loyalty and responsibility. They are dependable and can be counted on. They prefer to observe when they are part of a group. They do not enjoy being the center of attention. On the contrary, ISTJs find pleasure in solitude. Although they may be perceived as rigid, ISTJs have a great sense of humor. They often have a reputation of being trustworthy.

ISTJs and Work / Career

ISTJs take their responsibilities very seriously. They work well with a team but often prefer to work alone. They require structure and clear direction. They avoid stress and confrontation. ISTJs are dutiful and will often avoid taking a break until the work is done.

ISTJ Career Matches

The following careers are possible matches for individuals with the ISTJ personality.
  • Accountant
  • Military Officer
  • Police Officer
  • Administrator
  • Auditor
  • Medical Doctor
  • Dentist
  • Financial Officer
  • Detective
  • Scientist
  • Math Teacher
  • Lawyer/Attorney
  • Judge
  • Manager
  • Computer Programmer
  • Computer Specialist
  • Librarian
  • Executive
  • Steelworker
  • Electrician
  • Mechanical Engineer
  • Systems Analyst
  • Technical Specialist
  • Technician
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ISTJs and Learning / School

ISTJs often do well in school. Teachers appreciate their attention to detail and hard work. They do well with subjects that require precision and deliberate observation. They are concrete learners that want to learn practical skills. They are usually not energized by theoretical discussions. Many ISTJs enjoy reading.

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ISTJ Strengths and Weaknesses

There are strength and weaknesses that ISTJs are more likely to possess than others.

Typical ISTJ Strengths

  • Good at listening
  • Committed and loyal
  • Excellent with money management
  • Precise and detailed
  • Handles criticism well

Possible ISTJ Weaknesses

  • Can become too rigid
  • Not generous with praise
  • Desires to always be right
  • Not in tune with feelings
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Famous ISTJs

The following famous people and fictional characters can be classified as ISTJs with reasonable accuracy.

Famous ISTJ People

  • George Washington
    American President
  • Andrew Johnson
    American President
  • Benjamin Harrison
    American President
  • Herbert Hoover
    American President
  • George H. W. Bush
    American President
  • Thomas
    Apostle of Jesus
  • Jackie Joyner-Kersee
    Athlete (Heptathlon)
  • Evander Holyfield
  • Henry Ford
  • Jack Webb
    Actor, Producer
  • Condoleeza Rice
    U.S. Secretary of State
  • Kirk Douglas
  • Warren Buffet
    Investor, Businessman
  • Harry Truman
    American President
  • Queen Elizabeth II
    Queen of England
  • Rosalynn Carter
    U.S. First Lady
  • Duke of Wellington
    British Prime Minister
  • Anthony Hopkins
  • Gary Sinise

Fictional ISTJ Characters

  • Joe Friday
  • Eeyore
    Winnie the Pooh
  • Fred Mertz
    I Love Lucy
  • Puddleglum
    Chronicles of Narnia
  • Cliff Clavin
  • Dallas
  • Bruce Wayne
    Batman Begins
  • Jet Black
    Cowboy Bebop
  • Gen. Yevgraf Zhivago
    Doctor Zhivago
  • Frankie Dunn
    Million Dollar Baby
  • Darth Vader
    Star Wars
  • Evelyn Cross Mulwray


ISTJ Examiners are service-oriented. They strive to help others in whatever role they play. They take responsibility seriously and honor their commitments. They fulfill duties without seeking recognition. Their greatest contribution is their ability to work hard and to make sacrifices to keep society running smoothly.

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