How to tell whether another person is lying?

Psychologists say that people are lying love of animals, and speak more than aware of his own more. Feldman American social psychologists believe that there are different levels of the points lie, and lie in the motivation classified into three categories: first, to discuss other favor, make people feel better; the second category, boasting its own style and equipment ; the third category, self-protection.

 
  
 

 
Psychologists believe that people will not consciously lie to others, sometimes even Xiangyebuxiang not even admit to lying. Most lies are polite response, such as "You're wearing is not fat, ah," "another day to find your cup of tea" "I can not come today, I'm sick," "I called you, but playing not "and so on. Psychologists believe that lying is not always a bad behavior, out of courtesy, out of love to lie, can often come good karma, because this is a kind of interpersonal skills.

 
How to see people say life is a lie or truth? Psychologists teach us some of the ways:

 
Lie, the liar usually the following symptoms: pupil expansion; volume and tone of voice mutation; smile less; blink too much; frequently shrug (mainly Western); surprisingly more or less eye contact; speak with a more in pause, pretending to clear his throat, interspersed with "ah" and Mood; often Mobi Zi; frequent swallowing.