Scientists have found out that test subjects almost always perceive the facial expression on Leonardo da Vinci's famous painting as happy, thus calling into question a long-held assumption in art ...

Cross-cultural research suggests that there are about half a dozen basic facial expressions in humans, such as happiness, sadness, fear, surprise, anger, and disgust. Around the world, people are very ...

WASHINGTON – Creases and furrows on someone's face may put a wrinkle in our ability to properly judge his or her emotions, a new study suggests. In the study, participants viewed photographs of 64 ...