We extend the basic Schumpeterian endogenous growth model by allowing incumbents to undertake innovations to improve their products, while entrants engage in more “radical” innovations to replace incumbents. Our model provides a tractable framework for the analysis of growth driven by both...

Recent empirical studies suggest a need for a ?exible patent regime responding to industry characteristics. In practice, sector-speci?c modi?cations of patent strength already exist but lack theoretical foundation. This paper intends to make up for this neglect by scrutinizing in what direction...

This paper presents the problem of satiation of consumption and technology in relation to a model of evolutionary endogenous growth. The model represents an attempt to provide an evolutionary economic micro foundation to Pasinetti's scheme of the structural economic dynamics of an economy that...

We study how exploration versus exploitation innovations impact economic growth through a tractable endogenous growth framework that contains multiple innovation sizes, multi-product firms, and entry/exit. Firms invest in exploration R&D to acquire new product lines and exploitation R&D to...

The influence of product market competition on growth is reconsidered by developing an extension of the basic Romerian model of horizontal product innovation. We find that the relationship between competition and growth is inverse-U shaped, provided that the non accumulated factor input (e.g....

This paper overviews the main interactions between product market competition and long run growth.We focus on the first generation of R&D-based growth models and keep distinguished the vertical from the horizontal differentiation approaches. Our main objective is to study why these two branches...

This paper studies the economic determinants of the inter-sectoral allocation of skills within an R&Dbased growth model with human capital accumulation and imperfect competition. Using an aggregateR&D technology displaying constant returns to scale in human capital, I find that steady-state...

We build an expanding product variety endogenous growth model where both human capital and ideas are complements. One peculiarity of the economy under analysis is that in the sectors where both kinds of capital are accumulated no spillover effect does exist. Many insights arise from the model....

In this paper, we build a general model of horizontal product innovation and economic development, taking explicitely into account the most relevant insights stemming from the recent literature on this topic. What results from our analysis is that, when innovation is both deterministic and...