Gaze shift variable, line of sight to avoid each other when speaking of people generally considered to be lying. States with the other's eyes this time the transfer will increase their level of inner tension. But some clever people have mastered the technology, he can lie to the side while staring at your eyes, or even take the initiative to catch your eye.
Liar. His voice always higher than usual, and sometimes slurred speech, pronunciation errors, repeat the language, or mixed with more than usual "ah ... ... ah." Liar's speech will be and usually not the same as the speed, the time to answer questions before a long pause, this will slow down for the uptake, but had said the slow are faster. This may be due to he wanted to believe he was not the result of lying and deliberately contrived.
When a person is lying rarely smile, even laugh, and often reluctantly put on. There are several ways to identify fake laugh. First of all, from the heart will smile wrinkling his eyes, put a smile out of the muscle can not affect the eye, even touched the hearts are stiff, fleeting; Second, the false smile to maintain a particularly long time, because the fake smile the lack of true feeling of intrinsic motivation, so we do not know when to end; again, for the majority of expression in addition to other surprise, the sudden start and end to show that we consciously use this expression; Finally, the false smile, the face on both sides of the face often some asymmetry, right-handed people are accustomed to false smile higher when the left corners of the mouth to pick, left-handed people are accustomed to, the right corners of the mouth to pick higher.
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