How to Tell if Someone is Lying
"The following techniques to telling if someone is lying are often used by police, and security experts. This knowledge is also useful for managers, employers, and for anyone to use in everyday situations where telling the truth from a lie can help prevent you from being a victim of fraud/scams and other deceptions...
Signs of Deception:
Body Language...
Emotional Gestures & Contradiction...
Interactions and Reactions
• A guilty person gets defensive. An innocent person will often go on the offensive....
Verbal Context and Content
• A liar will use your words to make answer a question. When asked, “Did you eat the last cookie?” The liar answers, “No, I did not eat the last cookie.”...
Other signs of a lie:
• If you believe someone is lying, then change subject of a conversation quickly, a liar follows along willingly and becomes more relaxed. The guilty wants the subject changed; an innocent person may be confused by the sudden change in topics and will want to back to the previous subject..."
Read more in this post from blifaloo.