Working Papers
2010
July 1, 2010
A Method for Calculating Export Supply and Import Demand Elasticities
Description: Trade elasticities are often needed in applied country work for various purposes and this paper describes a method for estimating import demand and export supply elasticities withoutusing econometrics. The paper reports empirical estimates of these elasticities for a large number of low, middle, and upper income countries. One task for which trade elasticities are needed is in developing exchange rate assessments and this paper shows how the estimated elasticities can be used for this purpose.
July 1, 2010
Some Uncomfortable Arithmetic Regarding Europe’s Public Finances
Description: Traditional fiscal indicators focused on measures of current deficits and debt miss the potentially important implications of current policies for future public finances. This could be problematic, including in the case of Europe, where population aging is expected to pose additional fiscal costs not captured by such indicators. To better gauge the state of public finances in the EU27 countries, this paper derives forward-looking fiscal measures of intertemporal net worth both directly from the European Commission’s Aging Working Group’s long-run indicators and using a comprehensive public-sector balance sheet approach. These measures could be used as an "early warning" mechanism and also as a communication device with the public. Current estimates indicate that, on existing policies, the intertemporal net worth of the EU27 is deeply negative, even in excess of its GDP level, and is projected to worsen further over time. This suggests that Europe’s current policies need to be significantly strengthened to bring future liabilities in line with the EU governments’ capacity to generate assets.
July 1, 2010
Democracy and Reforms: Evidence from a New Dataset
Description: Empirical evidence on the relationship between democracy and economic reforms is limited to few reforms, countries, and years. This paper studies the impact of democracy on the adoption of economic reforms using a new dataset on reforms in the financial, capital and banking sectors, product markets, agriculture, and trade for 150 countries over the period 1960 - 2004. Democracy has a positive and significant impact on the adoption of economic reforms but there is no evidence that economic reforms foster democracy. Our results are robust to the inclusion of a large variety of controls and estimation strategies.
July 1, 2010
The (Sizable) Role of Rehypothecation in the Shadow Banking System
Description: This paper examines the sizable role of rehypothecation in the shadow banking system. Rehypothecation is the practice that allows collateral posted by, say, a hedge fund to its prime broker to be used again as collateral by that prime broker for its own funding. In the United Kingdom, such use of a customer’s assets by a prime broker can be for an unlimited amount of the customer’s assets while in the United States rehypothecation is capped. Incorporating estimates for rehypothecation (and the associated re-use of collateral) in the recent crisis indicates that the collapse in non-bank funding to banks was sizable. We show that the shadow banking system was at least 50 percent bigger than documented so far. We also provide estimates from the hedge fund industry for the - churning - factor or re-use of collateral. From a policy angle, supervisors of large banks that report on a global consolidated basis may need to enhance their understanding of the off-balance sheet funding that these banks receive via rehypothecation from other jurisdictions.
July 1, 2010
The Cross-Country Incidence of the Global Crisis
Description: We examine whether the cross-country incidence and severity of the 2008-2009 global recession is systematically related to pre-crisis macroeconomic and financial factors. We find that the pre-crisis level of development, increases in the ratio of private credit to GDP, current account deficits, and openness to trade are helpful in understanding the intensity of the crisis. International risk sharing did little to shield domestic demand from the country-specific component of output declines, while those countries with large pre-crisis current account deficits saw domestic demand fall by much more than domestic output during the crisis.
July 1, 2010
The Dark Side of Bank Wholesale Funding
Description: Banks increasingly use short-term wholesale funds to supplement traditional retail deposits. Existing literature mainly points to the "bright side" of wholesale funding: sophisticated financiers can monitor banks, disciplining bad but refinancing good ones. This paper models a "dark side" of wholesale funding. In an environment with a costless but noisy public signal on bank project quality, short-term wholesale financiers have lower incentives to conduct costly monitoring, and instead may withdraw based on negative public signals, triggering inefficient liquidations. Comparative statics suggest that such distortions of incentives are smaller when public signals are less relevant and project liquidation costs are higher, e.g., when banks hold mostly relationship-based small business loans.
July 1, 2010
Local Housing Market Cycle and Loss Given Default: Evidence from Sub-Prime Residential Mortgages
Description: This paper studies the impact of housing market cycles on loss given default (LGD). Previous studies have shown that the current loan-to-value ratio (CLTV) is the most important determinant of LGD. This paper establishes another linkage which is between the house price cycles before the time of mortgage origination and LGD. The empirical analysis is based on a large loan-level sub-prime residential mortgage loss dataset from 1998 to 2009. Results show that house price history has a long memory in explaining LGD. Its explanatory power far exceeds the original LTV and other loan characteristics. This paper offers a countercyclical view of LGD risk. The model can be combined with a default probability model to serve as a regulatory prudential tool. Such a tool provides a solution to the inherent procyclical bias in BASEL II capital requirements, and can contribute to the safety and soundness of banking institutions.
July 1, 2010
How do International Financial Flows to Developing Countries Respond to Natural Disasters?
Description: This paper uses multivariate dynamic panel analysis to examine the response of international financial flows to natural disasters. The models estimated for a large sample of developing countries point to differentiated responses of specific types of financial flows. The results show that remittance inflows increase significantly in response to shocks to both climatic and geological disasters. The models suggest a nuanced role for foreign aid. While the responses of aid flows to natural disaster shocks in general tend not to be statistically significant, international assistance to low income countries increases following geological disaster shocks. Furthermore, the results show that typically, other private capital flows (bank lending and equity) do not attenuate the effects of disasters and in some specifications, even amplify the negative economic effects of these events. The conclusions of the paper have implications for capital/financial account management policies. In particular, countries should take their vulnerability to natural disasters into account when considering the costs and benefits of the liberalization of private capital flows.
July 1, 2010
The Macroeconomics of Medium-Term Aid Scaling-Up Scenarios
Description: We develop a model to analyze the macroeconomic effects of a scaling-up of aid and assess the implications of different policy responses. The model features key structural characteristics of low-income countries, including varying degrees of public investment efficiency and a learning-by-doing (LBD) externality that captures Dutch disease effects. On the policy front, it distinguishes between spending the aid, which is controlled by the fiscal authority, and absorbing the aid - financing a higher current account deficit - which is influenced by the central bank's reserve accumulation policies. We calibrate the model to Uganda and run several experiments. We find that a policy mix that results in full spending and absorption of aid can generate temporary demand and real exchange rate appreciation pressures, but also have a positive effect on real GDP in the medium term, through higher public capital. Full spending with partial absorption, on the other hand, may stem appreciation pressures but can also induce adverse medium-term real GDP effects, through private sector crowding out. When aid is very inefficiently invested and there are strong LBD externalities, aid can be harmful, and partial absorption policies may be justified. But in this case, a welfare improving solution is to defer spending or - even better if possible - raise its efficiency.
July 1, 2010
Of Runes and Sagas: Perspectives on Liquidity Stress Testing Using an Iceland Example
Description: The global financial crisis revealed weaknesses in the stress testing exercises performed on financial institutions and systems around the world. These failures were most evident in the area of liquidity risk, where now-obvious vulnerabilities were left largely undetected, with stress tests having largely focused on solvency risk. This paper uses publicly available data from a now-defunct bank in Iceland, where liquidity shocks were immense, to demonstrate how a combination of stress tests of the various risks would have provided a clearer picture of existing vulnerablities. We show that, ultimately, stress test models do not necessarily need to be complex or overly sophisticated. Basic stress tests, using appropriate assumptions and shocks, could reveal key areas of risk to inform contingency planning. The liquidity stress test templates used in this paper are included.