An economic efficiency analysis of deconcentrating poverty populations

This paper presents a comparative static analysis using a conceptual model of the social benefits and costs associated with alternative spatial distributions of the poor. This analysis demonstrates that the necessary and sufficient conditions for justifying deconcentration of the poor on the grounds of increasing net social benefits are much more stringent than is commonly believed, fundamentally involving particular sorts of non-linear relationships between neighborhood poverty rates and the propensity of neighboring individuals to engage in problem behaviors and to earn less. The paper then conducts a meta-analysis of the limited empirical evidence available. The weight of the evidence implies that net social benefits would be improved if neighborhoods with greater than about 15% poverty rates were replaced with (an appropriately larger number) of neighborhoods having less than 15% poverty rates. However, net social benefits would be smaller if neighborhoods with greater than about 40% poverty rates were replaced with (an appropriately larger number) of neighborhoods having between about 15–40% poverty rates.