The software could identify liars in the way they move their hands, but also in their choice of words.
In experiments with images from the courtroom to the computer failed in 75 percent of cases in order speakers to ontmakeren telling lies.
This was reported by the University of Michigan.
Stop Words
The scientists developed the software by letting computer images analysis of lying people in video clips of news channels. In retrospect, it was all these people determined unambiguously demonstrated that they had not told the truth.
An analysis of the computer would show that liars, their hands moved excessively on the images, leaving their faces regularly in a grimace and their interlocutors often tight mustering. Furthermore, they often stop using words like “um” and “uh.”
According to lead researcher Rada Mihalcea computer analysis is more reliable than research involving human subjects in a laboratory. “In laboratory experiments is difficult to create a setting in which people lie convincing,” she explains. “For this, the situation is usually not realistic enough.”
Heart
was finally developed the software based on computer analysis liars in the act should catch. The score of 75 percent that was achieved in the first test, according Mihalcea promising. People would score according to its worse. “People mediocre performance when it comes to lie detection.”
The scientists plan to expand the lie detection software yet. For example, the computer program in the future, also the heart rate and body temperature of people have to go in card with the aid of heat cameras. In this way would nervous people can be recognized earlier.
“Lie detection is a very difficult challenge, we approach the problem therefore from several directions,” said researcher Mihai Burzo.
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