“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.
What is one reason Anderson is looking for alternatives to body suits?
Body suits are costly Body suits will become expensive in the future The new suit is only 82.2% reliable Body suits take a long time to manufacture