Body language is a form of non-verbal communication, which consists of body posture, gestures, facial expressions, and eye movements. Humans send and interpret such signals almost entirely subconsciously.
Body language is the unspoken or non-verbal mode of communication that we use in every single aspect of our interaction with another person. It is like a mirror that tells us what the other person thinks and feels in response to our words or actions. 55% of the messages that we convey to other people are transmitted through body language. The actual verbal communication accounts for the other 38% in tone of voice and only 7% in the words we use (*When verbal context is ambiguous).
Body language may provide clues as to the attitude or state of mind of a person. For example, it may indicate aggression, attentiveness, boredom, relaxed state, pleasure, amusement, and intoxication, among many other cues.
Click here for information on the first online Micro Expressions & Body Language 101 interactive 8-Module Online Course. Learn how to detect lies, how to read body language, and how to read micro expressions.
Guideline to Catching Liars by Examining Nonverbal and Verbal Behaviour - Interviewing to Detect Deception (15): Ask temporal questions when a scripted answer is suspected.
A good strategy for a liar is to fabricate a story which is in fact true, but which happened at another time (an embedded lie). Instead of asking questions about what and where the story took place, start asking questions related to the time the story was meant to have taken place e.g. who else was there, what was on the television, what was the traffic like etc.