Luis Servén

The Effects of Infrastructure Development on Growth and Income Distribution

This paper provides an empirical evaluation of the impact of infrastructure development on economic growth and income distribution using a large panel data set encompassing over 100 countries and spanning the years 1960-2000. The empirical strategy involves the estimation of simple equations for GDP growth and conventional inequality measures, augmented to include among the regressors infrastructure quantity and quality indicators in addition to standard controls. To account for the potential endogeneity of infrastructure (as well as that of other regressors) we use a variety of GMM estimators based on both internal and external instruments, and report results using both disaggregated and synthetic measures of infrastructure quantity and quality. The two robust results are: (i) growth is positively affected by the stock of infrastructure assets, and (b) income inequality declines with higher infrastructure quantity and quality. A variety of specification tests suggest that these results do capture the causal impact of the exogenous component of infrastructure quantity and quality on growth and inequality. These two results combined suggest that infrastructure development can be highly effective to combat poverty. Furthermore, illustrative simulations for Latin American countries suggest that these impacts are economically quite significant, and highlight the growth acceleration and inequality reduction that would result from increased availability and quality of infrastructure

What Drives Private Saving Around the World

The authors investigate the policy and non-policy factors behind saving disparities, using a large panel data set and an encompassing approach including several relevant determinants of private saving. They extend the literature in several dimensions, by: 1) Using the largest data set on aggregate saving assembled to date. 2) Using panel instrumental variable techniques to correct for endogeneity and heterogeneity. 3) Performing robustness checks on changes in estimation procedures, data samples, and model specification. Their main empirical findings: a) Private saving rates show considerable inertia (are highly serially correlated even after controlling for other relevant factors). b) Private sector rates rise with the level and growth rate of real per capita income. So policies that spur development are in indirect but effective way to raise private saving rates. c) Predictions of the life-cycle hypothesis are supported in that dependency ratios generally have a negative effect on private saving rates. d) The precautionary motive for saving is supported by the finding that inflation - conventionally taken as a summary measure of macroeconomic volatility - has a positive impact on private saving, holding other facts constant. e) Fiscal policy is a moderately effective tool for raising national saving. F) the direct effect of financial liberalization are largely detrimental to private saving rates. Greater availability of credit reduces the private saving rate; financial depth and higher real interest rates do not increase saving.

Poverty reduction and growth : virtuous and vicious circles

Poverty Reduction and Growth is about the existence of these vicious circles in Latin America and the Caribbean about the ways and means to convert them into virtuous circles in which poverty reduction and high growth reinforce each other. This publication is organized as follows: Chapter 1: From vicious to virtuous circle; Chapter 2: Dimensions of well-being, channels to growth; Chapter 3: How did we get here? Chapter 4: The relative roles of growth and inequality for poverty reduction; Chapter 5: Pro-poor growth in Latin America; Chapter 6: Does poverty matter for growth? Chapter 7: Subnational dimensions of growth and poverty; Chapter 8: Microdeterminants of incomes: labor markets, poverty, and traps?; and Chapter 9: Breaking the cycle of underinvestment in human capital in Latin America.

Securing our future in a global economy

In the 1990s Latin America and the Caribbean (LAC) began to resurface from the lost decade of the 1980s after a sustained reform effort by the countries to enhance the role of market forces and increase the regions real and financial integration into the global economy. In spite of this, perceptions of economic insecurity run high in the region. This report assesses the extent, causes, and effects of economic insecurity in LAC and identifies policies and institutions that can help reduce the degree of insecurity faced by workers and households in the region, while allowing them to take advantage of the enhanced economic opportunities brought about by the recent reforms. After stating the facts concerning economic insecurity in Chapter 2, the report then sets out a general analytical framework to help organize the various options available to individuals and governments for dealing with economic insecurity (Chapter 3). With this framework, the remaining chapters focus on measures to deal with risks. First, they suggest the causes of macroeconomic or aggregate volatility and some remedies (Chapter 4). Then this report examines how these risks affect individuals and households, and their responses to economic shocks (Chapter 5). Next the report discusses the risk of becoming unemployed, and the public responses to help workers deal with this risk (Chapter 6). Appropriate social insurance and social protection is considered in the final chapter.

Infrastructure and Economic Development in Sub-Saharan Africa

An adequate supply of infrastructure services has long been viewed by both academics and policy makers as a key ingredient for economic development. Sub-Saharan Africa ranks consistently at the bottom of all developing regions in terms of infrastructure performance, and an increasing number of observers point to deficient infrastructure as a major obstacle for growth and poverty reduction across the region. This paper offers an empirical assessment of the impact of infrastructure development on growth and inequality, with a focus on Sub-Saharan Africa. The paper uses a comparative cross-regional perspective to place Africas experience in the international context. Drawing from an updated data set of infrastructure quantity and quality indicators covering more than 100 countries and spanning the years 1960-2005, the paper estimates empirical growth and inequality equations including a standard set of control variables augmented by infrastructure quantity and quality measures, and controlling for the potential endogeneity of the latter. The estimates illustrate the potential contribution of infrastructure development to growth and equity across Africa.

Measuring Aid Flows: A New Approach

The debate on the effectiveness of foreign aid has intensified in recent years as aid has come under increasing budgetary pressures in donor countries. Whatever the merits of the opposing arguments, the fundamental issue arises of whether conventionally-used measures of aid such as ODA, which lump together grants and loans, accurately reflect true aid flows. This paper analyzes the methodological shortcomings of conventional aid measures, and proposes a new valuation approach that measures official aid flows as the sum of grants and the grant equivalents of official loans. This conceptually superior aid measure can diverge significantly from the conventional aggregates and provide a quite different view on major aid trends.

The Impact of Regulation on Growth and Informality Cross-Country Evidence

The authors study the effects of regulation on economic growth and the relative size of the informal sector in a large sample of industrial and developing countries. Along with firm dynamics, informality is an important channel through which regulation affects macroeconomic performance and economic growth in particular. The authors conclude that a heavier regulatory burden-particularly in product and labor markets-reduces growth and induces informality. These effects are, however, mitigated as the overall institutional framework improves.

Debt crisis, adjustment policies and capital formation in developing countries: Where do we stand?

Abstract This paper documents the decline in investment rates observed in developing countries after 1982, and explores analytically and empirically the factors contributing to explain it. The paper focuses on the impact of macroeconomic adjustment and reform measures on private investment, particularly in Latin America and East Asia, and underscores the importance of macroeconomic uncertainty, policy credibility, and potential coordination failures in shaping the response of investment to the changes in economic incentives brought about by structural reforms. The analysis concludes with some policy recommendations to improve the design of sustainable, growth-oriented adjustment programs.

A Normal Relationship? Poverty, Growth, and Inequality

Using a large cross-country income distribution dataset spanning close to 800 country-year observations from industrial and developing countries, the authors show that the size distribution of per capita income is well approximated empirically by a lognormal density. The null hypothesis that per capita income follows a lognormal distribution cannot be rejected-although the same hypothesis is unambiguously rejected when applied to per capita consumption. The authors show that lognormality of per capita income has important implications for the relative roles of income growth and inequality changes in poverty reduction. When poverty reduction is the overriding policy objective, poorer and relatively equal countries may be willing to tolerate modest increases in income inequality in exchange for faster growth-more so than richer and highly unequal countries.

Is infrastructure capital productive ? a dynamic heterogeneous approach

This paper offers an empirical evaluation of the output contribution of infrastructure. Drawing from a large data set on infrastructure stocks covering 88 countries and spanning the years 1960-2000, and using a panel time-series approach, the paper estimates a long-run aggregate production function relating GDP to human capital, physical capital, and a synthetic measure of infrastructure given by the first principal component of infrastructure endowments in transport, power, and telecommunications. Tests of the cointegration rank allowing it to vary across countries reveal a common rank with a single cointegrating vector, which is taken to represent the long-run production function. Estimation of its parameters is performed using the pooled mean group estimator, which allows for unrestricted short-run parameter heterogeneity across countries while imposing the (testable) restriction of long-run parameter homogeneity. The long-run elasticity of output with respect to the synthetic infrastructure index ranges between 0.07 and 0.10. The estimates are highly significant, both statistically and economically, and robust to alternative dynamic specifications and infrastructure measures. There is little evidence of long-run parameter heterogeneity across countries, whether heterogeneity is unconditional, or conditional on their level of development, population size, or infrastructure endowments.