How to know if he/she is a liar

1.Body language
The physical expressions of a liar may appear to be stiff or limited. It is typical to see less hand and arm movement. The liar will try to withdraw into their own space.A liar will often try to avoid eye contact. There of course may be other reasons for this response too and people with experience in a bi-cultural or multicultural setting may come across this trait without it being an indication or otherwise of honesty.Another point that is often referred to in the literature on this topic is the tendency of someone who is lying is put their hands up near their face. Perhaps they will touch their throat or mouth, scratch their ear etc.

2.Reactions and method of interaction.
Someone who is lying will be uncomfortable when they have to face the person asking them questions or accusing them of a lie. Often this will translate into a person turning their body or head in a different direction.It is also the case that a person who is lying will get very defensive. A person who is telling the truth will be more likely to attack or go on the offensive.Liars may try to put physical barriers between them and the accuser. This may translate into the unconscious placing of an object, such as a piece of furniture, between themselves and the person who they are lying to, or they may cross their arms.

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