“Overall, we correctly guessed whether 82.2% (truths: 88.9%; lies: 75.6%) of the interviewees were telling the truth or lying based on the movements in their individual limbs,” the report says. Anderson said: “First, we looked at how much different body parts showed that someone was lying. We found that liars wave their arms more, but this is only at the 55% level that you can get from a polygraph. The success came when we looked at total body motion. That tells truth from lies over 70% of the time.” The use of all-body suits is expensive – they cost about £30,000 – and they can be uncomfortable, so Anderson and his colleagues are now studying low-cost alternatives. These include using motion-sensing technology from computer games, such as the Kinect camera devices developed by Microsoft for the Xbox console.
Which of the following is true about body suits?
They cost a lot of money They are comfortable They were inspired by game consoles They are very durable