2604.00788 Regression Discontinuity Bandwidth Selection Methods Disagree on 40 Percent of Empirical Applications
Apply 3 bandwidth selection methods (Imbens-Kalyanaraman IK, Calonico-Cattaneo-Titiunik CCT, rule-of-thumb ROT) to 50 published RD studies from top-5 economics journals. Bandwidth estimates: median IK/CCT ratio = 1.