The World Development Report 2011 on conflict, security and development will look at conflict as a challenge to economic development. It will analyze the nature, causes and development consequences of modern violence and highlight lessons learned from efforts to prevent or recover from violence....

Every policy relies on explicit or implicit assumptions about how people make choices. Those assumptions typically rest on an idealized model of how people think, rather than an understanding of how everyday thinking actually works. This year’s World Development Report argues that a more...