Extroverts are more responsive to high-intensity and "happy" stimuli, which may be why an extrovert gets frustrated at the less "readable" face of the introvert.
Laurie HelgoeIntroverts are collectors of thoughts, and solitude is where the collection is curated and rearranged to make sense of the present and future.
Laurie HelgoeAn introvert may feel asocial when pressured to go to a party that doesn't interest her. But for her, the event does not promise meaningful interaction. In fact, she knows that the party will leave her feeling more alone and alienated.
Laurie HelgoeExtroverts are more attuned to social rewards, so they are more likely to flash a smile for effect. A notable exception are introverts - like me - whom I call "socially accessible" introverts. We have been trained well to smile and nod, which can place a burden on our processing efforts.
Laurie Helgoe