Originally published Sept 15 | By Sarah Regan

According to the Myers-Briggs Type Indicator, each of us falls into one of 16 different types, or personalities, with the ISTJ being the most common of all the MBTI types. Whether you or someone you know is an ISTJ, here’s what to know about this personality type according to experts, from their strengths and weaknesses to how they are in relationships and more.

The ISTJ personality type.

ISTJ stands for introverted, sensing, thinking, and judging. John Hackston, head of thought leadership at the Myers-Briggs Company, tells mbg this type is the most common in the world, making up 16% of the world’s population. And according to him, ISTJs are typically “calm, practical, quiet, serious people who want to know the facts and who put their trust in past experiences.”

He adds that these are also organized people, both at work and at home, who enjoy getting tasks done (preferably alone without distractions). But that trait comes with a downside: “They concentrate on logic and facts so much while making decisions that often they don’t consider how other people feel or are impacted by what they do,” Hackston notes.

Read the full article at Mind Body Green.