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This document summarizes a 5-day module on why people lie. Day 1 explores how frequently people lie and the difference between lies and deception. Day 2 looks at how deception can persist in evolutionary communication. Day 3 examines how deception is used in advertising to attract mates and make sales. Day 4 investigates physiological and behavioral changes when lying and methods to detect lies. Day 5 covers self-deception and how lying to oneself can be adaptive.
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- 1. Module 5: Why People Lie
- 2. Module 5: Day 1 Everyone Lies Believe it or not, people rarely go a day without telling a lie. And that’s no lie. Today we explore the frequency and nature of lying. You will learn how lies differ from deception and how humans use a theory of mind to deceive. “You sit on a throne of LIES!!” Elf, 2003
- 3. Module 5: Day 2 How Does Deception Evolve? If everyone lied, people wouldn’t bother to listen to one another. And yet we do listen to other people. Today, we explore how deception persists in evolutionarily stable systems of communication. You will learn that deception can occur when the cost of calling a bluff exceeds the benefit of discovering lies. Honest communication evolves when organisms communicate through costly signals that cannot be faked.
- 4. Module 5: Day 3 No Truth in Advertising They say there’s no such thing as bad press. But advertisers spend countless hours, calories, and dollars on perfecting their message. Today, we explore how deception enhances the way that people advertise, whether they be selling merchandise or selling themselves. You will learn how deception plays a role in attracting mates and securing parental care. You will also learn how people use deception to enhance trade with others—an practice that we have come to call marketing.
- 5. Module 5: Day 4 How Brains Lie When you lie, your body shows signs that might be noted by keen observers. Today, we explore the behavioral and physiological changes during lying and ways that people can detect lies. You will learn about methods of lie detection based on psychological profiling, cardiovascular responses, voice analysis, and brain scans.
- 6. Module 5: Day 5 Self Deception If you’re like me you’re smarter and better looking than the average person. But of course, neither of us are the best judge of our own qualities. That’s because people tend to believe what we want to believe, whether it’s true or not. Today, we explore the concept of self-deception and see how lying to yourself can be adaptive. You will learn that deceiving yourself and deceiving others involve similar processes.