"Introverts - energized by their world of ideas, thoughts, and concepts - are not often motivated to influence others [?]. When introverts do choose to influence others, they commonly do so by presenting ideas, plans, visions, or values - often in writing - that will be compelling and attractive. As is the case with all Introverts, an Introverted leader has lot brewing under the surface, but only lets out or shares a small piece of it."
Type Talk at Work, Kroeger,Thuesen, and Rutledge. 76