This chapter reviews academic research on the connections between agglomeration and innovation. We first describe the … conceptual distinctions between invention and innovation. We then describe how these factors are frequently measured in the data …, industrial diversity) that theoretical and empirical work link to innovation, and we discuss factors that help sustain these …

-by-step innovation. Innovations result from costly R&D investments and move technology up one step. Competition is inversely measured by …-and-neck. All these results are consistent with the predictions of step-by-step innovation models …

Innovation policy can be a crucial component of governments' responses to crises. Because speed is a paramount … objective, crisis innovation may also require different policy tools than innovation policy in non-crisis times, raising … distinct questions and tradeoffs. In this paper, we survey the U.S. policy response to two crises where innovation was crucial …

more than 40%. Drawing upon the economics of science and innovation literature, we highlight three primary channels through …

We document that monetary policy has a substantial impact on innovation activities. After a tightening shock of 100 …-based aggregate innovation index, declines by up to 9 percent in the following 2 to 4 years. Based on previous estimates of the … sensitivity of output to innovation activities, these magnitudes imply that output could be 1 percent lower after another 5 years …