Causal Inference in Complex Systems: Network Interference, Strategic Agents, and Beyond
summary
Argues that exact, finite-sample Fisher randomization test methods handle network interference by testing exposure contrasts (e.g., control spillovers vs pure control) instead of unit-level treatments, and introduces the null exposure graph whose biclique structure identifies imputable unit–assignment pairs. Application to a Medellín policing experiment shows focal-unit selection and throwing away non-imputable data are necessary tradeoffs, and the same graph view guides experimental design (maximize biclique size). Also reports minimax designs for temporal habituation where imbalanced randomized assignments perform best.
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chapters (7)
- 0:00Start
- 0:50Introduction
- 2:37Crime spillovers in Medellin, Colombia
- 4:44Treatment habituation/Learning
- 9:16Causal Inference
- 16:43Design-based approach
- 44:32Spin-off 2: Improving the experimental design
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