<span>This article examines the theoretical foundations upon which the rationale for mixed-income development as a strategy to confront urban poverty is built. The authors focus on four propositions that draw from theories on social networks, social control, culture and behavior, and the political economy of place. They assess available evidence about the relative importance of the four theoretical </span><span>propositions. They conclude that the most compelling propositions are those that suggest that some low-income residents may benefit from a higher quality of life through greater informal social control and access to higher quality services. They find less evidence that socioeconomic outcomes for low-income residents may be improved through social interaction, network building, and role modeling.</span>
