ISTJs are the behind-the-scenes workers who make things happen.

Their sense of duty and loyalty means that they will rarely be happy in the front, preferring to be in the engine room.

ISTJs are the sensible, prefect type of characters, who want to get it right and “do good.” Their value to the team is protectionfrom mistakes, from omissions, from self-delusion, and from going off-track.

ISTJs love seeing things come to fruition. Ideas, complexity, and imagination are of value only if they lead to a practical end result.

ISTJs need to be clear on what is expected so that they can plan and work with consistent and steady energy toward completion.

Opinions are slowly arrived at and, consequently, will be well thought out, tried, and tested. ISTJs are not prone to bursts of emotion, flying by the seat of their pants, nor will they thrive in a chaotic environmentunless they have the opportunity to formalize it!

Logical, detached, and detailed, ISTJs pride themselves on their store of data and knowledge, all arrived at with clinical procedure and experience.

They take great care not to get it wrong, and they like everyone to take responsibility for their actionsand their mistakes.

Serious-minded, individualistic, and thorough, ISTJs may focus so much on the task that they forget the needs of othersincluding themselves.

ISTJs like to plan, schedule, and drive through to completion in a logical, linear sequence. Any deviation from the plan would be questioned and may take some convincing of its merits.



• Serious and quiet
• Action-oriented
• Responsible and trustworthy
• A “no-nonsense” person

Areas of Growth

• Consider other possible solutions.
• Be open to the “big picture.”
• Make time for fun.
• Listen more to those around you.


The basic attitude of ISTJs is things are what they are and little can be done to change them.

ISTJs tend to be quiet, very serious, and concerned about procedures and rules, especially when others are not doing their duty.


• Organizing facts and details to accomplish a goal
• A quiet workspace with few interactions
• Clear and stable structures
• Being in control of work schedule


• Deadlines
• Being asked to change something with no rational reason
• Requirement to do things in an inefficient way
• Being asked to “wing it”

To function at their best

They need organization and structure in which to work. Projects to complete and tasks to accomplish. Opportunities to organize and preserve data or materials. An understanding of their role.


ISTJs are consistent and can be easily frustrated by the inconsistencies of others, especially when these others don’t adhere to their commitments or agreements.

They do, however, usually keep their feelings to themselves unless they are asked. But when asked, they are unlikely to mince words, facts, truth, telling it like it is, which they believe will always win over tactfulness.

Detached and factual, ISTJs often find it difficult to deal with emotions, as they see these as irrational and illogical.

When others display emotions, they have to translate the emotion into factual language that they can understand.

Deep and private, ISTJs will tend to keep their own feelings to themselves and until they have the measure of people will be unlikely to proactively share their feelings.

Too much interaction sucks their energies. ISTJs like people to stick to agreements and commitments and may not understand that this is human nature, not human deficiency, as they themselves take such commitments incredibly seriously.


ISTJ at work

ISTJs value protection at work—from mistakes, from omissions, from self-delusion, and from going off track.

In a team situation, ISTJs will bring order, clarity, organization, and planning.

Although introverted and so not the most vocal member of the team, ISTJs will seek to make sure the team is best placed to move toward a “known” conclusion in a thorough, planned, and detailed way, without deviation from the plan.

Consummate planners, ISTJs love seeing things come to fruition.

Ideas, complexity, and imagination are of value only if they lead to a practical end result.

ISTJs will be great at spotting flaws in arguments, missed details, and preventing the team from haring off in the wrong direction.

They seem to have a built-in immunity from getting excited, so they will bring a strong sense of reality and factualness to the team.

This may not be inspiring, but it will add so much value in the longer term, as ensuring agreements are adhered to and things progress according to the plan.

Sure, they may not be the one coming up with the ideas or keeping the momentum going, but their role is primarily protector, and in that, they will be invaluable to the team.

They excel at analyzing problems and evaluating ideas and suggestions, so the team will be better placed to make balanced decisions.

In a team environment, ISTJs will be unemotional and factual. They may not be motivational or strongly vocal, but they are superb at analyzing problems, evaluating ideas and suggestions, and weighing the pros and cons.

Teams will be better placed to make balanced decisions with an ISTJ there.

ISTJs bring a strong sense of planning, agreeing objectives, and ability to work steadily toward closure.

They will excel at ensuring everyone is clear on what is expected—everyone will know what the plan is and their part in it—and in ensuring that the plan is enacted. They are more task- than people-focused.


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