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David McKenzie's blog

Links of the week: The impact of the global gag order, taking your husband’s name, zapping cash, and more…

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·         The impact of George Bush cutting funding to all NGOs operating abroad that provide or counsel women on abortion was actually to increase abortion rates according to new research by Stanford researchers – the hypothesized channel is through a reduction in the availability of birth control.

Using Sending Country Surveys as a Basis for Sampling Immigrants: A cautionary tale

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International migration is the most effective action that people in developing countries can take to increase their incomes and well-being. Yet our ability to learn about the policies that enhance or inhibit the gains to migration is severely restricted due to the poor state of migration data. One element of this is the lack of representative surveys of immigrants.

Moving from Internal to External Validity – and problems with Partner Selection Bias

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When done well, randomized experiments at least provide internal validity – they tell us the average impact of a particular intervention in a particular location with a particular sample at a particular point in time. Of course we would then like to use these results to predict how the same intervention would work in other locations or with other groups or in other time periods.

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