Logical, detached and detailed and pride themselves on their store of data and knowledge.
Serious-minded, individualistic and thorough, the 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. The ISTJ is essentially the engine room, the behind-the-scenes worker making it happen. Concentration, willpower and persistence epitomises the ISTJ approach to work and to life and they will begin at the beginning and end at the. Spontaneity and flexibility are less important to the ISTJ. Conservative and risk-averse ISTJs excel when it needs a steady hand and they are unlikely to EVER drop the ball.
Quiet and thoughtful, the ISTJ work best when they are clear on what is expected.
ISTJ's decisions are based on logical sense which can mean the feelings of others may not necessarily be factored in.
Performance driven, where there is a place for everything and everything is in its place.