"In advanced economies like the United States, innovation has long been recognized as a central force for increasing socioeconomic prosperity and improving human health. Today, U.S. government policy seeks to promote innovation through a suite of mechanisms, from tax credits in the private...

This paper specifies a general set of conditions under which the impacts of a policy can be identified using data generated under a different policy regime. We show that some of the policy impacts can be identified under relatively weak conditions on the data and structure of a model. Based on...

Against a background of projections of sharply increasing elderly dependency rates, workers in the major industrial economies are apprehensive that their social security benefit entitlements will be cut before or after they retire, leaving them with inadequate retirement income. This paper looks...