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.
Due to research on the science of detecting deception through behavioural cues it's possible for a trained individual to analyse behaviour - usually video footage, enabling thorough empirical investigation - and make an accurate assessment of an individual's truthfulness (Frank, Feeley, Servoss, & Paolantonio, 2004). Although there are behavioural cues to lying, there is no single sign of deceit itself. "Nonverbal communication and lying are more complicated by the fact there are no clear-cut guaranteed clues to deceit" (Frank & Svetieva, 2012).