South Carolina Private Security Licensing Board, Training Materials | Learning-Shop-USA

“Actions speak louder than words” is an expression used in many contexts and is particularly applicable in the context of interviewing and interrogating. We use the term “body language” when referring to body movements that occur in response to a fear-inducing question. A deceptive person, i.e., a person hiding the truth, will experience physiological changes resulting from fear of detection.https://www.learningshopusa.com/training-materials.html