In this paper we analyze firms' ability to tacitly collude on pricesin an infinitely repeated duopoly game of vertical productdifferentiation. We show that firms collude if and only if their discountfactor is high enough, i.e. if they value future profits sufficiently. We alsoshow that a lower...

En este trabajo se analiza el papel del aprendizaje en el éxito innovador de las empresas, tomando en consideración la naturaleza heterogénea de las actividades innovadoras, y en particular, distinguiendo entre el aprendizaje que proviene de la realización interna de actividades de I+D y el...

This paper analyses the role of firms' R&D-experience in their innovative success using a representative sample of Spanish firms for the period 1990-2002. Using count data models and within an innovation production function approach, we investigate the influence of firms' R&D-experience in the...

In this paper we provide a general equilibrium model that helps explaining payment choice at the retail level: cash, electronic and paper-based instruments. In particular, it provides theoretical foundations to reconcile previous empirical evidence on this issue. The payment pattern of a given...

According to neoclassical models, economies converge to their steady-states. In this paper we confirm that both significant differences among Spanish regions¿ steady-states and fastconvergence to them exist. We analyse their time stability over the period 1964-93 and their possible...

A model of optimal economic growth with a constant population subject to a constraint on the availability of land is presented. It takes account of the dual character of land as a production factor and as a consumption good (environmental amenities) by determining the optimal intertemporal...

This paper analyzes Spanish economic growth and the effect of interaction between human capital accumulation and sectoral structure. Data show significant differences in sectoral human capital stocks per worker for the period 1965-95. When tested, the effect of human capital, both as an input...

This paper contains an analysis of the economic effects of human capital onproduction, measured as Gross Value Added per full-time equivalent worker. To thisend, a Cobb-Douglas type production function has been used, with Gross Value Added(GVA) a function of human capital and private and public...

This paper aims at studying the interaction between growth of real output and human capital accumulation when education requires investment of physical resources. To this end we investigate the aggregate implications of individual specific uncertainty about returns to investment in education in...

The provision of pensions for the old and public education for the young represent a large share of public budgets. In most Western countries, current Social Security systems are under a big financial stress. Several reforms have been proposed to solve this problem. This paper deals with the...