I’m often asked about the body language tells that signal deception, and my answer often disappoints. The problem is there’s no one thing done that gives a liar away, much of the things we think we know are wrong, and we are much better liars (and much worse at detecting a lie) than we think. This article will focus on how the words we use (and avoid), and how we say them, may indicate deception. Before turning specifically to the verbal sounds of lying, I must note that body language is also important to consider, especially as liars are more likely to rehearse their words than their gestures, but I’ll save the tells for another day. Most people may be better off listening to liars and not looking at them if they want to detect deception, as what comes out of a liar’s mouth is often more important than their body language. When questioning a liar, it’s useful to first get a vocal baseline, asking safe questions and attending to responses. When hearing those responses, h...
BODY LANGUAGE and NONVERBAL EXPRESSION, The Blog of JOHN B SMITH