Extroverts 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 HelgoeAs an introvert, you can be your own best friend or your worst enemy. The good news is we generally like our own company, a quality that extroverts often envy. We find comfort in solitude and know how to soothe ourselves.
Laurie HelgoeIntroverts are generally more sensitive to low-intensity stimuli - they are mentally alerted to inputs that extroverts may miss.
Laurie HelgoeIntrovert, her brain responds with a high level of activity, it is as if several lights start flashing on a control panel.
Laurie Helgoe