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1 .This is Scientific American 60-Second Mind, I'm Christie Nicholson. Got a minute?
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2 .Pheromones: they're those chemical signals often associated with attraction.
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3 .But there are many chemical signals we give off--including ones that might signal alarm, aggression or other emotions.
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4 .For example, take fear.
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5 .If sweat contains compounds associated with fear, could someone smelling the sweat of a frightened person themselves wind up experiencing fear?
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6 .To find out, researchers had male subjects watch two movies.
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7 .One was scary, and the other made viewers feel disgusted.
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8 .The researchers then collected the participants' sweat.
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9 .Female subjects then smelled the sweat, while the scientists recorded their facial expressions.
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10 .And the women who smelled "fear sweat" actually produced fearful facial expressions.
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11 .While those who smelled the "disgust sweat" made disgusted faces.
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12 .The inference is that the chemical compounds impelled the female subjects to remotely experience the same emotions felt by the sweaty males.
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13 .The study is in the journal Psychological Science.
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14 .Despite our lack of conscious awareness of interpersonal chemical communication,
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15 .it seems that we nevertheless do physically and psychologically process such chemical signals.
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16 .The researchers note that this study provides evidence that communication is not limited to language and visual cues alone:
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17 .even we rational humans can become "emotionally synchronized" via scent.
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18 .Thanks for the minute, for Scientific American 60-Second Mind. I'm Christie Nicholson.
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