ISTJ | MBTI Personality Type
Information about the MBTI personality type ISTJ. Conscious cognitive functions, shadow cognitive functions, brain research, similar types, sex and population ratio and ISTJ memes, videos and more.
Table of Contents
Known As
The Logistician
The Inspector
1 Cognitive Functions
Conscious
Unconscious
Opposing: Se
Critic: Ti
Trickster: Fe
Devil: Ni
What are the cognitive functions for ISTJ and what do they mean?
The Myers-Briggs Type Indicator (MBTI) is a widely used personality assessment tool basing it’s conscious cognitive functions on Carl Jung's theories of psychological types. The original test was developed by Katharine Cook Briggs and her daughter Isabel Briggs Myers during the mid-20th century.
The MBTI framework is built upon four pairs of dichotomies, resulting in 16 possible personality types. Extraversion (E) vs. Introversion (I), Sensing (S) vs. iNtuition (N), Thinking (T) vs. Feeling (F), and Judging (J) vs. Perceiving (P).
Later on, other psychologists and researchers have added to the original Carl Jung framework alongside Katharine Cook Briggs and Isabel Briggs Myers, such as the psychologist John Beebe and author Linda Berens. Beebe and Berens have developed what is known as the shadow cognitive functions which are the parts of one’s personality which often arise under stress or during times of personal growth.
For pages discussing the scientific validity of MBTI, it’s comparison to the big 5 and other psychology tests, checkout this page: About.
2 Type Group
Sentinels
The Sentinels group is made up of Introverted Sensing dominant or auxiliary users.
They are ESTJ, ISTJ, ESFJ and ISFJ.
This is a group of people who want to help organise the world.
For more information about the Sentinels, checkout their article:
3 Similar types
Si dominant: ISTJ vs ISFJ
Te auxiliary: ISTJ vs INTJ
4 Statistics
ISTJ is 17.6% of the population with a sex ratio of Male: 58% and Female: 42%.
In the overall population, ISTJ is 20.9% of men and 14.5% of women.
5 Brain Research
An ISTJ’s brain, as researched in Dario Nardi’s university research lab, shows:
A full breakdown of the regions can be seen here:
6 Similar but different
ESTP: Se-Ti-Fe-Ni
ISTJ likes what ESTP likes in the same amounts but for different reasons.
(Si-Te-Fi-Ne vs Se-Ti-Fe-Ni).
ENFP: Ne-Fi-Te-Si
ISTJ appreciates ENFP for wanting to do what they naturally want to avoid doing.
(3rd-4th tier weaknesses Si-Te-Fi-Ne vs Ne-Fi-Te-Si).
INFJ: Ni-Fe-Ti-Se
ISTJ appreciates INFJ for their skills being the total polar opposite to theirs and vice versa.
(7th-8th tier weaknesses Si-Te-Fi-Ne-Se-Ti-Fe-Ni vs Ni-Fe-Ti-Se-Ne-Fi-Te-Si).
7 Enneagram
Type 1, Type 5, Type 6
8 Memes
Group
Individual
Romance
9 Videos
Inside The Mind Of The ISTJ (+ playlist) by Love Who
Primary (Hero): Si
Auxiliary (Parent): Te
Tertiary (Child): Fi
Inferior: Ne
Those With A Sensing Dominant Function Explained by WeAreJungians and Joyce Meng
ISTJ and ISFJ : Ne Inferior (Extroverted Intuition) by Type Cast Heroes
Opposing: Se
Critic: Ti
Trickster: Fe
Devil: Ni
10 Bibliography
Love Who. October 24, 2022. "The 16 Personalities and their Common Mistypes." YouTube. Link (archive).
Storm, Susan. November 15, 2019. "How Rare Is Your Myers-Briggs® Personality Type?" Psychology Junkie. Link (archive).
James, Frank. September 13, 2021. "Is INFJ STILL the Rarest of the 16 Personalities? (NEW Statistics)." YouTube. Link (archive).
James, Frank. September 20, 2021. "What Are the Rarest 16 Personalities Types in Men vs Women?" YouTube. Link (archive).
Isabel Briggs Myers, Mary H. McCaulley, Naomi L. Quenk, and Allen L. Hammer. 2018. "MBTI® Manual for the Global Step I™ and Step II™ Assessments 4th Ed - PDF." The Myers-Briggs Company. Link (archive).
Isabel Briggs Myers, Mary H. McCaulley, Naomi L. Quenk, and Allen L. Hammer. 2018. "MBTI® Manual for the Global Step I™ and Step II™ Assessments 4th Ed - PDF." Library of Congress Catalog. Link (archive).
Nancy A. Schaubhut, Richard C. Thompson, Michael L. Morris, Justin J. Arneson. 2019. "Germany (German) Supplement to the MBTI® Manual for the Global Step I™ and Step II™ Assessments." The Myers-Briggs Company. Link (archive).
Isabel Briggs Myers, Mary H. McCaulley, Naomi L. Quenk, and Allen L. Hammer. 1998. "MBTI manual: a guide to the development and use of the Myers-Briggs Type Indicator 3rd ed." Open Library. Link (archive).
Isabel Briggs Myers, Mary H. McCaulley, Naomi L. Quenk, and Allen L. Hammer. 1998. "MBTI manual: a guide to the development and use of the Myers-Briggs Type Indicator 3rd ed." Internet Archive. Link (archive).
Nardi, Dario. January 1, 2011. "Neuroscience of Personality: Brain Savvy Insights for All Types of People." Goodreads. Link (archive).
Nardi, Dario. January 1, 2011. "Neuroscience of Personality: Brain Savvy Insights for All Types of People." PDF Room. Link (archive).
Personality Studies. January 31, 2016. "MBTI’s Highest Activity Regions on Electroencephalogram (EEG)." Link (archive).
5wings4birds. January 9, 2023. "Data from Neuroscience of Personality by Dr.Dario Nardi for those saying that MBTI is just like @str0l0gy . Very interesting!" Link (archive).
Love Who. November 10, 2024. "I Analysed EVERY Enneagram & 16 Personalities Combination." YouTube. Link.
How To Spot an ISTJ in 2 Minutes... by Love Who
Inside The Mind Of The ISTJ (+ playlist) by Love Who
The Sixteen Types: ISTJ by Michael Pierce
Revisiting the Types: ISTJ by Michael Pierce
ISTJ Personality Type in a Nutshell by It's Just Kevin
Day in the life of an ISTJ 🤣 by MBTI Humans
The 16 Personality Types - Best of ISTJ #1 by It's Just Kevin
3 Things ISTJs think is normal (but isn’t) by Joyce Meng
16 Personalities Through the Goggles of the ISTJ by dear Kristin
Primary (Hero): Si
ISTJ and ISFJ: Si Hero (Introverted Sensing) by Type Cast Heroes
Auxiliary (Parent): Te
Te (Extroverted Thinking) - How does it show up in your Cognitive Stack? by Personality Guy
INTJ and ISTJ: Te Parent (Extroverted Thinking) by Type Cast Heroes
Tertiary (Child): Fi
INTJ and ISTJ: Fi Child (Introverted Feeling) by Type Cast Heroes
Inferior: Ne
The 16 Personalities' 4th Function Appearing as the Angel on Their Shoulder by dear Kristin
Those With A Sensing Dominant Function Explained by WeAreJungians and Joyce Meng
ISTJ and ISFJ : Ne Inferior (Extroverted Intuition) by Type Cast Heroes
Opposing: Se
Critic: Ti
Trickster: Fe
How Does Your Trickster Function Work? | EgoHackers by EgoHackers
Devil: Ni