1 Creators (SP) All SPs = 33% 
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ISTP - Craftsman, Mechanic = 6.4%- Personality- ISTP Ready to Try Anything Once
Personality Link-Strong(Some) : Negativistic ( Antisocial ) 
Gender Traits : > men- Total:6% Male:8.5% Female:3.5% 
[Repressed] Function : Extroverted Feeling- ISTP
1. Dominant : Introverted Thinking (Ti)
2. Auxiliary :Extroverted Sensing (Se)
3. Puerile : Introverted iNtuition (Ni)
4. Repressed : Extroverted Feeling (Fe)
Jungian sibling : INTP (shared Ti dominance)
KeirseyTemperament : SP (along with ESTP, ISFP, & ESFP)
M-Jung-Keirsey-E's Model : ESTJ or ENTJ;ESFJ;ESTJ

ISTP [(08)04M-08A-11F] %=T07 F04 M09 SP33 {Negativistic (Antisocial)} 
[Behind the Scenes (IP Phlegmatic)-Peaceful Observer {meek,submissive introverts,live to please others}] 
(SP) I-Influencing=33% Creators} (Craftsman, mechanic)=[Ready to Try Anything Once] Analyzer Operator + Improviser-Artisan 
SFP-STP I-Realist Constructive-(ISTP/ESTP,Ti/Se) 
ISTP-ISFP Nature lovers,seek quiet outdoors merge 

Repress Extroverted Feeling function-find self unintentionally offensive. 
Tolerant,flexible,quiet observers until problem appears-then act quickly find workable solutions.Analyze what makes things work,readily get thru large amounts data to isolate core of practical problems.Interested in cause & effect.organize facts using logical principles.value efficiency. quiet,serious,independent,super observant but keep most reactions-thoughts-opinions to self.
When do speak-trend literal,matter-of-fact,honest,avoid small talk.People see as totally calm & even-tempered,even families & closest friends rarely know what they’re feeling. When they do speak minds- truthful to point of bluntness.baffled why people take offense-otherwise react emotionally,may sometimes think relationships too complex-confusing. naturally private.avoid big social gatherings,rather spend time alone-good friend.busy with particular interests.enjoy outdoors,physical activities,adventures with certain element risk.approach problems curiosity-logic.people often say great with hands.easy-going,casual people,don’t like lot rules,structure,restrictions on freedom. like to explore.have fun,follow impulses-Not live anyone else’s expectations-standards.prize own independence.don’t try impose self-beliefs on others.amazingly adaptive,able to turn on a dime,often have trouble making decisions-followthru projects.Some distraction-forget commitments.luckily-so resourceful often able improvise.

 ISTP - Realist 


 ISTP - The Mechanic 

Quiet and reserved, interested in how and why things work. Excellent skills with mechanical 
things. Risk-takers who they live for the moment. Usually interested in and talented at extreme 
sports. Uncomplicated in their desires. Loyal to their peers and to their internal value systems, 
but not overly concerned with respecting laws and rules if they get in the way of getting 
something done. Detached and analytical, they excel at finding solutions to practical problems. 

 
ISTPs are on the move. They like adventure, and often have an unusual way of doing 
things. This combination of inward logical thinking with a final decision at the last 
minute can be frustrating to those around them. They can prefer to work alone, executing 
their plan without consideration for involving the others in the group. 

ISTP 
Skilled trades 
Technical fields 
Agriculture 
Law Enforcement 
Military 


 ISTP 
Introverted Sensing Thinking Perceiving 
Description 
ISTPs are independent, adaptable, and objective. Their primary function is Introverted Thinking which 
allows them to analyze data and notice inconsistencies. In turn, their auxiliary function is Extraverted 
Sensing which makes them hands-on people who process data through their five senses. The ISTP enjoys 
working with their hands while evaluating a complex system. They enjoy deconstructing and 
reconstructing a system to better learn how it works. 
An ISTP is always looking for ways to be involved in their work and thrive in all-or-nothing situations. They 
work well in crises because they are quick to make decisions and to put their thoughts into action. 
ISTPs are spontaneous and prefer being able to react to the current situation than follow a plan. The ISTP 
works best in an environment where they are able to work freely and view rules as a hindrance to their 
spontaneity (“Portrait of an ISTP”). 
While they have little respect for rules imposed upon them, ISTPs strictly follow their own set of internal 
rules. If someone violates the principles that the ISTP holds in high regard, they become hostile and 
stubborn. They can be inconsiderate of others’ boundaries at times, but they are willing to accept 
people encroaching on their personal boundaries in the same fashion (Heiss “ISTP”). 
Careers 
. Law Enforcement 
. Detective Work 
. Forensic Pathologist 
. Computer Programmer 
. System Analyst 
. Engineer 
. Carpenter 
. Mechanic 
. Pilot 
. Athlete 
. Entrepreneur 
. Designer 

Key Elements to Working with this Type 

. Respect the personal beliefs of an ISTP. 
. The ISTP will disregard rules set for them and work best without physical or mental constraints. 
. ISTPs are extremely spontaneous. 
. They are doers, not thinkers: ISTPs prefer hands-on projects. 

ISTP - Realist 
Tolerant and flexible, quiet observers until a problem appears, then act quickly to find workable 
solutions. Analyze what makes things work and readily get through large amounts of data to 
isolate the core of practical problems. Interested in cause and effect, organize facts using logical 
principles, value efficiency.