The book is both a manual for those responsible for writing, managing and evaluating social development projects and a critical review of the existing literature and the practice of the international and multilateral development organizations and the foundations and NGO's of the third sector. Starting with a discussion of the logical framework and its derivatives and of the issue of social participation, it moves on to consider the logic of impact evaluation, sampling procedures and statistical analysis in impact evaluation (relating required sample size to impact targets), the steps in writing and evaluating social projects (focusing on cost-impact analysis), and the broader context of accountability and "reinventing government," as well as the literature on learning organizations. It closes with a demonstration of why "scientific" impact analysis of social projects and programs is both possible and desirable. While the subject matter of the book is at times rather advanced, the style is clear and the reasoning easy to follow. Thus the book is appropriate both for professional evaluators and for those who need to know enough about evaluation methods to be able to write a project or develop a program that will be able to produce measurable social impacts. Translations will soon be published in Spanish and Portuguese.

