ISTJ
ISTJ: Quiet, serious, earn success by thoroughness and dependability. Practical, matter-of-fact, realistic, and responsible. Decide logically what should be done and work toward it steadily, regardless of distractions. Take pleasure in making everything orderly and organized their work, their home, their life. Value traditions and loyalty. Dominant function: Introverted Sensing.
Auxiliary function: Extraverted Thinking.
Extraversion
People who prefer Extraversion tend to focus on the outer world of people and things. E4 16I Intraversion
People who prefer Intraversion tend to focus on the inner world of ideas and impressions. Sensing
People who prefer Sensing tend to focus on the present and on concrete information gained from the senses. S15 11N Intuition
People who prefer Intuition tend to focus on the future, with a view toward patterns and possibilities. Thinking
People who prefer Thinking tend to base their decitions primarilly on logic and on objective analysis of cause and effect. T18 5F Feeling
People who prefer Feeling tend to base their decisions primarilly on values and on subjective evaluation of person-centered concerns. Judging
People who prefer Judging tend to like a planned and organized approach to life and prefer to have things settled. J20 2P Perceiving
People who prefer Perceiving tend to like a flexible and spontaneous approach to life and prefer to keep their options open.