Health, Sports & Psychology
How many different types of smile are there?
...System, written with Wallace V Friesen, seeks to create an atlas of nearly all possible human expressions. Ekman says, in his book Telling Lies, that their technique for measuring the face can distinguish over 50 different smiles. Confused? You’re not the only one. Perhaps the best approach is to just grin and bear it… This article was originally published by Mosaic...