How to know if a person is lying

According to a recent research, it's necessary just about  20 seconds to realize if a stranger is trustable or not.  The studies show that 60% of people that were regarded  less trustable don't present a certain receptor gene, the GG, which function is controling compassion and emphatya.

The receptor gene is reponsable for controling the oxytocin hormone levels in the body, since older researches highlight that the hormone is connected to confidence, emphatya and generosity feelings, 90% of people who carried the gene were considered trustable.



Due to some signals, identifying a liar is much simpler than you might imagine. According to Marc Salem, a psychologist, you should look for:

1- Inconscient behavior

You should repair if the person shifts the behavior while talking with you. For instance, if the person is too quiet and suddenly becomes enthusiastic.

2- Stare her/him eyes

If the person often breaks the eye contact, it's a signal that he/she is not hearing you or is trying to get your confidence.

3- Hide the mouth

It might be a signal if the person coughs quite often or any other gesture that implies hiding the mouth, according to Salem, it indicates that the person hides something.

4- Quick smile

It's easy to idetify if a person is showing you a genuine smile, on the other hand, a false smile appears in a second and disappears just in another.

Resource: http://hypescience.com/como-identificar-um-mentiroso/