Paul Ekman is amongst the world’s most renowned industry experts on facial expression. His analysis is specific and nicely-researched. He has a bit identified as “Clues to Deceit” in his book which speaks pretty specifically about facial expressions & how they are often utilized to identify when persons are lying. https://how-to-read-body-language77541.digitollblog.com/39147226/a-secret-weapon-for-how-to-read-body-language-system