Book excerpt: Conditional cash transfer programs (CCTs)—cash grants to poor families that are conditional on their participation in education, health, and nutrition services—have become a vital part of poverty reduction strategies in many countries, particularly in Latin America. In Conditional Cash Transfers in Latin America, the contributors analyze and synthesize evidence from case studies of CCTs in Brazil, Honduras, Mexico, and Nicaragua. The studies examine many aspects of CCTs, including the trends in development and political economy that fostered interest in them; their costs; their impacts on education, health, nutrition, and food consumption; and how CCT programs affect social relations shaped by gender, culture, and community. Throughout, the authors identify the strengths and weaknesses of CCTs and offer guidelines to those who design them.