This paper investigates a possibly fundamental aspect of technological progress. If knowledge accumulates as technology advances, then successive generations of innovators may face an increasing educational burden. Innovators can compensate through lengthening educational phases and narrowing expertise, but these responses come at the cost of reducing individual innovative capacities, with implications for the organization of innovative activity—a greater reliance on teamwork—and negative implications for growth. Building on this “burden of knowledge” mechanism, this paper first presents six facts about innovator behaviour. I show that age at first invention, specialization, and teamwork increase over time in a large micro-data set of inventors. Furthermore, in cross-section, specialization and teamwork appear greater in deeper areas of knowledge, while, surprisingly, age at first invention shows little variation across fields. A model then demonstrates how these facts can emerge in tandem. The theory further develops explicit implications for economic growth, providing an explanation for why productivity growth rates did not accelerate through the 20th century despite an enormous expansion in collective research effort. Upward trends in academic collaboration and lengthening doctorates, which have been noted in other research, can also be explained in this framework. The knowledge burden mechanism suggests that the nature of innovation is changing, with negative implications for long-run economic growth

Empirical studies on the relationship between shareholder litigation and corporate disclosure obtain mixed results. We develop an economic model to capture the endogeneity between disclosure and litigation. Equilibrium disclosure is determined by two countervailing effects of litigation, a deterrence effect and an insurance effect. We derive four key results. (i) Decreasing litigation risk leads to less disclosure of very bad news, due to a weakening of the deterrence effect, but to more disclosure of weakly bad news, due to a weakening of the insurance effect. (ii) Given a sufficiently large information asymmetry, litigation risk dampens (boosts) overall disclosure of bad news for low (high) litigation risk firms. (iii) Capital markets respond more to the disclosure of bad news than of good news if the deterrence effect is strong, which arises if both insiders’ penalties and litigation risk are high. (iv) In an extension, we highlight real effects of litigation on corporate innovation and establish that innovation first decreases and then increases (strictly decreases) with litigation risk if insiders’ penalties are small (large). We reconcile our findings with results from a large set of U.S.-based empirical studies and make several novel predictions

We develop a quantifiable general equilibrium model of trade and multinational production (MP) in which countries can specialize in innovation or production. Home market effects or comparative advantage leads some countries to specialize in innovation and relegate manufacturing operations to other countries via outward MP. Counterfactual analysis reveals that the reduction in the cost of MP or the integration of China into the world economy may hurt countries that are driven to specialize in production, although these losses tend to be very small. Contrary to popular fears, production workers gain even in countries that further specialize in innovation

Elevated levels of government debt raise concerns about their effects on long-term growth prospects. Using the cross-section of US stock returns, we show that (i) high-R&D firms are more exposed to government debt and pay higher expected returns than low-R&D firms, and (ii) higher levels of the debt-to-GDP ratio predict higher risk premiums for high-R&D firms. Furthermore, rises in the cost of capital for innovation-intensive firms predict declines in subsequent productivity and economic growth. We propose a production-based asset pricing model with endogenous innovation and fiscal policy shocks that can rationalize key aspects of the empirical evidence. Our study highlights a novel and distinct risk channel shaping the link between government debt and future growth

Using hand-collected data from Form Ds on executives in venture capital (VC)-backed private firms, I show that VC-driven top management changes lead to a significantly greater quantity and quality of innovation, which potentially occurs through new management teams hiring more and higher quality inventors. My evidence demonstrates that both founder replacements and non-founder management changes are associated with enhanced innovation. Further, adding top managers with general managerial skills enhances innovation, whereas changing managers with a prior technical background does not. Finally, top management changes lead to the adoption of an exploitative (rather than explorative) innovation search strategy by private firms

[We present a model suggesting that innovative output is influenced by R&D and market structure characteristics. Based on a new and direct measure of innovation, we find that (1) the total number of innovations is negatively related to concentration and unionization, and positively related to R&D, skilled labor, and the degree to which large firms comprise the industry; and (2) these determinants have disparate effects on large and small firms

The debate between the North and the South about the enforcement of intellectual property rights is examined within a dynamic general equilibrium framework in which the North invents new products and the South imitates them. A welfare evaluation of a policy of tighter intellectual property rights is provided by decomposing its response into four items: (1) terms of trade; (2) production composition; (3) available products; and (4) intertemporal allocation of consumption The paper proceeds in stages. It begins with an exogenous rate of innovation in order to focus on the first two elements. The following two components are added by endogenizing the rate of innovation. Finally, foreign direct investment is added to the model

Reviews the book "Return on Investment: Practical Theory and Innovative Applications," by Robert A. Peters

The authors analyze a dynamic North-South model of innovation, technology transfer, and trade. Northern firms conduct R&D using labor, which has alternative uses producing in the R&D sector or a nontraded good sector. Since technology trans fer prevents the North from fully appropriating benefits of R&D, the optimal rate of innovation for either profit-maximizing firms or a ut ility-maximizing northern planner is less than globally optimal. An i nceased transfer rate intensifies competition of lower wage southern workers with northern workers in production, so profit-maximizing Nor thern firms reallocate labor toward R&D

This study investigates why newly listed firms become M&A targets shortly after their initial public offering (IPOs) from the perspective of product innovation. We find strong empirical evidence that IPOs with less established trademarks increase the likelihood of becoming IPO targets. We also find that the negative relation between established trademarks and the likelihood of becoming IPO targets is more pronounced in highly competitive industries and is primarily driven by the M&A supply side. IPOs with more established trademarks can fend themselves against the product market race as independent firms. They can meanwhile realize superior post-IPO financial as well as innovation performance. To acquire such firms, acquirers need to offer substantially higher takeover premiums. However, some empirical evidence suggests that less product innovation-intensive IPOs tend to deliberately seek potential acquirers to support their product market competing position and therefore are more likely to initiate an M&A deal shortly after going public