Atlantic staff writer Olga Khazan, a lifelong introvert, set out to change aspects of her personality she didn't like by ...

A new study led by Michigan State University found that as people get better at handling stress on a daily basis, they also become more extroverted, agreeable and open to new experiences over a nearly ...

You just go, and extroversion will find you, like the entire wedding follows the first intrepid dancer. Coincidentally, this is also the ethos behind improv comedy: You just have to say something.