Estimating the social return to transport infrastructure: A price-difference approach applied to a quasi-experiment

Using the price differences between two markets, this study proposes a method for inferring the social return to transport infrastructure (in the vein of Fogel (1964)). We apply this approach to an investment that increased the shipping capacity of a thousand-mile-long railroad in western China. The event was quasi-experimental: before the expansion, the railroad was congested in one direction, but not the other. We find that, after the investment, (1) the between-destination price differences of goods shipped in the congestion direction dropped by about 30% and (2) shipping volume increased by around 40%. In contrast, those of goods in the other direction were not affected. These estimates imply a sizable social return to this particular investment: 10% per year in the most conservative case considered.     

Public investment in developing countries: A blessing or a curse?

This paper analyzes the relationship between public and private investment in developing countries. We set up a simple theoretical model where two countervailing forces coexist. On the one hand, public investment raises the marginal productivity of private capital and leads to potential crowding-in of private investment. On the other hand, weak institutions and restricted access to financing could diminish the positive effects of public investment projects and crowd-out private investment. The empirical results - which exploit both the time series and cross sectional variation in the data using a panel of 116 developing countries with annual observations between 1980 and 2006 - suggest that on average the crowing-out effect dominates. Moreover, we find that this crowing-out effect is dampened (or even reversed) in countries with better institutions - where the marginal productivity of public investment is conceivably higher - and that are more open to international trade and financial flows, such that financing constraints are less binding.     

Tax/subsidy policies toward vector-borne infectious diseases

Vector-borne diseases especially rife in poor countries pose sectoral tax/subsidy issues. Preventions and therapies mitigate these diseases in a numerical optimization model combining dynamic epidemiology and economics. The medical distinction between prevention and therapy does not distinguish economic properties of preventions and therapies. Some interventions increase and others decrease moving to the steady state, depending: on the utility function, the targeting of interventions and the disease process. Interventions display negative own-price but indeterminate cross-price effects. Juxtaposing the social planner's with decentralized choices quantifies externalities and shows how subsidies implement the first-best. One prevention and the therapy are equally subsidized.     

Inequality,growth, and environmental quality trade‐offs in a model with human capital accumulation

This paper develops a simple endogenous growth model where pollution exposure and vulnerability are unequally spread across the population, and growth and distribution are endogenous. In this set‐up, we investigate whether trade‐offs between growth, distributional, and environmental concerns may emerge. We show that a tighter environmental policy reduces income inequality and can improve both growth and total welfare. Immediate welfare losses, though, do occur, and are larger for countries that start at low levels of environmental quality (e.g. developing countries).     

The impact of climate on life satisfaction

We analyse the influence of climate on average life satisfaction in 79 countries using data from the World Values Survey. Climate is described in terms of ‘degree-months’ calculated as the cumulated monthly deviations from a base temperature of 65 °F (18.3 °C). Our results suggest that countries with climates characterised by a large number of degree-months enjoy significantly lower levels of life satisfaction. This finding is robust to a wide variety of model specifications. Using our results to analyse a particular climate change scenario associated with the IPCC A2 emissions scenario points to major losses for African countries, but modest gains for Northern Europe.     

Growth effects of environmental policy when pollution affects health

In this paper, we develop a R&D-based growth model with a pollution externality and a health production sector. We study how health-impairing pollution affects long term growth, and the effect of an emissions' reduction policy (tax). We show that a tighter environmental tax has positive effects on growth via two channels. On the one hand, it improves workers' health and, thereby, productivity; on the other hand, it induces a reallocation of resources towards R&D and, thereby, higher research intensity. The size of the growth effect of a tighter environmental tax, and the level of the optimal environmental tax, are both positively correlated with the weight individuals place on health relative to consumption. As for welfare, a tighter environmental tax brings about utility gains in the long run and, potentially, also in the short run.     

Fiscal Transfers and Distributive Conflict in a Simple Endogenous Growth Model with Unemployment

Abstract. In the simplified formal treatment proposed in this paper, a decrease in a policy parameter – the ratio of total tax revenues to GDP – can monotonically increase long-term growth rate and may lead to a higher employment level. This notwithstanding, the paper shows that the redistributive implications of such a decrease may induce the wage earners to oppose it. As a consequence, policy-makers reflecting social preferences may undertake redistributive transfers generating persistent unemployment and lowering growth even if commitment technologies allowing them to follow preannounced tax policies were feasible.     

Individual preferences for public education spending: Does personal income matter?

Standard redistributive arguments suggest that the impact of household income on preferences for public education spending should be negative, because wealthier families are likely to oppose the redistributive effect of public funding. However, the empirical evidence does not confirm this prediction. This paper addresses this ‘puzzle’ by focusing on the role of the inclusiveness of the education system and the allocation of public spending between tiers of education in shaping the impact of income on preferences. By using data from the International Social Survey Programme (2006), we show that, when access to higher levels of education is restricted (low inclusiveness) and when the share of public spending on tertiary education is high, the poor are less likely to support public education spending. This result suggests that reforming the education system towards greater inclusiveness might contribute to increase political backing for public investment in education from the relatively poor majority of the population.     

EMPIRICAL IMPACT OF PUBLIC INFRASTRUCTURE ON THE JAPANESE ECONOMY*

We study the impact of public capital investment on individual sectors of the Japanese economy using time‐series data for the period of 1970–1998. We employ a production function approach and also estimate a dynamic VAR/ECM model. We find significant differences in the employment effects, output effects and private investment effects across sectors. Public capital investment has a positive effect on employment in the finance, insurance and real estate (FIRE), manufacturing, construction and utilities sectors; on private investment in the FIRE, agriculture, transportation, trade and services sectors; and on output in the mining, FIRE, trade and manufacturing sectors.     

Variety of products,public capital,and endogenous growth

This paper develops an extension of the endogenous growth model with variety expansion presented in Romer [Romer, P.M., 1990. Endogenous technical change, Journal of Political Economy 98, part 2, S71–S102] by considering public capital accumulation. Characterizing the transitional dynamics, the growth rate of consumption traces (and available number of intermediate goods also might trace) an S-shaped converging path to the equilibrium growth rate, similar to a logistic growth curve, if the intensity of public capital is sufficiently high. We also show that public investment enhances economic growth because it stimulates demand for intermediate goods and raises the market interest rate.     

An international agreement with full participation to tackle the stock of greenhouse gases

Greenhouse gas emissions build up an atmospheric stock which depreciates over time. We identify weakly renegotiation-proof equilibria with full participation in a game of international emission reduction. Treaties are easier to reach for long-lived than for short-lived gases.     

Electricity provision and industrial development: Evidence from India

I investigate the effect of electricity provision on industrialization using a panel of Indian states for 1965-1984. To address the endogeneity of investment in electrification, I use the introduction of a new agricultural technology intensive in irrigation (the Green Revolution) as a natural experiment. As electric pumpsets are used to provide farmers with cheap irrigation water, I use the uneven availability of groundwater at the start of the Green Revolution to predict divergence in the expansion of the electricity network and, ultimately, to quantify the effect of electrification on industrial outcomes. I present a series of tests to show that the electrification channel remains the most important one among alternative explanations that could link groundwater availability to industrialization directly or indirectly. Results show that an increase in one standard deviation in the measure of electrification is associated with an increase of around 14% in manufacturing output for a state at the mean of the distribution.     

What determines foreign aid? The donors' perspective

This paper examines the factors affecting the support for foreign aid among voters in donor countries. A simple theoretical model, which considers an endogenous determination of official and private aid flows, relates individual income to aid support and also suggests that government efficiency is an important factor in this regard. The empirical analysis of individual attitudes, based on the World Values Surveys, reveals that satisfaction with own government performance and individual relative income are positively related to the willingness to provide foreign aid. Furthermore, using actual donor country data we find that aid is adversely affected by own government inefficiency.