This paper builds a model of R&D-based growth in which the discovery of higher-quality products is governedby sequential stochastic innovation contests. Incumbent firms producing state-of-the-art-quality productsexpend resources in activities to protect their rents; challengers raise claims to...

A common assumption in the Schumpeterian growth literature is that the innovation size is constant and identical across industries. This is in contrast with the empirical evidence which shows that: (1) innovation size is not identical across industries and (2) the size distribution of profit...

This chapter examines the contributions that economists have made to the study of science and the types of contributions the profession is positioned to make in the future. Special emphasis is placed on the public nature of knowledge and characteristics of the reward structure that encourage the...