Botox injections put a crease in emotional evaluations

Botox treatment to erase unsightly frown lines may cause unforeseen emotional wrinkles. First-time Botox patients become slower at evaluating descriptions of negative emotions, possibly putting the patients at a social disadvantage, a new study indicates.

For more than a century, scientists have posited that facial expressions trigger and intensify relevant feelings, rather than simply advertise what an individual already feels.