facial expression and body movement

Forget about the online training. He shook his head violently as he was talking about its usefulness at 3:12 😀

Published on Oct 1, 2012

Paul Ekman’s research on facial expression and body movement began in 1954, as the subject of his Master’s thesis in 1955 and his first publication in 1957. In his early work, his approach to nonverbal behavior showed his training in personality. Over the next decade, a social psychological and cross-cultural emphasis characterized his work, with a growing interest in an evolutionary and semiotic frame of reference. In addition to his basic research on emotion and its expression, he has, for the last thirty years, also been studying deceit.

There’s no question from public opinion polls that people care a lot about the honesty of the person they’re dealing with, whether that’s their doctor or their political leader. And yet it’s more complex than that. Often we don’t want to know the truth.

Do you want to find out that your spouse is cheating on you? Do you want to find out the person that you recommended for a job in your company is embezzling? Do you want to find out that your kids are using heroin? These of course are all things that you want to know but you certainly don’t want to know.

So it’s very complex as to whether or not we really want to catch a liar. We think we do. What if we find out that both of our presidential candidates are lying? Then what do we do? I’m not saying they are; I never comment on anyone in office or running for office. Only after they’re out that they’re fair game. Clinton said, “I didn’t have sex with that woman” and then gave her name. “That woman” is putting her at a distance from himself.

Now there are many reasons why people lie and some are honorable. I study the lies that society cares about, cares about catching, generally disapproves of.

The most common reason why people lie is to avoid punishment for breaking a rule. Usually some rules are broken accidentally. You walk down the hallway too fast and you knock over a $2,000 jar that’s on the stand. You didn’t mean to do that. “Did you knock over that jar?” Well, you’re not going to — “Yes, I did…” “No, I don’t know who knocked over that jar. It wasn’t knocked over when I walked by.” You don’t want to get punished. But there are many times where we make the decision — I’m going to break a rule, I’m going to cheat, and I’m going to lie about it. I’m not going to admit that I cheated; I don’t want to get caught. So the decision to lie is made at the same time as the decision to cheat.

When we teach people, and we do in workshops teach people how to catch liars, it takes us 32 hours.

Spotting a micro expression is the single most useful thing. This is an expression that lasts about a 25th of a second. We’ve tested over 15,000 people in all walks of life and over 99 percent of them don’t see them, and yet with an hour’s training on the Internet they can learn to see them. 

However, that may only tell you that the person’s concealing an emotion. That’s a lie — they’re not telling you how they really feel. But it may not tell you that they’re the perpetrator of a crime. It’s a terrible example, but I have to use it — my wife is found dead. I will be the first suspect because, regrettably, the person most likely to kill their wife is the husband. . . . “But I love my wife! I didn’t kill her. The police are wasting their time and they’re insulting me! Time is going by and they’re not looking for the real person.” I could be furious at them and concealing my anger. And so if you spot my concealed anger, it doesn’t mean I killed my wife. It only means that I’m concealing my anger. Now if a lie is about how do you really feel, Paul, and you spot a micro expression, then you’ve got it.

Second, realize that only the gestures of your cultural group are you going to recognize. That’s body specific language, but you already know them. You can’t — if I asked you how many gestures are used in America today, you’d give me about 12, but there are actually 80. And if I showed you every one of those 80, you’d know what they mean.

Now the one that amazingly enough has had an enormous payoff is one of the most common ones we use, which is the headshake, yes and no. I just did this. This is actually “yes” and this is “no.” But it occurs in a micro fashion. So I worked on the case of an embezzler who had embezzled over $100 million. He was really big time until Bernie Madoff came along. This embezzler had accused people in a number of banks of being in on the deal, which meant those banks would be vulnerable to having to pay for the embezzlement. And when one of the people who he falsely accused, he is asked, “Did she help you steal the money?” He said, “Yes. Absolutely, she did.” Doing a slight headshake, no. Even tinier than mine.

So there’s a gesture one. There’s a face one.

Directed / Produced by Jonathan Fowler & Elizabeth Rodd

New emotion detector can see when we’re lying

By Hamish PritchardScience Reporter, Bradford

Our faces betray a range of emotions; the thermal sensor even detects changes in blood vessels

A sophisticated new camera system can detect lies just by watching our faces as we talk, experts say.

The computerised system uses a simple video camera, a high-resolution thermal imaging sensor and a suite of algorithms.

Researchers say the system could be a powerful aid to security services.

It successfully discriminates between truth and lies in about two-thirds of cases, said lead researcher Professor Hassan Ugail from Bradford University.

The system, developed by a team from the universities of Bradford and Aberystwyth in conjunction with the UK Border Agency, was unveiled today at the British Science Festival in Bradford.

This new approach builds on years of research into how we all unconsciously, involuntarily reveal our emotions in subtle changes of expression and the flow of blood to our skin.

We give our emotions away in our eye movements, dilated pupils, biting or pressing together our lips, wrinkling our noses, breathing heavily, swallowing, blinking and facial asymmetry. And these are just the visible signs seen by the camera.

Even swelling blood vessels around our eyes betray us, and the thermal sensor spots them too.

Real-world test

Traditional lie detection depends on the venerable polygraph, first developed in 1921, a much more invasive apparatus with a set of wires attached to the skin. This new device promises non-invasive, even covert truth tests in real time.

“We bring together all this well-established work on expressions, these recent developments in thermal imaging, techniques for image tracking of subjects and our new algorithms into one operational system,” said Professor Ugail.

About arnulfo

veterano del ciberespacio
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