Your secondary mode is external, where you deal with things rationally and logically. ISTJs istj personality description quiet and reserved individuals who are interested in security and peaceful living. They have a strongly-felt internal sense of duty, which lends them a serious air and the motivation to follow through on tasks.
People with an ISTJ personality type tend to be reserved, practical and quiet. They enjoy order and organization in all areas of their lives including their home, work, family and projects. ISTJs value loyalty in themselves and others, and place an emphasis on traditions.
Source. Movie Preferences survey, 8115 respondents. Introduction My observation is that whenever one person is found adequate to the discharge of a duty... Their defining characteristics of integrity, practical logic and tireless dedication to duty make Logisticians a vital core to many families, as well as organizations that uphold traditions, rules and standards, such as law offices, regulatory bodies and military.
Source. Movie Preferences survey, 8115 respondents. Strong-willed and Dutiful — Logisticians embody that integrity in their actions too, working hard and staying focused on their goals.