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Contagious Yawning May Predict Psychopathic Tendencies In Humans
Most of us have experienced someone yawning near us, then having a sudden urge to yawn as well. It’s a phenomenon common to mankind. The phenomenon has also been observed
Most of us have experienced someone yawning near us, then having a sudden urge to yawn as well. It’s a phenomenon common to mankind. The phenomenon has also been observed