Chapter 1. Introduction: Why a Science of Gratitude.- Part I. The of Gratitude.- Chapter 2. What is Gratitude and can it be Measured?.- Chapter 3. What Causes Gratitude?.- Chapter 4. What Good is Gratitude? Gratitude and Well-Being.- Chapter 5. What are Grateful People Like? Characteristics of Grateful People.-Part II: The How of Gratitude: is Gratitude Related to Well-Being?.- Chapter 6. Does Gratitude Enhance Present Experience?.-Chapter 7. Does Gratitude Enhance Experience of the Past?.-Chapter 8. Does Gratitude Enhance Social Well-Being?.- Chapter 9. Does Gratitude Enhance Coping Ability?.- Chapter 10. Does Gratitude Prevent Negative Affectivity?.- Chapter 11. Does Gratitude Develop?.- Chapter 12. What Inhibits Gratitude?.- Chapter 13. can Gratitude Interventions Be Used to Enhance Well-Being?.- Chapter 14. Conclusion: Explaining Gratitude.