How does risk or uncertainty in the productivity of research affect the growth rate of the economy? To answer this question, a model of endogenous technological change is used where sustained growth stems from intentional investments in R&D from profit-maximizing firms. The uncertainty arises...

The analysis in this paper shows that unpredictable variations in economic productivity may have a positive or negative effect on the average growth rate of output. This theoretical ambiguity result is not solely determined by the value of the elasticity of intertemporal substitution (of...

How does risk or uncertainty in the productivity of research affect the growth rate of the economy? To answer this question, a model of endogenous technological change is used where sustained growth stems from intentional investments in R&D from profit-maximizing firms. The uncertainty arises...

A growth model, in which economic growth is driven by R&D activities, is constructed to analyse issues related to the riskiness of R&D. It is shown that when R&D are risky strongly-risk-averse behaviour may suffocate the potential growth of a closed economy if risk-sharing arrangements are...

The purpose of the present paper is to describe the role of uncertainty and technical change in an environmental context. Which impact does ecological uncertainty have on physical and R&D investments' decisions? How are pollution trajectories modified when uncertainty is taken into account? To...

This paper explores how the regulatory approval process affects innovation incentives in medical technologies. Prior studies have found early mover regulatory advantages for drugs. I find the opposite for medical devices, where pioneer entrants spend 34 percent (7.2 months) longer than follow-on...

The paper develops a dynamic framework for measuring endogenous risk bubbles consistent with debt-deflations; the Systemic Marginal Leverage Index or SysLev. It is symmetrical, proportional, scale invariant, naturally bounded and time dynamic and consistent. These key properties allow the...

The effect of an individual's risk aversion, measured via a series of hypothetical gambles over income, on time to marriage is examined using survival analysis. A search model predicts that, the more risk averse the individual, the shorter the time to first marriage. The estimates support the...

This review article tries to answer four questions: (i) what are the stylized facts about uncertainty over time; (ii) why does uncertainty vary; (iii) do fluctuations in uncertainty matter; and (iv) did higher uncertainty worsen the Great Recession of 2007-2009? On the first question both macro...