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Working Paper
Technology adoption and mortality
We develop a quantitative theory of mortality trends and population dynamics. In our theory, individuals incur time and/or goods costs over their life cycle, to adopt a better health technology that increases their age-specific survival probability. Technology adoption is a source of a dynamic externality: As more individuals adopt the better technology, the marginal benefit of future adoption increases. The allocation of time and/or goods also depends on total factor productivity (TFP): As TFP grows, more resources are allocated to technology adoption. Both channels---the dynamic externality ...
Working Paper
Technology adoption, mortality and population dynamics
We develop a quantitative theory of mortality trends and population dynamics. Our theory emphasizes individual choices on costly adoption of healthy technologies and diffusion of knowledge about infections as a key channel for reducing mortality. Our theory is consistent with three observations on mortality: (i) The cross-country correlation between levels of mortality and income is negative; (ii) mortality in poor countries has converged to that of rich countries despite no convergence in income; and (iii) economic growth is not a prerequisite for mortality to decline. We calibrate our model ...
Briefing
Innovation, Diffusion and Intellectual Property Rights
Our recent working paper studies innovation and diffusion of technology along an industry's evolution and characterizes how diffusion affects the incentives to innovate. In our analysis, firms participate in a competitive industry and face production capacity constraints. The entry of imitators thus increases industry supply and is socially beneficial to a degree. We show that, from the social welfare point of view, innovators should be compensated for intellectual property rights to internalize their knowledge spillovers to imitators. However, such compensation should be only partial due to ...