The PSIA approach advocates the integrated use of both quantitative and qualitative methods. Quantitative methods have important limitations in evaluating the poverty-reducing impact of development programs and policies. Many of the challenges that the poor face cannot be meaningfully understood without direct, qualitative reference to the context in which the poor live. Integrating qualitative and quantitative approaches in impact analysis can yield insights that neither approach would generate on its own. This section provides a basic framework for integrating different approaches, based on distinguishing between data and collection methods. It also gives some examples of "mixed method" analysis.
The Research Department of the World Bank provided input on this concept as part of the "Toolkit for Evaluating the Poverty and Distributional Impact of Economic Policies;" the chapter, as well as other information, is available below.
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