Time spent alone is essential. Too much time with people, particularly strangers, is often draining. Affirmation, confirmation, or verification are gotten from our inner experience, from what goes on inside us.
Time alone is needed to figure things out, to get in touch with our introspective strength.
At meetings, may hold back, then have trouble getting into the discussion. Often has good writing skills and prefers presenting ideas in writing. Is not highly observant of the outer environment. Is very aware of our inner reactions and tends to be introspective. Generally difficult to get to know.