Don’t believe people who say they can look at your face and tell that you’re lying.

Kevin Lewis points us to this article, Lessons From Pinocchio: Cues to Deception May Be Highly Exaggerated, by Timothy Luke, which begins: Deception researchers widely acknowledge that cues to deception—observable behaviors that may differ between truthful and deceptive messages—tend to be weak. Nevertheless, several deception cues have been reported with unusually large effect sizes, and …