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Vesna Corbo

2 October 2012
WORKING PAPER SERIES - No. 1482
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Abstract
The elasticity of substitution between domestic and imported goods is a central parameter in macroeconomic models, but after decades of empirical studies there is no consensus on its magnitude. Earlier literature using time series arrives at low values, while more recent studies using panel-based econometric methods on disaggregated data find higher values. We examine the econometric methodology of this more recent literature, which follows the seminal work by Feenstra (1994), looking in more detail at the effect on the results of the non-linear mapping between reduced-form and structural parameters. Our main contribution is the use of bootstrap methods, which offer more insight into the Feenstra method and can explain why researchers applying it may tend to find high estimates. The bootstrap not only allows us to obtain considerably less biased estimates of the structural elasticity parameter, but also to better characterize their accuracy, a point vastly overlooked by the literature.
JEL Code
C14 : Mathematical and Quantitative Methods→Econometric and Statistical Methods and Methodology: General→Semiparametric and Nonparametric Methods: General
C23 : Mathematical and Quantitative Methods→Single Equation Models, Single Variables→Panel Data Models, Spatio-temporal Models
F14 : International Economics→Trade→Empirical Studies of Trade
Network
Competitiveness Research Network
16 April 2013
WORKING PAPER SERIES - No. 1535
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Abstract
We estimate the elasticity of substitution of a country's imports, and that of its exports on the world market, for EU countries using sector level trade data. We present a new empirical strategy based on the identification scheme by Feenstra (1994), which enables the estimation of elasticities from data on exports. Moreover, our use of bootstrap methods allows us to obtain better elasticity measures, and to better characterize their accuracy. Our results show much heterogeneity in the estimates of the elasticity of substitution across industrial sectors. This, in turn, points to heterogeneity across countries, due to different production and trade structures. We obtain aggregate elasticities for the EU27 countries, with a mean of 3.5 for imports and 4.0 for exports, bringing us closer to traditional estimates and bridging the gap between the newer micro data estimates and the more traditional estimates found in the macroeconomic literature.
JEL Code
C23 : Mathematical and Quantitative Methods→Single Equation Models, Single Variables→Panel Data Models, Spatio-temporal Models
F14 : International Economics→Trade→Empirical Studies of Trade
F47 : International Economics→Macroeconomic Aspects of International Trade and Finance→Forecasting and Simulation: Models and Applications
Network
Competitiveness Research Network
9 March 2015
WORKING PAPER SERIES - No. 1760
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Abstract
This paper employs fifteen dynamic macroeconomic models maintained within the European System of Central Banks to assess the size of fiscal multipliers in European countries. Using a set of common simulations, we consider transitory and permanent shocks to government expenditures and different taxes. We investigate how the baseline multipliers change when monetary policy is transitorily constrained by the zero nominal interest rate bound, certain crisis-related structural features of the economy such as the share of liquidity-constrained households change, and the endogenous fiscal rule that ensures fiscal sustainability in the long run is specified in terms of labour income taxes instead of lump-sum taxes.
JEL Code
E12 : Macroeconomics and Monetary Economics→General Aggregative Models→Keynes, Keynesian, Post-Keynesian
E13 : Macroeconomics and Monetary Economics→General Aggregative Models→Neoclassical
E17 : Macroeconomics and Monetary Economics→General Aggregative Models→Forecasting and Simulation: Models and Applications
E62 : Macroeconomics and Monetary Economics→Macroeconomic Policy, Macroeconomic Aspects of Public Finance, and General Outlook→Fiscal Policy
E63 : Macroeconomics and Monetary Economics→Macroeconomic Policy, Macroeconomic Aspects of Public Finance, and General Outlook→Comparative or Joint Analysis of Fiscal and Monetary Policy, Stabilization, Treasury Policy
10 August 2016
OCCASIONAL PAPER SERIES - No. 175
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Abstract
This paper revisits the empirical relationship between unemployment and output, and its evolution following the financial crisis of 2008, with the aim of drawing potential consequences for labour market modelling strategies in place within the European System of Central Banks (ESCB). First, the negative correlation between output and unemployment (Okun’s law) at cyclical frequencies is found to be a robust feature of macro data across time, countries and identification schemes. Focusing on the euro area, the financial distress seems to have altered the dynamics of output and unemployment mainly at lower frequencies, interpreted as trend developments by the statistical filters used in the analysis. Looking at the implications for modelling strategies, we propose an extension of the standard labour search and matching model in which financial frictions impinge directly on the labour market rather than on the capital market, opening the way to protracted and lagged response of employment after a “financial” crisis. In terms of policy implications, the importance of the interplay between financial and labour market frictions in trend developments should be read as strong support for an ambitious structural reform agenda in Europe, so as to make our labour (and goods) markets more flexible and resilient.
JEL Code
E10 : Macroeconomics and Monetary Economics→General Aggregative Models→General
E32 : Macroeconomics and Monetary Economics→Prices, Business Fluctuations, and Cycles→Business Fluctuations, Cycles
J64 : Labor and Demographic Economics→Mobility, Unemployment, Vacancies, and Immigrant Workers→Unemployment: Models, Duration, Incidence, and Job Search