This paper analyses the potentially defensive behaviour of successful innovators and its effect on aggregate R&D effort. It proposes a quality-ladders model that endogenously determines leader's technology advantages and who innovate (the leader firm or its competitors). Regulation can have...

We use a French firm-level data set containing 13,000 firms over the period 1993-2004 to analyze the relationship between credit constraints and firms' R&D behavior over the business cycle. Our main results can be summarized as follows: (i) the share of R&D investment over total investment is...

We consider an optimal growth model of an economy facing an exogenous pollution quota. In the absence of an international market of pollution permits, the economy has three instruments to reach sustainable growth: R&D to develop cleaner technologies, investment in new clean capital goods, and...

Inscrire la R&D en charges de l'exercice ou à l'actif du bilan est un choix qui s'offre aux dirigeants des entreprises françaises. A travers ce choix, se dessinent deux stratégies managériales différentes, mais non mutuellement exclusives, à savoir diffuser plus d'informations sur les...

Geoengineering, i.e. the use of artificial techniques aiming at cooling the planet, is increasingly considered as a realistic alternative to emission mitigation. Several methods are promising for their capacity to quickly halt global warming at a moderate cost. Such cheap technologies might be...

La question de l'articulation contrôle – confiance a été largement abordée dans la littérature. Dans cette communication, nous traitons de cette articulation dans le cadre particulier des projets portés par un pôle de compétitivité. Les pôles de compétitivité ont vocation à porter...

Evolutionary approaches of the firm devote a part of their analysis to firm behavior and to some processes acting inside the firm , however the internal workings of firms are, most of the time, not deeply analyzed. In this perspective, this paper attemps to investigate whether &quotwe can drop...

R&D and innovation have become much more strategic than ever before for the growth of China as well as for its global societal upgrade. The Chinese authorities have designed an innovation strategy to face new economic and social challenges. The first part of the paper is focused on the emergence...

This paper proposes a model in the spirit of Aghion and al. (2005) that relates the magnitude of the impact of competition on R&D to the cost of innovation. The effect of competition on R&D is an inverted U-shape. However, the shape is flatter and competition policy is therefore less relevant...

Inscrire la R&D en charges ou à l'actif du bilan est un choix qui s'offre aux dirigeants des entreprises françaises. A travers ce choix, se dessinent deux stratégies managériales différentes, mais non mutuellement exclusives, à savoir diffuser plus d'informations sur les investissements en...