Social interactions often include subtle signals that give us a peek into how others truly feel about us. Research indicates that people can express dislike not only with words but also through actions, even when trying to hide their real feelings. While direct confrontations are rare in everyday social settings, many people unknowingly show their discomfort through certain behavioral cues that psychologists have studied closely. By learning to recognize these signs, you can navigate your relationships more thoughtfully and avoid investing energy in shallow or insincere connections.

Their Smile Doesn’t Reach Their Eyes

A genuine smile lights up your face and involves almost 17 facial muscles, including those around the eyes. In the 19th century, neurologist Guillaume Duchenne described this as the Duchenne smile, which causes the skin around the eyes to crinkle at the corners. In contrast, a forced smile engages only the zygomaticus muscle around the mouth, producing a simple upward curve without reaching the eyes. Research from Stanford University shows that you can tell if a smile is real by looking for visible lower teeth and crow’s feet forming at the eye corners.

Research published in Nature Human Behaviour shows that while people can temporarily lift their mood with posed smiles, others can usually tell whether a smile is real or fake. Moreover, those who often wear fake smiles might be seen as less trustworthy and less likable. The facial feedback hypothesis holds that genuine smiles send positive signals through facial feedback, whereas forced smiles lack this genuine emotional cue. Additionally, asymmetry in a smile can indicate dishonesty, as fake smiles often involve one side of the face more than the other.