Award-winning social scientist and Harvard Ph.D. Bella DePaulo has been studying the psychology of deceiving and detecting deceit for decades. "The Hows and Whys of Lies" provides brief and accessible answers to some of the most fundamental questions about lying. For example: 1. How often do people lie? 2. What do people lie about? 3. How do liars justify their lies? 4. How do liars tip off their lies? 5. When liars care the most about getting away with their lies, is that when they are most likely to screw up? 6. How good are people at knowing when someone is lying to them? 7. Do people have intuitions about deceptiveness that they don't know how to tap into? There are two sections to the book: "The many faces of lies," and "Discerning lies from truths: Behavioral cues to deception and the indirect pathway of intuition."