| 내용 |
Why natural experiments? - Standard natural experiments - Regression-discontinuity designs - Instrumental-variables designs - Simplicity and transparency: keys to quantitative analysis - Estimating variability: sampling processes and standard errors - The central role of qualitative evidence - How plausible is as-if random? - How credible is the model? - How relevant is the intervention? - Building strong research designs through multi-method.
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