Leaders, elites, and the media may put ideas on the shelf, but that doesn’t mean people will buy them. And when they do, it may often be best to conclude that the message has struck a responsive chord rather than that the public has been manipulated

An important goal when analyzing the causal effect of a treatment on an outcome is to understand the mechanisms through which the treatment causally works. We define a causal mechanism effect of a treatment and the causal effect net of that mechanism using the potential outcomes framework. These...

Researchers regularly use synthetic control methods for estimating causal effects when a sub-set of units receive a single persistent treatment, and the rest are unaffected by the change. In many applications, however, units not assigned to treatment are nevertheless impacted by the intervention...