Eduardo A. Cavallo

The Economics of Natural Disasters: A Survey

Natural disasters are by no means new, yet the evolving understanding of their relevance to economic development and growth is still in its infancy. This paper summarizes the state of the economic literature examining the aggregate impact of disasters. The paper reviews the main disaster data sources available, discusses the determinants of the direct effects of disasters, and distinguishes between short- and long-run indirect effects. The paper then examines some of the relevant policy questions and follows up with projections about the likelihood of future disasters. The paper ends by identifying several significant gaps in the literature.

Natural Disasters and the Economy — A Survey

This paper surveys the state of the economic literature examining the aggregate impacts of natural disasters. The paper reviews the main disaster data sources available, discusses the determinants of the direct effects of disasters, and distinguishes between short- and long-run indirect effects. The paper then examines some of the relevant policy questions and follows up with a survey of current projections about the likelihood of future disasters. The paper ends by identifying several significant gaps in the literature.

Catastrophic Natural Disasters and Economic Growth

This paper examines the short and long-run average causal impact of catastrophic natural disasters on economic growth by combining information from comparative case studies. The counterfactual of the cases studied is assessed by constructing synthetic control groups, taking advantage of the fact that the timing of large sudden natural disasters is an exogenous event. It is found that only extremely large disasters have a negative effect on output, both in the short and long run. However, this result appears in two events where radical political revolutions followed the natural disasters. Once these political changes are controlled for, even extremely large disasters do not display any significant effect on economic growth. It is also found that smaller, but still very large natural disasters, have no discernible effect on output.

Public Investment in Developing Countries: A Blessing or a Curse?

This paper analyzes the impact of public investment on private investment in 116 developing countries between 1980 and 2006. It finds a strong crowding-out effect that seems to be the norm rather than the exception, both across regions and over time. This effect is dampened (or even reversed) in countries with better institutions that are more open to international trade and financial flows. These results confirm that while public infrastructure may complement private capital, distortions associated with the public investment process might crowd out private investment in the course of building public capital stocks. These distortions are more prevalent in countries with weak institutions or closed economies.

Output Volatility and Openness to Trade: A Reassessment

This paper presents new empirical evidencesuggesting that the net effect of trade openness on output volatility is stabilizing. The methodology employed seeks to correct for the likely endogeneity of trade in this setting using gravity estimates as instrumental variables. The results confirm that exposure to trade raises output volatility through the terms-of-trade channel, as previously documented in the literature, but also shows that this is counteracted by a quantitatively larger stabilizing effect. Additional evidence is presented showing that the latter effect comes (at least in part) through the financial channel. Splitting the sample into countries that are more exposed to capital flows and countries that are less exposed, the paper shows that the stabilizing effect of commercial trade predominates in the first sub-sample.

Debt Sustainability Under Catastrophic Risk: The Case for Government Budget Insurance

Natural disasters are an important source of vulnerability in the Caribbean region. Despite being one of the more disaster-prone areas of the world, it has the lowest levels of insurance coverage. This paper examines the vulnerability of Belize’s public finance to the occurrence of hurricanes and the potential impact of insurance instruments in reducing that vulnerability. The paper finds that catastrophic risk insurance significantly improves Belize’s debt sustainability. In addition, the methodology employed makes it possible to estimate the appropriate level of insurance, which for the case of Belize is a maximum coverage of US

Are crises good for long-term growth? The role of political institutions

120 million per year. International organizations can play a role in assisting countries to overcome distortions in insurance markets, as well as in helping to relax internal political resistance to the purchase of insurance policies.

Trade, Gravity and Sudden Stops: On How Commercial Trade Can Increase the Stability of Capital Flows

This paper provides empirical evidence for the importance of institutions in determining the outcome of crises on long-term growth. Once unobserved country-specific effects and other sources of endogeneity are accounted for, political institutions affect growth through their interaction with crises. The results suggest that only countries with strong democracies, high levels of political competition and external constraints on government can potentially benefit from crises and use them as opportunities to enhance long-term output per capita and productivity growth.

Do Credit Rating Agencies Add Value? Evidence from the Sovereign Rating Business Institutions

Financial stability is an important policy objective, since crises are associated with large economic, social and political costs. This paper contributes to the discussion by providing new theoretical and empirical evidence on the causal connection between lack of exposure to commercial trade and proclivity to sudden stops. On the theoretical front, the paper shows how exposure to trade raises the creditworthiness of countries and reduces the probability of sudden stops.

A New Taxonomy of Sudden Stops: Which Sudden Stops Should Countries Be Most Concerned About?

If rating agencies add no new information to markets, their actions are not a public policy concern. But as rating changes may be anticipated, testing whether ratings add value is not straightforward. This paper argues that ratings and spreads are both noisy signals of fundamentals and suggest ratings add value if, controlling for spreads, they help explain other variables. The paper additionally analyzes the different actions (ratings and outlooks) of the three leading agencies for sovereign debt, considering the differing effects of more or less anticipated events. The results are consistent across a wide range of tests. Ratings do matter and hence how the market for ratings functions may be a public policy concern.