Scientists at Northwestern University (USA) showed in a recent study that you can learn to tell a lie in such a way that it appears identical to the truth .
Typically, people take longer and make more mistakes when they tell a lie than when they tell the truth. This happens, in essence, because in your head you are managing two answers that contradict each other, and trying to suppress the most honest option. However, with proper practice recognizable differences can disappear. Xiaoqing Hu and his colleagues tested a "liar training" system in which a series of subjects learned to increase the speed of response when the content of their words was uncertain. After practicing and repeating the lie in their minds several times, they found that from a certain point individuals made no mistakes when telling it, and they responded at the same speed by lying when what they said was true.
The new finding should be taken into account by the police when committing a crime. "In real life, there is usually a time between when a crime occurs and suspects are questioned, long enough to prepare and practice lies," Hu warns.
