Your facial expressions may help people read you like a book, revealing your inner thoughts and feelings, but it turns out your faceâ??s expressivity also affects your ability to understand written language as it relates to emotions.
Researchers at the University of Wisconsin-Madison conducted a study with 40 volunteers before and after they had undergone injections of Botox, a powerful nerve poison used to deactivate muscles in the forehead that cause frowning. They found that the inability to frown caused participants to be less able to understand negative emotions.