Introversion and Introversion
Two introverts will get along well and both will give each other enough space to “recharge.” Too much introversion can lead to lack of new experiences and possible social isolation, however.
The ISTJ prefers introversion to extraversion. The ISTJ is energized by their alone time and uses it to sort things out. The ISTJ wants things to make sense and will use the past as a predictor of future events.
Sensing and Sensing
Two sensors will get along well. They both live in the real and the concrete. They are good at living in the present, but they may have some troubles foreseeing potential problems down the line.
The ISTJ prefers sensing to intuition (Using Introverted Sensing). The ISTJ takes in the world in a concrete/matter of fact manner. The ISTJ remembers facts, places, and uses past events to predict future outcomes.
Thinking and Thinking
Two thinkers can make for a very informative relationship. Two thinkers can really discuss matters and learn new things. They enjoy logically understanding their environment. Problems can arise when both types neglect the emotional aspects, which can lead to bottled up emotion.
The ISTJ prefers thinking to feeling (Using Extraverted Thinking). The ISTJ wants the world to be logical and orderly. The ISTJ wants conclusive plans of action and concrete understand of the way things works. This universal acceptance of logic is used to help the ISTJ form their worldview.
Judging and Judging
Two judgers will want their worlds to be ordered and planned out. They would like to know what they are doing beforehand. These judgers will both appreciate each others structure and valuing being on time. However, they can both become stubborn and may clash with each other over which direction to take.
The ISTJ prefers judging to perceiving. The ISTJ prefers structure, routine, and planning things out versus being spontaneous. The ISTJ wants to bring structure, order, and organization to their environment.