ISTJ
Logistician · The Inspector
In Myers-Briggs type theory, ISTJ combines I (Introversion: attention to inner reflection and ideas), S (Sensing: taking in concrete information and present details), T (Thinking: using impersonal criteria when making decisions), J (Judging: preferring structure and planning in the outer world). In this type theory, these letters describe preferences, not measured ability, defects, or personal worth.