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Measuring impact II : Impact evaluation methods for policy makers

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Frame of Image nk.org/ieinpractice). The content of this presentation reflects the views of the authors and not necessarily those of the World Bank.
Counterfactuals Incorrect Counterfactuals
Before & After (Pre & Post)
Causal
Inference
Enrolled & Not Enrolled
(Apples & Oranges)
Randomized Assignment Randomized Promotion Discontinuity Design
Difference-in-Differences Diff-in-Diff
Matching
P-Score matching
IE Methods
Toolbox
Randomized Assignment Randomized Promotion Discontinuity Design
Difference-in-Differences Diff-in-Diff
Matching
P-Score matching
IE Methods
Toolbox
What if we can’t choose?
It’s not always possible to choose a control group. What about:
o National programs where everyone is eligible? o Programs where participation is voluntary? o Programs where you can’t exclude anyone?
Can we compare Enrolled & Not Enrolled?
Selection Bias!
Randomly offering or promoting program
o o o Offer the program to a random sub-sample Many will accept Some will not accept
If you can exclude some units, but can’t force anyone: Randomized offering
If you can’t exclude anyone, and can’t force anyone:
o o Make the program available to everyone But provide additional promotion, encouragement or incentives to a random sub-sample:
Additional Information. Encouragement. Incentives (small gift or prize). Transport (bus fare).
Randomized promotion
Randomly offering or promoting program
Necessary conditions:
1. Offered/promoted and not-offered/ not-promoted groups are comparable:
o Whether or not you offer o


Full Text
Title Measuring impact II
Similar Titles
Sub Title

Impact evaluation methods for policy makers

Material Type Proceedings
Author(English)

Benedicte de la Briere; Chaudhury, Nazmul

Publisher

[Washington, DC] : The World Bank

Date 2012
Event

The Regional Impact Evaluation Workshop

Event [Workshop] Evaluating the Impact of Development Programs
Pages 60
Language English
File Type Documents
Original Format pdf
Subject Official Aid < Others
Holding KDI; KDI School
License

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