* Whether a policy that worked in one context will also work in another depends on the interaction of the policy's mechanism with features of the context. This is its "external validity". * Existing methods are helpful for understanding a policy's external validity, but are limited to examining...

A burgeoning area of social science research examines how state capabilities and bureaucratic effectiveness shape economic development. This paper studies how the management practices of civil service bureaucrats correlate to the delivery of public projects, using novel data from the Ghanaian...

A burgeoning area of social science research examines how state capabilities and bureaucratic effectiveness shape economic development. This paper studies how the management practices of civil service bureaucrats correlate to the delivery of public projects, using novel data from the Ghanaian...

A burgeoning area of social science research examines how state capabilities and bureaucratic effectiveness shape economic development. This paper studies how the management practices of civil service bureaucrats correlate to the delivery of public projects, using novel data from the Ghanaian...

With the growing number of impact evaluations worldwide, the question of how to apply this evidence in policy making processes has arguably become the main challenge for evidence-based policy making. How can policy makers predict whether a policy will have the same impact in their context as it...