Risultati della ricerca
Creator: Mitchell, Matt Series: Staff report (Federal Reserve Bank of Minneapolis. Research Department) Number: 269 Abstract:
Many manufacturing industries, including the computer industry, have seen large increases in productivity growth rates and have experienced a reduction in average establishment size and a decrease in the variance of the sizes of plants. A vintage capital model is introduced where learning increases productivity on any given technology and firms choose when to adopt a new vintage. In the model, a rise in the rate of technological change leads to a decrease in both the mean and variance of the size distribution.
Parola chiave: Plant Size, Technological Change, and Productivity Growth Soggetto: L60 - Industry Studies: Manufacturing: General, L11 - Production, Pricing, and Market Structure; Size Distribution of Firms, and O30 - Innovation; Research and Development; Technological Change; Intellectual Property Rights: General
Creator: Holmes, Thomas J. and Schmitz, James Andrew Series: Staff report (Federal Reserve Bank of Minneapolis. Research Department) Number: 245 Abstract:
There is an old wisdom that reductions in tariffs force changes on producers that lead to costless, or nearly so, increases in productivity. We construct a technology-ladder model that captures this wisdom. As in other technology-ladder models, time spent in research helps propel an industry up a technology-ladder. In contrast to the literature, we include another activity that plays a role in determining an industry's position on the technology-ladder: attempts to obstruct the research program of rivals (through regulations, for example). In this world, reductions in tariffs between countries lead producers to spend more time in research and less in obstruction of rivals.
Parola chiave: Technology-ladder models, Effects of protection, and Gains from trade Soggetto: F10 - Trade: General, O40 - Economic Growth and Aggregate Productivity: General, and O30 - Innovation; Research and Development; Technological Change; Intellectual Property Rights: General
Creator: Segerstrom, Paul Stephen, 1957- Series: Economic growth and development Abstract:
This paper develops a dynamic general equilibrium model of economic growth. The model has a steady state equilibrium in which some firms devote resources to discovering qualitatively improved products and other firms devote resources to copying these products. Rates of both innovation and imitation are endogenously determined based on the outcomes of R&D races between firms. Innovation subsidies are shown to unambiguously promote economic growth. Welfare is only enhanced however if the steady state intensity of innovative effort exceeds a critical level.
Soggetto: O41 - One, Two, and Multisector Growth Models and O31 - Technological change ; Research and development - Innovation and invention : Processes and incentives
Creator: Jovanovic, Boyan, 1951- and Rob, Rafael Series: Models of economic growth and development Abstract:
This paper presents a model of growth through technical progress. The nature and scope of what is learned is derived from a set of axioms, and optimal search behavior by agents is then analyzed. Agents can search intensively or extensively. Intensive search explores a technology in greater depth, while extensive search yields new technologies. Agents alternate between these two modes of search. The economy grows forever and the growth rate is bounded away from zero. The growth rate is on average higher during periods of intensive search than during periods of extensive search. Epochs of higher growth are initiated by discoveries that call for further intensive exploration. This mechanism is reminiscent of the process described by Schumpeter as causing long-wave business cycles. Serial correlation properties of output and growth stem from the presence of intensive rather than extensive search. The two key parameters are technological opportunity and the cost of the extensive search.
Soggetto: O30 - Technological change ; Research and development - General and O47 - Economic growth and aggregate productivity - Measurement of economic growth ; Aggregate productivity ; Cross-country output convergence
Creator: Galor, Oded, 1953- and Weil, David N. Series: Productivity and the industrial revolution Abstract:
This paper develops a unified model of growth, population, and technological progress that is consistent with long-term historical evidence. The economy endogenously evolves through three phases. In the Malthusian regime, population growth is positively related to the level of income per capita. Technological progress is slow and is matched by proportional increases in population, so that output per capita is stable around a constant level. In the post-Malthusian regime, the growth rates of technology and total output increase. Population growth absorbs much of the growth of output, but income per capita does rise slowly. The economy endogenously undergoes a demographic transition in which the traditionally positive relationship between income per capita and population growth is reversed. In the Modern Growth regime, population growth is moderate or even negative, and income per capita rises rapidly. Two forces drive the transitions between regimes: First, technological progress is driven both by increases in the size of the population and by increases in the average level of education. Second, technological progress creates a state of disequilibrium, which raises the return to human capital and induces parents to substitute child quality for quantity.
Parola chiave: Technological change, Malthusian, Growth, Development, Demographics, Demographic transition, Fertility, and Population Soggetto: O11 - Economic development - Macroeconomic analyses of economic development, J13 - Demographic economics - Fertility ; Family planning ; Child care ; Children ; Youth, O40 - Economic growth and aggregate productivity - General, and O33 - Technological change ; Research and development - Technological change : Choices and consequences ; Diffusion processes
Creator: Atkeson, Andrew, Burstein, Ariel, and Chatzikonstantinou, Manolis Series: Staff report (Federal Reserve Bank of Minneapolis. Research Department) Number: 573 Abstract:
What quantitative lessons can we learn from models of endogenous technical change through innovative investments by firms for the impact of changes in the economic environment on the dynamics of aggregate productivity in the short, medium, and long run? We present a unifying model that nests a number of canonical models in the literature and characterize their positive implications for the transitional dynamics of aggregate productivity and their welfare implications in terms of two sufficient statistics. We review the current state of measurement of these two sufficient statistics and discuss the range of positive and normative quantitative implications of our model for a wide array of counterfactual experiments, including the link between a decline in the entry rate of new firms and a slowdown in the growth of aggregate productivity given that measurement. We conclude with a summary of the lessons learned from our analysis to help direct future research aimed at building models of endogenous productivity growth useful for quantitative analysis.
Parola chiave: Endogenous growth, Transitional dynamics, and Innovative investment Soggetto: O40 - Economic Growth and Aggregate Productivity: General and O30 - Innovation; Research and Development; Technological Change; Intellectual Property Rights: General
Creator: Atkeson, Andrew and Burstein, Ariel Series: Staff report (Federal Reserve Bank of Minneapolis. Research Department) Number: 459 Abstract:
We examine the quantitative impact of policy-induced changes in innovative investment by firms on growth in aggregate productivity and output in a model that nests several of the canonical models in the literature. We isolate two statistics, the impact elasticity of aggregate productivity growth with respect to an increase in aggregate innovative investment and the degree of intertemporal knowledge spillovers in research, that play a key role in shaping the model’s predicted dynamic response of aggregate productivity, output, and welfare to a policy-induced change in the innovation intensity of the economy. Given estimates of these statistics, we find that there is only modest scope for increasing aggregate productivity and output over a 20-year horizon with uniform subsidies to firms’ investments in innovation of a reasonable magnitude, but the welfare gains from such a subsidy may be substantial.
Parola chiave: Innovation policies, Economic growth, and Social depreciation Soggetto: O40 - Economic Growth and Aggregate Productivity: General and O30 - Innovation; Research and Development; Technological Change; Intellectual Property Rights: General
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.
Parola chiave: Productivity, Selection, Imitation, and Diffusion Soggetto: O30 - Innovation; Research and Development; Technological Change; Intellectual Property Rights: General and L10 - Market Structure, Firm Strategy, and Market Performance: General
Creator: Boldrin, Michele and Levine, David K. Series: Staff report (Federal Reserve Bank of Minneapolis. Research Department) Number: 279 Abstract:
Market booms are often followed by dramatic falls. To explain this requires an asymmetry in the underlying shocks. A straightforward model of technological progress generates asymmetries that are also the source of growth cycles. Assuming a representative consumer, we show that the stock market generally rises, punctuated by occasional dramatic falls. With high risk aversion, bad news causes dramatic increases in prices. Bad news does not correspond to a contraction of existing production possibilities, but to a slowdown in their rate of expansion. This economy provides a model of endogenous growth cycles in which recoveries and recessions are dictated by the adoption of innovations.
Parola chiave: Stock Market Value, Growth Cycles, and Technological Revolutions Soggetto: O41 - One, Two, and Multisector Growth Models, G12 - Asset Pricing; Trading Volume; Bond Interest Rates, O40 - Economic Growth and Aggregate Productivity: General, and O30 - Innovation; Research and Development; Technological Change; Intellectual Property Rights: General