Introversion
More drawn to inner reflection than outward interaction. This does not mean a person lacks social skills.
Opposite preference: Extraversion (E)Jung personality types
ISTPpersonality type
A reserved, practical approach to understanding how things work.
ISTP stands for Introversion, Sensing, Thinking and Perceiving. In this framework, it describes a preference for reflection, concrete experience, logical evaluation and keeping options open.
SimilarMinds offers a 16-type test based on Jung’s ideas and the Myers–Briggs implementation—an independent MBTI analog.
48 questions · Free results · Optional saving to your profile
What does ISTP mean?
Preferences describe an approach—not an ability or a rule.
Sensing
More drawn to concrete information and direct experience than patterns and possibilities.
Opposite preference: Intuition (N)Thinking
More inclined to weigh logical consistency when deciding. Feeling emphasizes values and effects on people.
Opposite preference: Feeling (F)Perceiving
More inclined to leave room for new information than settle early on an organized plan.
Opposite preference: Judging (J)From the SimilarMinds response archive
What distinguished the ISTP group?
Six selected item comparisons: people classified as ISTP versus the other 15 Jung types combined.
These are historical questionnaire averages on a stored 0–4 answer scale. They are not percentages or population rankings.
ISTP averageOther types average
“I don't reveal much about myself to others.”
ISTP
3.07
Others
2.13
Difference: +0.94 scale points
ISTP: 147 responses · Other types: 2,864 responses
“I don't talk a lot.”
ISTP
2.47
Others
1.64
Difference: +0.83 scale points
ISTP: 148 responses · Other types: 2,861 responses
“I make decisions based on facts, not feelings.”
ISTP
2.78
Others
2.12
Difference: +0.66 scale points
ISTP: 160 responses · Other types: 2,845 responses
“I don't like to get dressed up.”
ISTP
2.38
Others
1.60
Difference: +0.78 scale points
ISTP: 137 responses · Other types: 2,872 responses
“I reason logically.”
ISTP
3.29
Others
2.81
Difference: +0.47 scale points
ISTP: 164 responses · Other types: 2,848 responses
“I don't plan anything very far in advance.”
ISTP
2.61
Others
2.01
Difference: +0.60 scale points
ISTP: 135 responses · Other types: 2,869 responses
How these comparisons were calculated
Source: the legacy SimilarMinds poll/mbti archive, active scaled-question results, retrieved November 9, 2026. Groups use the full four-letter classification; ISTP is compared with all other valid four-letter types, excluding ISTP. Genders and questionnaire versions are pooled.
Each mean is the response-count-weighted sum of stored answer values divided by that item’s response count. Counts vary by item and are not a count of unique people across the archive. The displayed difference is the ISTP mean minus the pooled comparison mean.
Examples were selected for readable coverage of different tendencies from items with positive standardized group differences. These are not the six largest differences, a neutral-mood screen, or an independent validation: some questions may have contributed to the type assignment. Self-selection, repeated submissions and questionnaire changes limit generalization.
Minimum counts: 100 responses for this type and 500 across other types. The exact values used in the charts appear below.
| Archive item | ISTP mean (n) | Other types mean (n) | Difference |
|---|---|---|---|
| #140: I don't reveal much about myself to others. | 3.07 (147) | 2.13 (2,864) | +0.94 |
| #934: I don't talk a lot. | 2.47 (148) | 1.64 (2,861) | +0.83 |
| #1591: I make decisions based on facts, not feelings. | 2.78 (160) | 2.12 (2,845) | +0.66 |
| #914: I don't like to get dressed up. | 2.38 (137) | 1.60 (2,872) | +0.78 |
| #1787: I reason logically. | 3.29 (164) | 2.81 (2,848) | +0.47 |
| #925: I don't plan anything very far in advance. | 2.61 (135) | 2.01 (2,869) | +0.60 |
For the meaning of the letters, read the Jung preference and scoring guide. The Big Five and Jung comparison looks at overlap between the two systems.
SimilarMinds questionnaire findings
The ISTP personality profile
Personality items associated with higher ISTP scores.
In the original SimilarMinds analysis, people who scored higher on ISTP also scored higher than the average on the personality items below.
These are group-level associations, not a checklist every ISTP must match. Some items concern mood, self-image or social experiences; the full list preserves the original findings rather than defining requirements of the type.
PrivateIndependentDislikes attentionLoner tendenciesNot complimentary
All original profile items
- hidden
- private
- has trouble describing feelings
- not very affectionate
- loner tendencies
- lower energy
- disorganized
- messy
- avoidant
- unemotional
- dislikes attention
- independent
- not complimentary
How that might show up
Use these possibilities to reflect on your own experience.
Learning from the actual problem
You may prefer to inspect a situation or try something directly before discussing a broad explanation. Sharing what you observed can make practical knowledge easier to pass on.
Consider: Which observation changed your understanding?
Keeping room to respond
You might want enough independence to change your approach as circumstances unfold. Naming the constraints you accept can reassure others without planning every detail.
Consider: What needs agreement, and what can be left to judgment?
Showing the reasoning
A practical answer can feel complete once it works. Explaining why you chose it helps other people maintain it, question it or recognize when it needs changing.
Consider: Could someone else repeat the result from your explanation?
ISTP compared with nearby types
Each of these codes differs by one preference.
P ↔ J
ISTP vs ISTJ ↗
Keeping options open to revision versus moving toward a settled plan.
Explore ISTJT ↔ FISTP vs ISFP ↗
Giving more weight to impersonal reasoning versus personal values when making a decision.
Explore ISFPI ↔ EISTP vs ESTP ↗
Reflecting inwardly versus engaging outwardly as the more natural starting point.
Explore ESTPA narrow score difference deserves less emphasis than a clear preference. Read the paired scores alongside the letters.
Work & learning
Look for conditions that suit you
Rather than choosing a career from a type label, ask whether a role offers the kind of work you enjoy:
- Time for uninterrupted individual work before discussing a result.
- Concrete information, practical examples and a chance to try the work directly.
- Clear reasons for decisions and a way to evaluate whether an approach works.
- Enough flexibility to adapt the approach as you learn.
Your interests, experience and actual skills are more specific than four letters.
Relationships & communication
Understanding a difference helps
Practical help may express care even when you do not say much about feelings. Making that intention explicit, and asking how the other person prefers to receive support, can reduce misunderstandings.
For a more detailed comparison, use actual trait scores. The Distinct Traits feature lets two people compare their results side by side.
Explore personality compatibility →From the original ISTP page
Historical career associations
The original favored and disfavored lists are preserved below. They are reported associations, not recommendations or measures of job suitability.
Favored Careers
aerospace engineer, technician, computer scientist, software engineer, software developer
Show the complete original list
- aerospace engineer
- technician
- computer scientist
- software engineer
- software developer
- scientist
- electrician
- engineer
- mathematician
- mechanic
- systems analyst
- data analyst
- video game designer
Disfavored Careers
artist, fashion designer, theater director, poet, dancer
Show the complete original list
- artist
- fashion designer
- theater director
- poet
- dancer
- actor
- singer
- english teacher
- art teacher
- florist
- art therapist
- school teacher
- music journalist
Common questions about ISTP
Is this the official MBTI assessment?
No. SimilarMinds is an independent Jung-style 16-type test, not the official MBTI assessment. It uses the familiar four-letter preference framework. Read about the SimilarMinds Jung system.
What if one pair is almost tied?
Read the scores rather than treating the letters as equally strong. A Thinking score of 51% and Feeling score of 49% is a much narrower difference than 80% versus 20%. A small change in answers could change the letter in a close pair.
Does ISTP tell me my cognitive functions?
A four-letter result by itself does not establish a measured function ordering. SimilarMinds has a separate Cognitive Functions test that asks about introverted and extraverted forms of the functions.
Does being ISTP determine compatibility?
The letters do not measure whether a particular relationship will work. Comparing actual trait scores gives more detail about where two people resemble one another and where they differ; communication, values and circumstances also matter.
Can I save and compare my results?
You can save your Jung result to your SimilarMinds profile alongside other tests. Public sharing is optional. For pairwise similarity and compatibility tools, take and save the Distinct Traits test.
See the scores behind your type
Take the test, then explore each preference in your own results.
Framework background: The Myers & Briggs Foundation’s preference guide. SimilarMinds implementation: Jung personality system. The everyday examples on this page are interpretations of the framework, not new research findings.