Why Are Certain Smells So Hard to Identify? - The New Yorker - 0 views
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A recent paper in the journal Cognition, for instance, quipped that if people were as bad at naming sights as they are at naming scents, “they would be diagnosed as aphasic and sent for medical help.” The paper quoted scattershot attempts by participants in a previous study to label the smell of lemon: “air freshener,” “bathroom freshener,” “magic marker,” “candy,” “lemon-fresh Pledge,” “some kind of fruit.” This sort of difficulty seems to have very little to do, however, with the nose’s actual capabilities. Last spring, an article in the journal Science reported that we are capable of discriminating more than a trillion different odors. (A biologist at Caltech subsequently disputed the finding, arguing that it contained mathematical errors, though he acknowledged the “richness of human olfactory experience.”) Whence, then, our bumbling translation of scent into speech?
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That question was the subject, two weekends ago, of an American Association for the Advancement of Science symposium at the San Jose Convention Center (which smelled, pleasantly but nonspecifically, of clean carpet). The preëminence of eye over nose was apparent even in the symposium abstract, which touted data that “shed new light” and opened up “yet new vistas.” (Reading it over during a phone interview, Jonathan Reinarz, a professor at the University of Birmingham, in England, and the author of “Past Scents: Historical Perspectives on Smell,” asked me, “What’s wrong with a little bit of inscent?”) Nevertheless, the people on the panel were decidedly pro-smell. “One thing that everyone at this symposium will agree on is that human olfactory discriminatory power is quite excellent, if you give it a chance,” Jay Gottfried, a Northwestern University neuroscientist, told me. Noam Sobel, of the Weizmann Institute of Science, used a stark hypothetical to drive home the ways in which smell can shape behavior: “If I offer you a beautiful mate, of the gender of your choice, who smells of sewage, versus a less attractive mate who smells of sweet spice, with whom would you mate?”
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But difficulty with talking about smell is not universal. Asifa Majid, a psycholinguist at Radboud University Nijmegen, in the Netherlands, and the organizer of the A.A.A.S. symposium, studies a group of around a thousand hunter-gatherers in northern Malaysia and southern Thailand who speak a language called Jahai. In one analysis, Majid and her colleague Niclas Burenhult found that speakers of Jahai were as good at classifying scratch-and-sniff cards as they were at classifying color chips; their English-speaking counterparts, meanwhile, tended to give meandering and disparate descriptions of scents. At the symposium, Majid presented new research involving around thirty Jahai and thirty Dutch people. In that study, the Jahai named smells in an average of two seconds, whereas the Dutch took thirteen—“and this is just to say, ‘Uh, I don’t know,’ ” Majid joked onstage.
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