This book is structured in four sections. Section 1 looks at the issues related to theoretical and methodological considerations. Chapter 1 to 5 deal with gaps in measuring effectiveness of development aid programs including issues related to evaluability assessment, outcome mapping and sustainability (Chapter 1), perspective in measuring effectiveness (chapter 2), the application of narrative and dialogue methods in defining and redefining effectiveness (chapter 3), the role of economic modelling in measuring the impact and effectiveness of aid programs (chapter 4) and the outline of how the effectiveness of HIV prevention is currently being measured at a global level, and the requirements at local and national levels (chapter 5). Section two looks at principles and practice with some case studies. Chapter 6, selling humanitarian emergencies to the media, focuses on the relationship between journalists and aid workers and suggests practical strategies relief agencies can take to raise the media profile.