Introduction: Why a science of gratitude?
What is gratitude and how can it be measured?
What are grateful people like? Characteristics of grateful people
Does gratitude enhance experience of the present?
Does gratitude enhance experience of the past?
Does gratitude enhance social well-being?
Does gratitude enhance coping ability?
Does gratitude prevent negative affectivity?
How does gratitude develop?
How can gratitude interventions be used to enhance well-being?
Conclusion: Explaining gratitude.