"This inter-disciplinary project adopts experimental and structural methodologies to study 1. sustainability and impacts of mechanisms to deliver health-protecting technologies to poor populations in developing countries; 2. methodological advances to understand health-related decision-making and behavior in such populations. The specific empirical framework is the uptake, usage and impacts on malaria indices of insecticide-treated bednets (ITNs) in rural Orissa (India).Component 1. has four specific aims. First, evaluate to what extent consumer loans increased ITN ownership and usage in a cost-effective way, using data from the first randomized controlled trial where health-protecting technologies were provided at full cost but on credit, as compared to control conditions or free distribution. Second, evaluate the impacts of the alternative delivery mechanisms on clinically measured malaria indices. Third, contribute to a new literature that analyzes to what extent the fact itself of being surveyed can change behavior, possibly confounding the impact evaluation of policies. Fourth, evaluate the nature and extent of spillovers of the interventions on non-beneficiary households.Component 2. of the project adopts a dynamic discrete choice structural approach, adding novel identification results, to gauge whether preferences that are present-biased matter, in the study population, when households make decisions that may affect health in important ways."