National Bureau of Economic Research

About: National Bureau of Economic Research is a nonprofit organization based out in Cambridge, Massachusetts, United States. It is known for research contribution in the topics: Monetary policy & Population. The organization has 2626 authors who have published 34177 publications receiving 2818124 citations. The organization is also known as: NBER & The National Bureau of Economic Research.

Distributive Politics and Economic Growth

Abstract: A crude distinction between economics and politics would be that economics is concerned with expanding the pie while politics is about distributing it. In this paper we analyze the relationship between the two. We focus on how an economy's initial configuration of resources shapes the political struggle for income and wealth distribution, and how that, in turn, affects long-run growth. Our main conclusion is that inequality is conducive to the adoption of growth-retarding policies. We derive this result from a simple political-economy model of growth, and present cross-country evidence consistent with it. The key feature of our model is that individuals differ in their relative factor endowments. We distinguish between two types of factors: an accumulated factor (called "capital") and a nonaccumulated factor (called "labor"). Growth is driven by the expansion of the capital stock, which is in turn determined by individual saving decisions. Long-run growth is endogenous, as the aggregate production function is taken to be linearly homogeneous in capital and (productive) government services taken together. The provision of government services is financed by a tax on capital. Because government services are productive, a "small" tax on

Finance and the Sources of Growth

Abstract: Development of the banking sector exerts a large, causal impact on total factor productivity growth, which in turn causes GDP to grow. Whether banking development has a long-run effect on capital growth or private saving remains to be seen. Beck, Levine, and Loayza evaluate whether the level of development in the banking sector exerts a causal impact on economic growth and its sources- total factor productivity growth, physical capital accumulation, and private saving. They use (1) a pure cross-country instrumental variable estimator to extract the exogenous component of banking development and (2) a new panel technique that controls for country-specific effects and endogeneity. They find that: - Banks do exert a large, causal impact on total factor productivity growth, which feeds through to overall GDP growth. - The long-run links between banking development and both capital growth and private savings are more tenuous. This paper - a product of Finance, Development Research Group - is part of a larger effort in the group to understand the links between the financial system and economic growth.

Environmental Impacts of a North American Free Trade Agreement

Abstract: In general, a reduction in trade barriers will affect the environment by expanding the scale of economic activity, by altering the composition of economic activity and by initiating a change in the techniques of production. We present empirical evidence to assess the relative magnitudes of these three effects as they apply to further trade liberalization in Mexico. We first use comparable measures of three air pollutants in a cross-section of urban areas located in 42 countries to study the relationship between air quality and economic growth. We find for two pollutants (sulphur dioxide and `smoke') that concentrations increase with per capita GDP at low levels of national income, but decrease with GDP growth at higher levels of income. We then study the determinants of the industry pattern of US imports from Mexico and of value added by Mexico's maquiladora sector. We investigate whether the size of pollution abatement costs in US industry influences the pattern of international trade and investment. Finally, we use the results from a computable general equilibrium model to study the likely compositional effect of a North American Free Trade Agreement (NAFTA) on pollution in Mexico.

No Contagion, Only Interdependence: Measuring Stock Market Co-Movements

Abstract: This paper examines stock market co-movements. It begins with a discussion of several conceptual issues involved in measuring these movements and how to test for contagion. Standard tests examine if cross-market correlation in stock market returns increase during a period of crisis. The measure of cross-market correlations central to this standard analysis, however, is biased. The unadjusted correlation coefficient is conditional on market movements over the time period under consideration, so that during a period of turmoil when stock market volatility increases, standard estimates of cross-market correlations will be biased upward. It is straightforward to adjust the correlation coefficient to correct for this bias. The remainder of the paper applies these concepts to test for stock market contagion during the 1997 East Asian crises, the 1994 Mexican peso collapse, and the 1987 U.S. stock market crash. In each of these cases, tests based on the unadjusted correlation coefficients find evidence of contagion in several countries, while tests based on the adjusted coefficients find virtually no contagion. This suggests that high market co-movements during these periods were a continuation of strong cross-market linkages. In other words, during these three crises there was no contagion, only interdependence.

A Survey of Weak Instruments and Weak Identification in Generalized Method of Moments

Abstract: Weak instruments arise when the instruments in linear instrumental variables (IV) regression are weakly correlated with the included endogenous variables. In generalized method of moments (GMM), more generally, weak instruments correspond to weak identification of some or all of the unknown parameters. Weak identification leads to GMM statistics with nonnormal distributions, even in large samples, so that conventional IV or GMM inferences are misleading. Fortunately, various procedures are now available for detecting and handling weak instruments in the linear IV model and, to a lesser degree, in nonlinear GMM.