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Timing and Duration of Exposure in Evaluations of Social Programs

WORLD BANK RESEARCH OBSERVER, no. 1 (2009): 55-82

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Impact evaluations aim to measure the outcomes that can be attributed to a specific policy or intervention. While there have been excellent reviews of the different methods for estimating impact, insufficient attention has been paid to questions related to timing: How long after a program has begun should it be evaluated? For how long sho...更多

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