Sloth Personality Test

ISTP: Lone Wolf Technician



ISTPs tend to be quiet and absorbed in their work.

As a result, they tend to lack communication with those around them.

And they can become isolated without even knowing it…

So, let’s think about how that ISTPs can lead more fulfilling lives.



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The Type that Thinks and Acts on Their Own


ISTP, interpreted according to Jungian theory, probably refers to the following psychological types.

Introverted sensation type

The superior function is sensation.

The auxiliary functions are thinking and feeling,

but thinking is stronger than feeling.


Below is a diagram that illustrates the above.

In this type, intuition is the inferior function.

Incidentally, Jungian theory explains that the other three functions are introverted when the superior function is extroverted.

And conversely, when the superior function is introverted, the other three are extroverted.

(In the MBTI, only the interpretation of introversion follows this rule.)


However, the MBTI interprets it differently from the above Jungian theory, shown in the table below.

Dominant Introverted Thinking
Auxiliary Extroverted Sensing
Tertiary Extroverted Intuition
Inferior Extroverted Feeling


I describe personality types on this site with four letters, “just like the MBTI.

However, I follow Jungian theory as much as possible when explaining personality theories.

This is because those who have studied the MBTI can broaden (or change?) their thinking by learning the original and correct Jungian theory.


Looking at the MBTI theory as a whole, it is relatively similar to Jungian theory in the case of extroverts.

But it deviates considerably from Jungian theory in the case of introverts.



Let’s start with the ISTP’s thinking function.


Since ISTPs are introverts, their thinking function is also considered to work introvertedly.

This “thinking that works introvertedly” is that they cannot help but think thoroughly about the meaning and reasons for things.


But they do not keep thinking forever.

Once they conclude, they try to do it and confirm whether it is correct.

These personality tendencies are probably due to the development of sensation.


But ISTPs are introverts, so whatever they do, they don’t involve the people around them.

So they tend to give people around them this puzzling impression.

“What in the world is that person doing all by themselves?”



After reading the ESTJ description on this page, you may feel it does not apply to you.

In that case, the result of the test can be wrong.


If so, please read the following article.

Here is the most important thing to know about personality tests.

Taking personality tests can be harmful!



Unfamiliar with the Future, Ideals, and Emotions of Others


ISTPs have excellent powers of observation.

But their powers of observation are used for things relatively close to them.


They can observe the details of things within their reach.

Still, they need to improve at observing things far away, such as social events and international issues.


They are also interested in “today” and “tomorrow” regarding time.

But not interested in imagining the distant future or discussing dreams and ideals.



Therefore, don’t ask ISTPs questions like the following.

What do you think the world will be like in 10 years?”

What are your dreams for the future?

What are your ideals?”

Because the answer they will give you is…

“I’ve never thought about that.”


Another thing that ISTPs aren’t good at is caring for other people’s feelings.

The feelings of others are another “far away” area for ISTPs.


ISTPs also don’t seem to want others to understand their feelings


A simple way to describe ISTPs would be as follows.

“A personality only interested in things that are before them at the moment and that they can touch in person.”



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Lack of Communication with Surroundings


ISTPs tend to have difficulty opening up to others.

They don’t show their innermost feelings.


So even if they have a problem, they don’t talk to others about it.

They also don’t share their ideas with others.


This is ultimately due to their introverted nature.

But because of this,

ISTPs can put all their energy into their work.


In other words, they have the following idea.

“I don’t want to waste my energy on unnecessary interactions with the outside world while I’m absorbed in my work.


This tendency to act alone can also be seen in their favorite sports and other activities.

Individual sports are better suited for ISTPs than team sports.



Now, this kind of “quietly working alone” is the fundamental stance of this type of person.

Seeing this, people around them may feel as follows.

“He’s kind of a quiet person.”

“He is unsociable.”

“He’s difficult to approach.”

“I don’t know what he is thinking.”


However, they have no bad intentions.

They are just doing their job as hard as they can.

And they always do their job perfectly.

In that sense, this type of person can be called

“A lone wolf at work.”


Even though wolf, this type of person is rather quiet



How ISTPs Can Further Improve Their Capabilities


ISTPs are realists and live down-to-earth life.

But they run the risk of reducing their potential if they get too attached to their way of thinking.


So, there are some “things to keep in mind” for ISTPs to further improve their abilities.

This is described in detail in the following article.



ISTPs devote themselves to their own world, which affects their relationships.

Some of them may have difficulty finding a partner.

How to overcome these ISTP-specific problems is described in this article.



Now, at first glance, ISTPs are similar in type to ESTPs.

However, there are some differences between them.


ESTPs, even if they are working alone, are very loud and active, so people around them can see how their work is progressing.


On the other hand, ISTPs concentrate on their work in silence, so the people around them don’t know how far they have progressed.


This is the difference between an extroverted ESTP and an introverted ISTP.

If you are an ISTP, just understanding these things will help you choose a job.


You can read more about ISTP jobs in this article.



Some ISTP women are not good at romance.

So the following article discusses love for ISTP women.



Summary of ISTP type


Many ISTPs are very professional but not interested in  teamwork.

This is both a strength and a weakness of this type.


Let me conclude with a summary of the nature of the ISTP.

Think, act, and confirm everything alone.

Always think and act alone.

A personality that is difficult for others to understand.

Difficulty in thinking about the future and ideals.

Not being attentive to others.



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