Whatever the debate about its nature and causes, almost all observers would agree that inner-city poverty is multidimensional, extraordinarily complex, and difficult to under- stand. Various disciplines and policy frameworks give rise to very different notions of poverty and of its sources. To economists, it is an issue of labor markets, productivity, incentives, human capital, and choice. Sociologists and anthropologists tend to emphasize social status and relations, behavior, and culture. For social psychologists, the issues may include self-image, group membership, and attitudes. For political scientists, the questions may focus on group power and access to collective resources. City planners and urbanists see the effects of urban structure, isolation,.