POLS 208 Lecture Notes - Lecture 15: Regression Discontinuity Design, Causal Inference, Covariate
5 Dec 2018
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Rd design is for differences with very narrow margins. Reasonable to argue that those right below the cutoff are very similar to those right above. You have to assume they"re similar **by chance. Once you reach 11, there"s a jump in the probability of receiving an award. Observed outcomes as a function of test scores. There"s no difference between points in the bottom two lines. **the jump is the causal effect in receiving an award to getting a scholarship for. Potential and observed outcomes in rd designs college. Assuming we can use observed control group as a proxy of unobserved control group. Observed treatment group as a proxy of unobserved treatment group. The basic intuition: the cut off point. The assignment ot treatment is determined either completely or partly by the value of a covariate, xi, being on either side of a fixed threshold.
