This book is open access under a CC BY-NC-ND license. This volume analyzes the economic, social, and political challenges that emerging states confront today. Notwithstanding the growing importance of the ‘emerging states’ in global affairs and governance, many problems requiring immediate...

Historically, urban growth required enough development to grow and transport significant agricultural surpluses or a government effective enough to build an empire. But there has been an explosion of poor mega-cities over the last thirty years. A simple urban model illustrates that in closed...

We present a graphical framework for analyzing both theoretical and empirical work on selection in insurance markets. We begin by using this framework to review the "textbook" adverse selection environment and its implications for insurance allocation, social welfare, and public policy. We then...

Why do low-income individuals often oppose redistribution? We hypothesize that an aversion to being in "last place" undercuts support for redistribution, with low-income individuals punishing those slightly below themselves to keep someone "beneath" them. In laboratory experiments, we find...

Eleven percent of the Malawian population is HIV infected. Eighteen percent of sexual encounters are casual. A condom is used one quarter of the time. A choice-theoretic general equilibrium search model is constructed to analyze the Malawian epidemic. In the developed framework, people select...

For an economy with altruistic parents facing productivity shocks, the optimal estate taxation is progressive: fortunate parents should face lower net returns on their inheritances. This progressivity reflects optimal mean reversion in consumption, which ensures that a long-run steady state...

This paper examines how child maltreatment is affected by the economic circumstances of parents. 'Child maltreatment' encompasses a wide range of behaviors that adversely affect children. It includes neglect, physical abuse, sexual abuse, and other forms of abuse or neglect. Using state-level...

This paper uses a variety of individual-level survey data from several countries to test for interactions between subjective well-being at different ages and variables measuring the nature and quality of the social context at work, at home, and in the community. While earlier studies have found...

We use a rich new body of data on the experiences of unemployed jobseekers to determine the sources of wage dispersion and to create a search model consistent with the acceptance decisions the jobseekers made. Heterogeneity in non-wage job values or amenities among jobseekers and jobs is a...