We consider a linear growth model with idiosyncratic productivity shocks in whichproducers cannot commit to repay their loans. Borrowing constraints are determinedendogenously by the borrowers’ incentives to repay, assuming that defaulters lose a shareof output and are excluded from future...

This paper proposes a theory for the gradual evolution of knowl-edge diffusion and growth over the very long run. A feedback mechanismbetween capital accumulation and the ease of knowledge diffusion explains along epoch of (quasi-) stasis and an epoch of high growth linked by a grad-ual economic...

Previous research on optimal R&D subsidies has focussed on the long run.This paper characterizes the optimal time path of R&D subsidization in a semi-endogenous growth model, by exploiting a recently developed numerical method.Starting from the steady state under current R&D subsidization in the...

The intellectual breakthrough contributed by the new growth theory was the recognition that investments in knowledge and human capital endogenously generate economic growth through the spillover of knowledge. Endogenous growth theory does not explain how or why spillovers occur. The missing link...

Skill-biased technical change has occupied empirical economists for much of the 90s. However, the empirical literature has not progressed much beyond observing a positive correlation between technology indicators and demand shifts. Two hypotheses on the root causes of skill biases in technical...

We discuss long-run growth in an economy which is subject toaggregate productivity shocks affecting all factors of production. Wedemonstrate that the presence of labor income risk unambiguously isan important determinant of long-run expected growth. The issue ofdynamic inefficiency of the...

Schumpeter’s and Hayek’s view of market coordination as being not aboutefficiency, but about endogenous change and never-ending discovery has beenincreasingly recognized even by the mainstream of economics. Underlying this view isthe notion of creative learning agents who bring about...