Without thinking, humans tend to mimic the facial expressions of others. When other individuals smile, people smile and feel warmth. When others frown, people frown and share their sadness. This empathetic response is so strong that people might even instinctively copy the facial expressions of creepy robots, a new study suggests. Researchers observed how students interacted with a robot made to look like physicist Albert Einstein to explore the phenomenon of facial mimicry. This instinctive human quirk, also observed in chimps, causes individuals to subconsciously mimic each other's facial...
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