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 HelgoeIntrovert conversations are like jazz, where each player gets to solo for a nice stretch before the other player comes in and does his solo. And like jazz, once we get going, we can play all night. Extrovert conversations are more like tennis matches, where thoughts are batted back and forth, and players need to be ready to respond. Introverts get winded pretty quickly.
Laurie HelgoeIf the extrovert is trying to "cheer up" the introvert - extroverts are programmed to seek social rewards! - he or she may feel like a failure if the introvert remains unmoved.
Laurie HelgoeIntroverts are generally more sensitive to low-intensity stimuli - they are mentally alerted to inputs that extroverts may miss.
Laurie Helgoe