Can We Trust Shoestring Evaluations?

March 8, 2012, 1:24 p.m.

The World Bank Development Research Group has published a new paper examining the effectiveness of "shoestring" methods of impact evaluation.  The term "shoestring" refers to evaluations that, in the absence of pre-treatment baseline data, collect retrospective subjective questions on how outcomes have changed.  The paper finds that these post-treatment only evaluations are insufficient for measuring impact.

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