Malcolm Gladwell writes:
2.
All of us, a thousand times a day, read faces. When someone says "I love you," we look into that person's eyes to judge his or her sincerity. When we meet someone new, we often pick up on subtle signals, so that, even though he or she may have talked in a normal and friendly manner, afterward we say, "I don't think he liked me," or "I don't think she's very happy." We easily parse complex distinctions in facial expression. If you saw me grinning, for example, with my eyes twinkling, you'd say I was amused. But that's not the only way we interpret a smile. If you saw me nod and smile exaggeratedly, with the corners of my lips tightened, you would take it that I had been teased and was responding sarcastically. If I made eye contact with someone, gave a small smile and then looked down and averted my gaze, you would think I was flirting. If I followed a remark with an abrupt smile and then nodded, or tilted my head sideways, you might conclude that I had just said something a little harsh, and wanted to take the edge off it. You wouldn't need to hear anything I was saying in order to reach these conclusions. The face is such an extraordinarily efficient instrument of communication that there must be rules that govern the way we interpret facial expressions. But what are those rules? And are they the same for everyone?
In the nineteen-sixties, a young San Francisco psychologist named Paul Ekman began to study facial expression, and he discovered that no one knew the answers to those questions. Ekman went to see Margaret Mead, climbing the stairs to her tower office at the American Museum of Natural History. He had an idea. What if he travelled around the world to find out whether people from different cultures agreed on the meaning of different facial expressions? Mead, he recalls, "looked at me as if I were crazy." Like most social scientists of her day, she believed that expression was culturally determined-- that we simply used our faces according to a set of learned social conventions. Charles Darwin had discussed the face in his later writings; in his 1872 book, "The Expression of the Emotions in Man and Animals," he argued that all mammals show emotion reliably in their faces. But in the nineteen-sixties academic psychologists were more interested in motivation and cognition than in emotion or its expression. Ekman was undaunted; he began travelling to places like Japan, Brazil, and Argentina, carrying photographs of men and women making a variety of distinctive faces. Everywhere he went, people agreed on what those expressions meant. But what if people in the developed world had all picked up the same cultural rules from watching the same movies and television shows? So Ekman set out again, this time making his way through the jungles of Papua New Guinea, to the most remote villages, and he found that the tribesmen there had no problem interpreting the expressions, either. This may not sound like much of a breakthrough. But in the scientific climate of the time it was a revelation. Ekman had established that expressions were the universal products of evolution. There were fundamental lessons to be learned from the face, if you knew where to look.
Paul Ekman is now in his sixties. He is clean-shaven, with closely set eyes and thick, prominent eyebrows, and although he is of medium build, he seems much larger than he is: there is something stubborn and substantial in his demeanor. He grew up in Newark, the son of a pediatrician, and entered the University of Chicago at fifteen. He speaks deliberately: before he laughs, he pauses slightly, as if waiting for permission. He is the sort to make lists, and number his arguments. His academic writing has an orderly logic to it; by the end of an Ekman essay, each stray objection and problem has been gathered up and catalogued. In the mid-sixties, Ekman set up a lab in a ramshackle Victorian house at the University of California at San Francisco, where he holds a professorship. If the face was part of a physiological system, he reasoned, the system could be learned. He set out to teach himself. He treated the face as an adventurer would a foreign land, exploring its every crevice and contour. He assembled a videotape library of people's facial expressions, which soon filled three rooms in his lab, and studied them to the point where he could look at a face and pick up a flicker of emotion that might last no more than a fraction of a second. Ekman created the lying tests. He filmed the nurses talking about the movie they were watching and the movie they weren't watching. Working with Maureen O'Sullivan, a psychologist from the University of San Francisco, and other colleagues, he located people who had a reputation for being uncannily perceptive, and put them to the test, and that's how Yarbrough and the other high-scorers were identified. O'Sullivan and Ekman call this study of gifted face readers the Diogenes Project, after the Greek philosopher of antiquity who used to wander around Athens with a lantern, peering into people's faces as he searched for an honest man. Ekman has taken the most vaporous of sensations-- the hunch you have about someone else-- and sought to give them definition. Most of us don't trust our hunches, because we don't know where they came from. We think they can't be explained. But what if they can?
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