Smile at them and they’ll remember you better
Dave Munger over at Cognitive Daily points to some interesting research:
There’s another factor that has been demonstrated to have a significant effect on whether a face is remembered: the facial expression. In 2004, Arnaud D’Argembeau and Martial Van der Linden found that people who viewed a series of photos of faces were more likely to remember smiling faces compared to angry faces — even when the faces they were later asked to recall had neutral expressions.