Provides analysis of how the field of international aid is changing with new approaches necessary because of new actors providing assistance, including middle-income countries, private philanthropists, and the private sector, and new challenges, including climate change and the large number of...

This paper extends the literature on the evolution of norms with an agent-based model capturing a phenomenon that has been essentially ignored, nam ely that individual thought -- or computing -- is often inversely related to the strength of a social norm. In this model, agents learn how to...

The effects of distinct agent interaction and activation structures are compared and contrasted in several multi-agent models of social phenomena. Random graphs and lattices represent two limiting kinds of agent interaction networks studied, with so-called 'small-world' networks being an...

We consider processes in which norms of behavior are transmetted through social of geographic networks.Agents adopt behaviors based on a combination of their inherent payoff and their local popularity (the number of neighbors who have adopted them) subject to some random error. Extending work of...