Why is R&D spending so low in Spanish firms? One possible answer may lie in a small contribution of innovative investments to value creation at the firm level. When pulling together complementary sources of spending data and related evidence to measure these investments, we observe that R&D is...

En este artículo se discute el papel que juega la edad del capital en el crecimiento económico. Con este objetivo revisamos algunos resultados al respecto en modelos de crecimiento endógeno en los que el capital físico es heterogéneo por razón de la edad (vintage capital). Cuando las...

In this paper, we build up a general equilibrium model explicitly incorporating Schumpeterian growth à la Aghion and Howitt (1992) and a vintage capital structure in line with Solow (1960). Technological progress is embodied. We show that the investment rate is a fundamental determinant of the...

We provide a simple theory of in.ation inertia in a staggered price setting framework a la Calvo (1983). Contrary to Calvo.s formulation, the frequency of price changes is allowed to vary according to an evolutionary criterion. Inertia is the direct result of gradual adjustment in this frequency...

This paper analyzes the equilibrium dynamics of and optimal growth model that incorporates endogenous depreciation, variable capital utilization, and expenditures on the maintenance of physical capital. Maintenance acts as a substitute for investment, since it reduces the depreciation of...

This paper examines how a scrappage subsidy affects the lifetime of durable goods when secondhand markets are present. To this end, we propose a vintage model to analyze the replacement decision in an economy in which high and low income agents trade on a durable good. Thus, the existence of a...