The randomized impact evaluation of the National Solidarity Programme (NSP) was designed to rigorously assess the impact of the NSP and test potential refinements to program implementation modalities. The study covered 500 villages in 10 districts in northern, eastern, central, and western Afghanistan. Half of the villages participating in the study were randomly selected to receive NSP in 2007, while the other half served as a control group and did not receive NSP until 2012. The study was supported with assistance from the World Bank, FAO, and Afghanistan's Ministry of Rural Rehabilitation and Development.
The Final Report for the NSP impact evaluation, which reports estimates of the impact of NSP across a broad range of economic, social, and institutional outcomes, was released in August 2013 and may be accessed here. More information about the Wheat Distribution Experiment, which analyzed the specific effects of NSP on local governance, is available here. In addition, the website provides access to all papers and reports completed in the course of the study, to the full set of survey instruments and data from monitoring exercises and the baseline, midline, endline, and wheat distribution surveys, and to videos summarizing key results and photography of the sample districts.