Several studies have shown that perfumes encourage prosocial behavior of people from whom help is requested in the street. Implicit requests for help were studied. On a pedestrian walk, a woman confederate, with or without a heavy perfume, walked by the subject while dropping a packet of paper handkerchiefs or a glove apparently without noticing. Results show that the confederate was warned more often when wearing a perfume.
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Nicolas Guéguen (2001) studied this question.
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