Other investigators have examined the physiology of cursing, how our senses and reflexes react to the sound or sight of an obscene word. They have determined that hearing a curse elicits a literal rise out of people. When electrodermal wires are placed on people’s arms and fingertips to study their skin conductance patterns and the subjects then hear a few obscenities spoken clearly and firmly, participants show signs of instant arousal.
Their skin conductance patterns spike, the hairs on their arms rise, their pulse quickens, and their breathing becomes shallow.
Link to the NYT article.
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