Working Papers
2012
January 1, 2012
Macroeconomic and Welfare Costs of U.S. Fiscal Imbalances
Description: In this paper we use a general equilibrium model with heterogeneous agents to assess the macroeconomic and welfare consequences in the United States of alternative fiscal policies over the medium-term. We find that failing to address the fiscal imbalances associated with current federal fiscal policies for a prolonged period would result in a significant crowding-out of private investment and a severe drag on growth. Compared to adopting a reform that gradually reduces federal debt to its pre-crisis level, postponing debt stabilization for two decades would entail a permanent output loss of about 17 percent and a welfare loss of almost 7 percent of lifetime consumption. Moreover, the long-run welfare gains from the adjustment would more than compensate the initial losses associated with the consolidation period.
January 1, 2012
How Risky Are Banks' Risk Weighted Assets? Evidence From the Financial Crisis
Description: We study how investors account for the riskiness of banks' risk-weighted assets (RWA) by examining the determinants of stock returns and market measures of risk. We find that banks with higher RWA had lower stock returns over the US and European crises. This relationship is weaker in Europe where banks can use Basel II internal risk models. For large banks, investors paid less attention to RWA and rewarded instead lower wholesale funding and better asset quality. RWA do not, in general, predict market measures of risk although there is evidence of a positive relationship before the US crisis which becomes negative afterwards.
January 1, 2012
Shifting Motives: Explaining the Buildup in official Reserves in Emerging Markets Since the 1980's
Description: Why have emerging market economies (EMEs) been stockpiling international reserves? We find that motives have varied over time?vulnerability to current account shocks was relatively important in the 1980s but, as EMEs have become more financially integrated, factors related to the magnitude of potential capital outflows have gained in importance. Reserve accumulation as a by-product of undervalued currencies has also become more important since the Asian crisis. Correspondingly, using quantile regressions, we find that the reason for holding reserves varies according to the country's position in the global reserves distribution. High reserve holders, who tend to be more financially integrated, are motivated by insurance against capital account rather than current account shocks, and are more sensitive to the cost of holding reserves than are low-reserve holders. Currency undervaluation is a significant determinant across the reserves distribution, albeit for different reasons.
January 1, 2012
Barbados: Sectoral Balance Sheet Mismatches and Macroeconomic Vulnerabilities
Description: This paper uses the balance sheet approach to analyze macroeconomic vulnerabilities in Barbados between 2006 and 2009. It discusses the financial position of the economy and its main sectors and the sectors' exposure to changes in exchange rates. The main finding of the analysis is that the balance sheet of the aggregate economy has been weakened by the recent deterioration in the balance sheet of the nonfinancial public sector. Macroeconomic vulnerabilities have increased in Barbados since 2006 due to the high public debt and the deterioration in the net financial position with nonresidents. The private sector, however, maintained a healthy position and seems resilient to shocks. The paper also finds the balance sheet of the nonfinancial public sector has deteriorated significantly reflecting weak fiscal performance. While the central government is highly vulnerable to exchange rate shock, debt rollover risks are likely to be limited since most of external liabilities are long term and most domestic liabilities are held by the National Insurance System.
January 1, 2012
Bank Capital Adequacy in Australia
Description: The paper finds that, given Australia's conservative approach in implementing the Basel II framework, Australian banks' headline capital ratios underestimate their capital strengths. Given their high capital quality and the progress in their funding profiles since the global financial crisis, the Australian banks are making good progress toward meeting the Basel III requirements, including the new liquidity standards. Stress tests calibrated on the Irish crisis experience show that the banks could withstand sizable shocks to their exposure to residential mortgages. However, combining residential mortgage shocks with corporate losses expected at the peak of the global financial crisis would put more pressure on Australian banks' capital. Therefore, it would be useful to consider the merits of higher capital requirements for systemically important domestic banks.
January 1, 2012
Surges
Description: This paper examines why surges in capital flows to emerging market economies (EMEs) occur, and what determines the allocation of capital across countries during such surge episodes. We use two different methodologies to identify surges in EMEs over 1980-2009, differentiating between those mainly caused by changes in the country's external liabilities (reflecting the investment decisions of foreigners), and those caused by changes in its assets (reflecting the decisions of residents). Global factors-including US interest rates and risk aversion¡-are key to determining whether a surge will occur, but domestic factors such as the country's external financing needs (as implied by an intertemporal optimizing model of the current account) and structural characteristics also matter, which explains why not all EMEs experience surges. Conditional on a surge occurring, moreover, the magnitude of the capital inflow depends largely on domestic factors including the country's external financing needs, and the exchange rate regime. Finally, while similar factors explain asset- and liability-driven surges, the latter are more sensitive to global factors and contagion.
January 1, 2012
Commodity Price Volatility and the Sources of Growth
Description: This paper studies the impact of the level and volatility of the commodity terms of trade on economic growth, as well as on the three main growth channels: total factor productivity, physical capital accumulation, and human capital acquisition. We use the standard system GMM approach as well as a cross-sectionally augmented version of the pooled mean group (CPMG) methodology of Pesaran et al. (1999) for estimation. The latter takes account of cross-country heterogeneity and cross-sectional dependence, while the former controls for biases associated with simultaneity and unobserved country-specific effects. Using both annual data for 1970-2007 and five-year non-overlapping observations, we find that while commodity terms of trade growth enhances real output per capita, volatility exerts a negative impact on economic growth operating mainly through lower accumulation of physical capital. Our results indicate that the negative growth effects of commodity terms of trade volatility offset the positive impact of commodity booms; and export diversification of primary commodity abundant countries contribute to faster growth. Therefore, we argue that volatility, rather than abundance per se, drives the "resource curse" paradox.
January 1, 2012
Clarity of Central Bank Communication About Inflation
Description: This paper examines whether the clarity of central bank communication about inflation has changed with the economic environment. We use readability statistics and content analysis to study the clarity of communication on the inflation outlook by seven central banks between 1997 and 2010. Overall, we find no strong indications that central banks were less clear in explaining their policies when faced with higher uncertainty or a less favorable inflation outlook. The global financial crisis, however, did have a negative impact on clarity of central bank communication.
January 1, 2012
Income Inequality and Current Account Imbalances
Description: This paper studies the empirical and theoretical link between increases in income inequality and increases in current account deficits. Cross-sectional econometric evidence shows that higher top income shares, and also financial liberalization, which is a common policy response to increases in income inequality, are associated with substantially larger external deficits. To study this mechanism we develop a DSGE model that features workers whose income share declines at the expense of investors. Loans to workers from domestic and foreign investors support aggregate demand and result in current account deficits. Financial liberalization helps workers smooth consumption, but at the cost of higher household debt and larger current account deficits. In emerging markets, workers cannot borrow from investors, who instead deploy their surplus funds abroad, leading to current account surpluses instead of deficits.
2011
December 1, 2011
Credit Growth and Bank Soundness: Fast and Furious?
Description: We examine the risks to bank soundness associated with credit booms in a large set of countries. Using bank-level data in 90 countries between 1995 and 2005, we analyze the relationship between credit growth and bank soundness taking into account the potential two-way causality. We find that, while sounder banks tend to grow faster at moderate-growth periods, credit growth becomes less dependent on soundness during booms. These findings shed some light on why credit booms are often associated with financial crises.