ISTP

The ISTP personality type is one of the 16 personality types described by Isabel Briggs-Myers and Katherine Cook Briggs, and stands for Introversion, Sensation, Thinking, Perceiving.

Jung's Analysis
Carl Jung had first categorized his subjects as leading from one of four separate axioms of being: Thinking, Feeling, Sensation, Intuition, and paired this with their preference for either Extroversion or '''Introversion. '''

In the case of both the ISTP and INTP, Jung would have characterized this type as having dominant Introverted Thinking (Ti), which is primarily characterized by a desire to categorize elements of the world to create a complete, subjective understanding of them.