Preface ix
Introduction: What Is Rationality? xv
Part I On Anger and Commitment
Chapter 1 What Is the Point of Getting Annoyed? Emotions as a Mechanism for Creating Commitments 3
Chapter 2 Why We Love Those Who Are Cruel to Us: Stockholm Syndrome and the Story of the Nazi Schoolteacher 12
Chapter 3 Emotional Impostors, Empathy, and Uncle Ezra's Poker Face 18
Chapter 4 Game Theory, Emotions, and the Golden Rule of Ethics 31
Chapter 5 The Prisoner's Dilemma in Repeated Interactions: Do Drawn Knives Increase Cooperation in the World? 38
Chapter 6 On Decency, Insult, and Revenge: Why Don't Suckers Suffer from Disgust? 51
Part II On Trust and Generosity
Chapter 7 On Stigmas and Games of Trust: Why Did the Bees Commit Suicide? 61
Chapter 8 Self-Fulfilling Mistrust 69
Chapter 9 Cultural Differences, Palestinian Generosity, and Ruth's Mysterious Disappearance 73
Chapter 10 Collective Emotions and Uncle Walter's Trauma 87
Chapter 11 The Handicap Principle, the Ten Commandments, and Other Mechanisms for Ensuring Collective Survival 98
Chapter 12 Knowing How to Give, Knowing How to Receive: The Full Half of the Cholent 110
Part III On Love and Sexuality
Chapter 13 The Spray That Will Give Us Love: On the Hormone that Creates Trust and Neutralizes Suspicion 117
Chapter 14 On Men, Women, and Evolution: Testing the Myths 121
Chapter 15 Make Me a Match Made in Heaven: Reproduction and the Mathematics of Romance 145
Chapter 16 From Cavemen Flutes to Bach Fugues: Why Did Evolution Create Art? 160
Part IV On Optimism, Pessimism, and Group Behavior
Chapter 17 Why Are We So Negative? The Arithmetic of Emotions 167
Chapter 18 On Arrogance and Humility: The Norwegian Professor's Syndrome 173
Chapter 19 Overconfidence and Risk: The "It Can't Happen to Me" Syndrome 178
Chapter 20 The Voice Is Herd: On the Sources of Herd Behavior 189
Chapter 21 Team Spirit: The Paradox of the Generous Bonuses and the Lazy Workers 201
Part V On Rationality, Emotions, and Genes
Chapter 22 Irrational Emotions 219
Chapter 23 Nature or Nurture: What Is the Source of Rational Emotions? 228
Epilogue 233
Notes 239
Index 247