Population and economic growth with human and physical capital investments

We present a two-sector endogenous growth model with human and physical capital accumulation to analyze the long-run relationship between population growth and real per capita income growth. Formal education and investment in physical capital are assumed to be two separate components of human capital production. Along the balanced growth path equilibrium, population change may have a positive, negative, or else neutral effect on economic growth depending on whether physical and human capital are complementary/substitutes for each other in the formation of new human capital and on their degree of complementarity.

Unilateral capital transfers, public investment, and economic growth

We contrast the effects of a transfer tied to investment in public infrastructure from a traditional pure transfer. The latter has no growth or dynamic consequences; it is always welfare improving, the gains increasing with the stock of government debt and the benefits of debt reduction. A tied transfer generates dynamic adjustments, as public capital is accumulated in the recipient economy. Its long-run growth and welfare effects depend upon the initial stock of infrastructure, as well as co-financing arrangements. These contrasts also apply to temporary transfers, particularly the transitional dynamics. A temporary pure transfer has only modest short-run growth effects and leads to a permanent deterioration of the current account, while a productive transfer has significant impacts on short-run growth, leading to permanent improvements in key economic variables including the current account.     

A multi-region model of economic growth with human capital and negative externalities in innovation

We use a multi-region model and provide the first theoretical analysis of the effects of human capital use and a particular kind of innovative activity on economic growth. In each of the N heterogeneous regions in our model, consumers have constant relative risk aversion preferences, there are negative externalities in innovation, and there are three kinds of manufacturing activities involving the production of blueprints for inputs or machines, the inputs or machines themselves, and a single final good for consumption. Our analysis generates four salient findings. First, for each of the N regions, we define a balanced growth path equilibrium, we characterize the market clearing factor prices, and we determine the free entry condition in the R&D sector. Second, we show that without growth in human capital, there is no sustained economic growth in any of the N regions. Third, we show that human capital growth generates sustained economic growth in each of the N regions. Finally, when discussing the above three findings, we shed light on the spatial dimensions of economic growth in our multi-region aggregate economy.     

Endogenous mortality, human capital and economic growth

We consider growth and welfare effects of lifetime-uncertainty in an economy with human capital-led endogenous growth. We argue that lifetime uncertainty reduces private incentives to invest in both physical and human capital. Using an overlapping generations framework with finite-lived households we analyze the relevance of government expenditure on health and education to counter such growth-reducing forces. We focus on three different models that differ with respect to the mode of financing of education: (i) both private and public spending, (ii) only public spending, and (iii) only private spending. Results show that models (i) and (iii) outperform model (ii) with respect to long-term growth rates of per capita income, welfare levels and other important macroeconomic indicators. Theoretical predictions of model rankings for these macroeconomic indicators are also supported by observed stylized facts.     

Tax avoidance,human capital accumulation and economic growth

Human capital accumulation may negatively affect economic growth by increasing tax avoidance and reducing effective tax rates and productive public investment. This paper analyzes how the endogenous feedback between human capital accumulation and tax avoidance affects economic growth and macroeconomic dynamics. Our findings show that this interaction produces remarkable growth and welfare effects.     

Human capital,innovation capability and economic growth in Portugal, 1960-2001

In maintaining that the main flaw in empirical studies on economic growth derives from the fact that they employ Solow-style neoclassical growth models, rather than testing actual endogenous growth theory, we examine the human capital-innovation-growth nexus, thus testing new growth theory more directly. We test its insights against the economic evolution of an individual country, Portugal, using time series data from 1960 to 2001. Estimates based on vector autoregressive and cointegration analysis seem to confirm that human capital and indigenous innovation efforts were enormously important to the economic growth process in Portugal during the period of study. In particular, the indirect effect of human capital through innovation, emerges here as being critical, showing that a reasonably high stock of human capital is necessary to enable a country to reap the benefits of its indigenous innovation efforts.Received: November 2003, Accepted: November 2004, JEL Classification: C22, J24, O30, O40 Correspondence to: Aurora A.C. TeixeiraThe authors are grateful to two anonymous referees, Paulo Brito and the participants of the 2003 Portuguese Society for Economics Research (SPiE) in Lisbon, Portugal for helpful comments and suggestions. CEMPRE - Centro de Estudos Macroeconómicos e Previsão - is supported by the Fundação para a Ciência e a Tecnologia, Portugal, through the Programa Operacional Ciência, Tecnologia e Inovação (POCTI) of the Quadro Comunitário de Apoio III, which is financed by FEDER and Portuguese funds.     

Human capital use,innovation, patent protection,and economic growth in multiple regions

We provide the first theoretical analysis of the effects of human capital use, innovative activity, and patent protection, on economic growth in a model with many regions. In each region, consumers have constant relative risk-aversion preferences, there is no human capital growth, and there are three kinds of manufacturing activities involving the production of blueprints for inputs (machines), the inputs themselves, and a single final consumption good. Our analysis generates four results. For any given region, we first describe the balanced growth path (BGP) equilibrium and show that the BGP growth rate depends negatively on the rate at which patents expire. Second, we characterize the transitional dynamics in our model. Third, we determine the value of the patent expiry rate that maximizes the equilibrium growth rate of a region. Finally, we show that a policy of offering perpetual patent protection does not necessarily maximize social welfare in a region.     

Heterogeneous capital, economic growth, and economic development

This paper asks how much does physical capital contribute to economic growth. It postulates that capital is heterogeneous because of embodied progress, and it structures the inquiry to account for differences in economic development. Embedded in data that cover 120 nations over 41 years are 35 derived capital stock series, whose characteristics include average ages stratified by development state. Growth accountancy proceeds by regression analysis cast in a production function context and repeated for each capital type. Those results help to establish the growth contributions of labor quantity and quality and capital quantity and quality. They also bear on neoclassical convergence.     

The quality of human capital,educational reform and economic growth

Using a general equilibrium growth model with a costly schooling process, this paper analyses the effect on economic growth of educational reform that allocates more resources to the schooling sector to raise the quality of human capital. It shows that the positive effect of improved quality on the economic growth could be offset by the reverse effect of reduced human capital formation that arises from the distortion of resource reallocation. An appropriate tax-subsidy scheme is shown to remove this reverse effect of educational reform.     

Short-run and long-run effects of capital taxation on innovation and economic growth

In this study, we examine the effects of capital taxation on innovation and economic growth in an R&D-based growth model. We find that capital taxation has drastically different effects in the short run and in the long run. An increase in the capital income tax rate has both a consumption effect and a tax-shifting effect on the equilibrium growth rates of technology and output. In the short run, the consumption effect dominates the tax-shifting effect causing an initial negative effect of capital taxation on the equilibrium growth rates. However, in the long run, the tax-shifting effect becomes the dominant force yielding an overall positive effect of capital taxation on steady-state economic growth. These contrasting effects of capital taxation at different time horizons may provide a theoretical explanation for the mixed evidence in the empirical literature on capital taxation and economic growth.     

AIDS and economic growth: A human capital approach

Using a model that combines growth and health capital equations this study analyses the impact of HIV/AIDS on economic growth. The econometric results indicate that the epidemic's effects have been substantial; in Africa the marginal impact on income per capita of a 1% increase in HIV prevalence rate is minus 0.59%. Even in countries with lower HIV prevalence rates the marginal impacts are non-trivial. Hence while the human and social costs of the HIV/AIDS epidemic are major causes for concern, these results indicate that the macroeconomic affects of the HIV/AIDS epidemic are important.     

Inside Europe: human capital and economic growth revisited

This paper investigates the impact of human capital on the process of innovation and technology catch-up in European Union countries. Based on the framework proposed by Benhabib and Spiegel (in: Aghion and Durlauf (eds) Handbook of economic growth, 1A, North-Holland, Amsterdam, 2005), a panel data model is estimated from 1950 to 2011 using the improved total factor productivity and human capital variables included in PWT 8.0. Following Vandenbussche et al. (J Econ Growth 11(2):97–127, 2006) we also analyse the differential impact of skilled and unskilled human capital on growth. The empirical analysis applies instrumental variables panel data methods which resolve the endogeneity bias. Our results show robust evidence of the significant direct and indirect effects of human capital on the process of total factor productivity (TFP henceforth) growth in euro area countries. When we analyse the impact of different kinds of human capital on different ways of increasing TFP we conclude that, regardless of academic level, the quantity of unskilled human capital boosts imitation in EU countries while, by contrast, highly qualified human capital is essential for growth through innovation.     

Product variety, competition and economic growth

In this paper, we study the relationship between competition and economic growth using a model of economic development through the creation of new sectors. In our model, competition has both an intra- and an inter-sector component. We find that the best conditions for economic development are achieved when a suitable ratio of inter- to intra-sector competition is achieved. This ratio constitutes a compromise between providing a temporary monopoly to the first entrepreneur (low inter-sector competition) and creating enough imitation to expand the sector (intra-sector competition).     

Franchise fee, competition and economic growth

This paper introduces the different kinds of franchise contract bargaining into a macroeconomic model and accordingly researches the relationship between competition and economic growth. In Nash bargaining model/vertical integration we find an inverted-U shaped or a monotonically increasing relationship between the competitive degree of the intermediate goods market and economic growth. In bargaining of the right to manage model/vertical non-integration our result shows an inverted-U shaped or a monotonically decreasing relationship between the competitive degree of the intermediate goods market and economic growth. In addition, there is an overall negative relationship between the competitive degree of the final goods market and economic growth. Especially, our interesting findings that the pricing rule for intermediate goods firm depends not only on market power but also bargaining power are more general. Therefore, we can further explain the firms' vertical control strategy.     

Externalities of investment, education and economic growth

We present a growth model in which investment in physical capital shows positive externalities which build up knowledge capital. A prerequisite for these spillovers to take place is that a country devotes time to education. Externalities associated with investment need education to raise the stock of knowledge capital. Analysing the competitive economy we demonstrate that the model may explain why some low-income countries show convergence whereas others do not. Furthermore, we demonstrate that in the social optimum the level of investment is always higher than in the competitive economy whereas the time spent for education may be lower or higher. We also show how the competitive economy may replicate the social optimum for an appropriate choice of a lump-sum tax and an investment subsidy. Empirical evidence is provided in order to demonstrate the plausibility of our model.     

Population growth and economic growth

This discussion of the issues relating to the problem posed by population explosion in the developing countries and economic growth in the contemporary world covers the following: predictions of economic and social trends; the Malthusian theory of population; the classical or stationary theory of population; the medical triage model; ecological disaster; the Global 2000 study; the limits to growth; critiques of the Limits to Growth model; nonrenewable resources; food and agriculture; population explosion and stabilization; space and ocean colonization; and the limits perspective. The Limits to Growth model, a general equilibrium anti-growth model, is the gloomiest economic model ever constructed. None of the doomsday models, the Malthusian theory, the classical stationary state, the neo-Malthusian medical triage model, the Global 2000 study, are so far reaching in their consequences. The course of events that followed the publication of the "Limits to Growth" in 1972 in the form of 2 oil shocks, food shock, pollution shock, and price shock seemed to bear out formally the gloomy predictions of the thesis with a remarkable speed. The 12 years of economic experience and the knowledge of resource trends postulate that even if the economic pressures visualized by the model are at work they are neither far reaching nor so drastic. Appropriate action can solve them. There are several limitations to the Limits to Growth model. The central theme of the model, which is overshoot and collapse, is unlikely to be the course of events. The model is too aggregative to be realistic. It exaggerates the ecological disaster arising out of the exponential growth of population and industry. The gross underestimation of renewable resources is a basic flaw of the model. The most critical weakness of the model is its gross underestimation of the historical trend of technological progress and the technological possiblities within industry and agriculture. The model does correctly emphasize the exponential growth of population as the source of several complications for economic growth and human welfare. Stabilization of population by reducing fertility is conducive for improving the quality of population and also advances the longterm management of the population growth and work force utilization. The perspective of longterm economic management involves populatio n planning, control of environmental pollution, conservation of scarce resources, exploration of resources, realization of technological possibilities in agriculture and industry and in farm and factory, and achievement of economic growth and its equitable distribution.     

Public capital, asymmetric information, and economic growth

Abstract.  We investigate the provision of public capital in an endogenous growth model with asymmetric information. In a credit market with costly screening, we show that the equilibrium contracts are characterized by the self‐selection of borrowers. Through identifying an additional adverse effect of taxation on growth, we show that the optimal tax rate in our model is smaller than the output elasticity of public capital. Therefore, our analysis justifies a more conservative tax policy in the presence of asymmetric information. Furthermore, our model suggests a number of implications that appear to be well supported by preliminary evidence in cross‐country data. JEL classification: D82, H21, O41