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Sunday, June 30, 2013

Emotions = faces

About Face

For half a century, one theory about the way we experience and express emotion has helped shape how we practice psychology, do police work, and even fight terrorism. But what if that theory is wrong?

By  | Boston Magazine | 
emotions-facial-expressions-not-related-1
PHOTOGRAPHS BY JESSE BURKE
Forty-six years ago a young San Francisco–based cowboy of a psychologist named Paul Ekman emerged from the jungle with proof of a powerful idea. During the previous couple of years, he had set out trying to prove a theory popularized in the 19th century by Charles Darwin: that people of all ages and races, from all over the world, manifest emotions the same way. Ekman had traveled the globe with photographs that showed faces experiencing six basic emotions—happiness, sadness, fear, disgust, anger, and surprise. Everywhere he went, from Japan to Brazil to the remotest village of Papua New Guinea, he asked subjects to look at those faces and then to identify the emotions they saw on them. To do so, they had to pick from a set list of options presented to them by Ekman. The results were impressive. Everybody, it turned out, even preliterate Fore tribesmen in New Guinea who’d never seen a foreigner before in their lives, matched the same emotions to the same faces. Darwin, it seemed, had been right.

Taking emotions at face value

Boston Magazine has a fascinating article on the work of psychologist Lisa Feldman Barrett who has been leading the charge against the idea that we recognise the same facial expression of emotion across the world.
This was first suggested by Paul Ekman whose work suggested that humans can universally recognise six emotions: anger, disgust, fear, happiness, sadness, and surprise.
His research involved showing people from different cultures pictures of faces and asking them to label each expression from a choice of emotional words.
But Barrett has found a simple flaw in the procedure:
She returned to those famous cross-cultural studies that had launched Ekman’s career—and found that they were less than watertight. The problem was the options that Ekman had given his subjects when asking them to identify the emotions shown on the faces they were presented with. Those options, Barrett discovered, had limited the ways in which people allowed themselves to think.
Barrett explained the problem to me this way: “I can break that experiment really easily, just by removing the words. I can just show you a face and ask how this person feels. Or I can show you two faces, two scowling faces, and I can say, ‘Do these people feel the same thing?’ And agreement drops into the toilet.”
The article is on much more than this controversy in cognitive science and also tracks how research on emotion and facial expression is playing an increasing role in law enforcement – with not all of it well supported by evidence.
And if you want links to some of the scientific papers, the always interestingNeuroanthropology blog has more at the bottom of this post.
 
Link to Boston Magazine article ‘About Face’.

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