On January 25, 2019, Adam Glynn (Associate Professor of Political Science, Emory University) visited the Department of Political as part of its Political Science and Research Workshop (PSRW). Glynn presented a method for correcting for unmeasured confounding through difference-in-difference-in-differences. In studies that involve nonrandomized samples, estimates can be biased by unobserved relationships between the treatment and other covariates. Building on a quantile-based approach to estimating difference-in-differences and the use of placebo outcomes in place of pre-treatment measurement, Glynn demonstrated how to use surrogate outcomes to estimate potential bias. The talk outlined an application that examined the effect of exposure to candidate debates on political efficacy in Nepal based on work with Nahomi Ichino.