We propose a new specification test for assessing the validity of fuzzy regression discontinuity designs (FRD‐validity). We derive a new set of testable implications, characterized by a set of inequality restrictions on the joint distribution of observed outcomes and treatment status at the...

There are many economic parameters that depend on nonparametric first steps. Examples include games, dynamic discrete choice, average exact consumer surplus, and treatment effects. Often estimators of these parameters are asymptotically equivalent to a sample average of an object referred to as...

East Asia is undergoing a rapid demographic transition and "super" aging. As a result of steadily decreasing fertility and increasing life expectancy, older people's proportion of the population and the old-age dependency ratio is rising across all countries in East Asia, particularly in the...