Showing 1 - 10 of 19
We report a puzzling pair of facts concerning the organization of science. The concentration of research output is declining at the department level but increasing at the individual level. For example, in evolutionary biology, over the period 1980 to 2000, the fraction of citation-weighted...
Persistent link: https://www.econbiz.de/10012459010
We examine the relationship between product liability litigation and innovation by systematically combining data on …
Persistent link: https://www.econbiz.de/10014512069
The recruitment of foreign scientists enhances US science through an expanded workforce but could also cause harm by displacing better connected domestic scientists, thereby reducing localized knowledge spillovers. We develop a model in which a sufficient condition for the absence of overall...
Persistent link: https://www.econbiz.de/10012453197
We examine how the spatial and social proximity of inventors affects knowledge flows, focusing especially on how the two forms of proximity interact. We develop a knowledge flow production function (KFPF) as a flexible tool for modeling access to knowledge and show that the optimal spatial...
Persistent link: https://www.econbiz.de/10012465834
The rate of university patenting increased dramatically during the 1980s. To what extent did the knowledge flow patterns associated with public sector inventions change as university administrators and faculty seemingly became more commercially oriented? Using a Herfindahl-type measure of patent...
Persistent link: https://www.econbiz.de/10012466021
We conduct the first empirical test of the knowledge burden hypothesis, one of several theories advanced to explain increasing team sizes in science. For identification, we exploit the collapse of the USSR as an exogenous shock to the knowledge frontier causing a sudden release of previously...
Persistent link: https://www.econbiz.de/10012458968
We model a key step in the innovation process, hypothesis generation, as the making of predictions over a vast …, they use artificial intelligence (AI) instead. We model innovation as resulting from sequential search over a combinatorial … innovation outcomes of interest - the probability of innovation, expected search duration, and expected profit. We describe …
Persistent link: https://www.econbiz.de/10014337792
Liability laws designed to compensate for harms caused by defective products may also affect innovation. We examine … negative impact on downstream innovation in medical implants, but it had no significant effect on upstream polymer patenting … effect on downstream innovation …
Persistent link: https://www.econbiz.de/10012480719
Innovation is often predicated on discovering useful new combinations of existing knowledge in highly complex knowledge …
Persistent link: https://www.econbiz.de/10012453175
" about future performance and standard measures of corporate innovation. We begin by developing a career concern model where … probability of failure, are more likely to pursue innovation, and that this effect is larger in more competitive industries. We …
Persistent link: https://www.econbiz.de/10012462611