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.

Introverts tend to internalize problems. In other words, we place the source of problems within and blame ourselves. Though introverts may also externalize and see others as the problem, it's more convenient to keep the problem "in house." Internalizers tend to be reliable and responsible, but we can also be very hard on ourselves.

With public speaking, practicing congruence is very helpful - allowing the words to be expressed with the face and body. It helps to think of simply "turning up the nonverbal volume."

Some findings reveal extroverts as more adept at reading nonverbal cues, and attribute this to the extrovert's greater interest and experience with social interactions. Another line of research using subliminal images of facial emotion found introverts to be more sensitive to the differences, and hypothesized that this may be why introverts regulate the amount of incoming social information.

Introverts like being introverts. We are drawn to ideas, we are passionate observers, and for us, solitude is rich and generative.

Introverts often assume what's inside is visible on the outside. We don't have to invent or fake the emotion; we just need to allow it to be seen!

Asking others for input puts you in the driver's seat, and may feel less awkward than having to watch yourself on video.