Creator: Grossman, Gene M. and Helpman, Elhanan Series: International perspectives on debt, growth, and business cycles Abstract:
We construct a model of the product cycle featuring endogenous innovation and endogenous technology transfer. Competitive entrepreneurs in the North expend resources to bring out new products whenever expected present discounted value of future oligopoly profits exceeds current product development costs. Each Northern oligopolist continuously faces the risk that its product will be copied by a Southern imitator, at which time its profit stream will come to an end. In the South, competitive entrepreneurs may devote resources to learning the production processes that have been developed in the North. There too, costs (of reverse engineering) must be covered by a stream of operating profits. We study the determinants of the long-run rate of growth of the world economy, and the long-run rate of technological diffusion. We also provide an analysis of the effects of exogenous events and of public policy on relative wage rates in the two regions.
关键词: Technological change, North-South trade, Long-run growth, Product cycles, Imitation, and Innovation 学科: F11 - Trade - Neoclassical models of trade, O33 - Technological change ; Research and development - Technological change : Choices and consequences ; Diffusion processes, and F41 - Macroeconomic aspects of international trade and finance - Open economy macroeconomics
Creator: Luttmer, Erzo G. J. Series: Working paper (Federal Reserve Bank of Minneapolis. Research Department) Number: 672 Abstract:
Suppose firms are subject to decreasing returns and permanent idiosyncratic productivity shocks. Suppose also firms can only stay in business by continuously paying a fixed cost. New firms can enter. Firms with a history of relatively good productivity shocks tend to survive and others are forced to exit. This paper identifies assumptions about entry that guarantee a stationary firm size distribution and lead to balanced growth. The range of technology diffusion mechanisms that can be considered is greatly expanded relative to previous work. High entry costs slow down the selection process and imply slow aggregate growth. They also push the firm size distribution in the direction of Zipf’s law.
关键词: Productivity, Selection, Imitation, and Diffusion 学科: O30 - Innovation; Research and Development; Technological Change; Intellectual Property Rights: General and L10 - Market Structure, Firm Strategy, and Market Performance: General