When researchers show East Asian and Western Caucasian people photos of faces displaying different emotions, the Asian participants tend to make conclusions about the emotions based on what people are doing with their eyes, whereas the Western participants look to the mouth to read emotions. This tendency is reflected in the different conventions for portraying emotions in manga and anime versus Western cartoons, and it shows up again in the stylized faces of emoticons and kaomoji. Happy :) and sad :( emoticons can have the same eyes but must have different mouths, whereas happy ^_^ and sad
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