We study a dynamic general equilibrium model where innovation takes the form of the introduction new goods, whose … production requires skilled workers. Innovation is followed by a costly process of standardization, whereby these new goods are … substitution between goods and other parameters. Third, we show that the interplay between innovation and standardization may lead …

Innovation is often predicated on discovering useful new combinations of existing knowledge in highly complex knowledge …, and particle physics. We develop a combinatorial-based knowledge production function and embed it in the classic Jones …. This production function is a generalization (and reinterpretation) of the Romer/Jones knowledge production function …

location, which has been taken as evidence of geographically localized knowledge spillovers. In this study, we find that patent … in question, which we interpret as evidence of a significant role played by social capital in promoting knowledge … find strong evidence in support of the enduring social capital hypothesis; social ties that facilitate knowledge transfer …

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 …

established knowledge. When recent advances create superior opportunities for invention, their adoption as research inputs in the … limited, due to the undeveloped nature of new knowledge, quick obsolescence of fast-improving knowledge, and the vast scope of … the existing knowledge base. In this paper, we first develop a new approach to identifying research inputs in invention …

an induced innovation externality. This alternative mechanism, by contrast, causes people to devote an inefficiently high … level of self-protection. As an empirical example of this externality, we analyze the innovation induced by the obesity … epidemic. Obesity is associated with an increase in the incidence of many diseases. The induced innovation hypothesis is that …

The extant literature linking slack time to innovation focuses on how slack time facilitates creative activities such … are less creative but still important for innovation, namely mundane, execution-oriented tasks. First, we document the …, we report timing and project type evidence consistent with the causal interpretation that slack time drives innovation …

interplay of these two localized externalities and their impact on regional innovation. We examine MSA-level patent data during … the period 1975-2000 and find that innovation output is higher where large and small labs coexist. The finding is robust …

opportunities. The paper also provides new evidence on induced pharmaceutical innovation. In both cases we use the change in the … demographic structure of the market (measured by age structure and obesity prevalence) to test the induced innovation hypothesis … pharmaceutical innovation responds to aging- and obesity-induced changes in potential market size …