Competition and Growth: Reconciling Theory and Evidence

Philippe Aghion, Rachel Griffith

This section selects books on themes related to competition laws and economics. This compilation does not attempt to be exhaustive but rather a survey of themes important in the area. The survey usually covers publication over the last three months after publication of the latest issue of Concurrences. Publishers, authors and editors are welcome to send books to for review in this section.

Though competition occupies a prominent place in the history of economic thought, among economists today there is still a limited, and sometimes contradictory, understanding of its impact. In Competition and Growth, Philippe Aghion and Rachel Griffith offer the first serious attempt to provide a unified and coherent account of the effect competition policy and deregulated entry has on economic growth.

The book takes the form of a dialogue between an applied theorist calling on ""Schumpeterian growth"" models and a microeconometrician employing new techniques to gauge competition and entry. In each chapter, theoretical models are systematically confronted with empirical data, which either invalidates the models or suggests changes in the modeling strategy. Aghion and Griffith note a fundamental divorce between theorists and empiricists who previously worked on these questions. On one hand, existing models in industrial organization or new growth economics all predict a negative effect of competition on innovation and growth: namely, that competition is bad for growth because it reduces the monopoly rents that reward successful innovators. On the other hand, common wisdom and recent empirical studies point to a positive effect of competition on productivity growth. To reconcile theory and evidence, the authors distinguish between pre- and post-innovation rents, and propose that innovation may be a way to escape competition, an idea that they confront with microeconomic data. The book’s detailed analysis should aid scholars and policy makers in understanding how the benefits of tougher competition can be achieved while at the same time mitigating the negative effects competition and imitation may have on some sectors or industries.


  • Collège De France (Paris)
  • University of Manchester


Philippe Aghion, Rachel Griffith, Competition and Growth: Reconciling Theory and Evidence, December 2005, Concurrences N° 4-2005, Art. N° 110422

Publisher MIT Press

Date 1 July 2005

Number of pages 120

ISBN 9780262012188

Visites 86

All reviews