Should We Use Linearized Models To Calculate Fiscal Multipliers?
Jesper Lindé, Mathias Trabandt
Journal of Applied Econometrics,
No. 7,
2018
Abstract
We calculate the magnitude of the government consumption multiplier in linearized and nonlinear solutions of a New Keynesian model at the zero lower bound. Importantly, the model is amended with real rigidities to simultaneously account for the macroeconomic evidence of a low Phillips curve slope and the microeconomic evidence of frequent price changes. We show that the nonlinear solution is associated with a much smaller multiplier than the linearized solution in long‐lived liquidity traps, and pin down the key features in the model which account for the difference. Our results caution against the common practice of using linearized models to calculate fiscal multipliers in long‐lived liquidity traps.
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Inference in Structural Vector Autoregressions when the Identifying Assumptions are not Fully Believed: Re-evaluating the Role of Monetary Policy in Economic Fluctuations
Christiane Baumeister, James D. Hamilton
Journal of Monetary Economics,
2018
Abstract
Point estimates and error bands for SVARs that are set identified are only justified if the researcher is persuaded that some parameter values are a priori more plausible than others. When such prior information exists, traditional approaches can be generalized to allow for doubts about the identifying assumptions. We use information about both structural coefficients and impacts of shocks and propose a new asymmetric t-distribution for incorporating information about signs in a nondogmatic way. We apply these methods to a three-variable macroeconomic model and conclude that monetary policy shocks are not the major driver of output, inflation, or interest rates.
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Expectation Formation, Financial Frictions, and Forecasting Performance of Dynamic Stochastic General Equilibrium Models
Oliver Holtemöller, Christoph Schult
Abstract
In this paper, we document the forecasting performance of estimated basic dynamic stochastic general equilibrium (DSGE) models and compare this to extended versions which consider alternative expectation formation assumptions and financial frictions. We also show how standard model features, such as price and wage rigidities, contribute to forecasting performance. It turns out that neither alternative expectation formation behaviour nor financial frictions can systematically increase the forecasting performance of basic DSGE models. Financial frictions improve forecasts only during periods of financial crises. However, traditional price and wage rigidities systematically help to increase the forecasting performance.
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On DSGE Models
Lawrence J. Christiano, Martin S. Eichenbaum, Mathias Trabandt
Journal of Economic Perspectives,
No. 3,
2018
Abstract
The outcome of any important macroeconomic policy change is the net effect of forces operating on different parts of the economy. A central challenge facing policymakers is how to assess the relative strength of those forces. Economists have a range of tools that can be used to make such assessments. Dynamic stochastic general equilibrium (DSGE) models are the leading tool for making such assessments in an open and transparent manner. We review the state of mainstream DSGE models before the financial crisis and the Great Recession. We then describe how DSGE models are estimated and evaluated. We address the question of why DSGE modelers—like most other economists and policymakers—failed to predict the financial crisis and the Great Recession, and how DSGE modelers responded to the financial crisis and its aftermath. We discuss how current DSGE models are actually used by policymakers. We then provide a brief response to some criticisms of DSGE models, with special emphasis on criticism by Joseph Stiglitz, and offer some concluding remarks.
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Die mittelfristige wirtschaftliche Entwicklung in Deutschland für die Jahre 2017 bis 2022 und finanzpolitische Optionen einer neuen Bundesregierung
Dmitri Bershadskyy, Hans-Ulrich Brautzsch, Andrej Drygalla, Katja Heinisch, Oliver Holtemöller, Axel Lindner, Matthias Wieschemeyer, Götz Zeddies
Konjunktur aktuell,
No. 5,
2017
Abstract
Nach der Mittelfristprojektion des IWH wird das Bruttoinlandsprodukt in Deutschland in den Jahren von 2017 bis 2022 um durchschnittlich 1½% wachsen; das nominale Bruttoinlandsprodukt wird um durchschnittlich 3½% zunehmen. Aufgrund der starken konjunkturellen Dynamik wird der Staat hohe Haushaltsüberschüsse erzielen. Die gute Finanzlage des Staates bietet einer neuen Bundesregierung große finanzpolitische Handlungsspielräume. Aufbauend auf der Mittelfristprojektion des IWH und mit Hilfe eines makroökonometrischen Modells werden die Wirkungen verschiedener finanzpolitischer Maßnahmen auf diverse makroökonomische Größen analysiert. Im Ergebnis zeigt sich, dass der Multiplikator bei ausgabeseitigen expansiven finanzpolitischen Maßnahmen im Simulationszeitraum größer wäre als bei einnahmeseitigen. In der derzeitigen konjunkturellen Lage und aufgrund der im internationalen Vergleich immer noch hohen Abgabenbelastung des Faktors Arbeit wären einnahmeseitige Maßnahmen insgesamt besser geeignet, die Haushaltsüberschüsse abzubauen.
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19.12.2017 • 40/2017
The medium-term economic development in Germany from 2017 to 2022 and opportunities for fiscal policies of a new federal government
Due to the cyclical upswing in Germany, in case of unaltered legislation, the general government would achieve considerable budget surpluses in the years ahead. As a consequence, there is large fiscal scope for a new federal government. With the fiscal policy simulation model of the Halle Institute for Economic Research (IWH) – Member of the Leibniz Association, the macroeconomic effects of various fiscal policy measures are analysed. The results show that additional government expenditures, like the expansion of social benefits, do have a stronger effect on GDP than revenue cuts, like for instance tax reliefs. „Due to the already high capacity utilisation, revenue cuts seem to be advantageous from a business cycle perspective. Moreover, a reduction of the high taxes and charges on labour would, in contrast to an expansion of social benefits, have a positive effect on potential output“, says Oliver Holtemöller, head of the Department of Macroeconomics and IWH vice president.
Oliver Holtemöller
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The Macroeconomic Development of the Soviet Occupied Zone/GDR (1949 until 1989) – a Balance
Udo Ludwig
Günther Heydemann, Karl-Heinz Paqué (Hrsg.): Planwirtschaft – Privatisierung – Marktwirtschaft. Wirtschaftsordnung und -entwicklung in der SBZ/DDR und den neuen Bundesländern 1945 - 1994. Vandenhoeck & Ruprecht,
2017
Abstract
Das Growth Accounting Model wird angewandt, um den Einfluss der Faktoren Arbeit und Kapital sowie des technischen Fortschritts auf das Wachstum des Bruttoinlandsprodukts der DDR in den verschiedenen Perioden abzuschätzen. Hauptergebnis ist die Erkenntnis, dass das Zentralplanungsmodell an der Modernisierung scheiterte und nur während der Wirtschaftsreformen in der zweiten Hälfte der Sechziger die totale Faktorproduktivität den entscheidenden Einfluss auf das Wirtschaftswachstum ausübte.
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Macro-Financial Modelling of the Singapore Economy: a GVAR Approach
Alessandro Galesi, Filippo di Mauro
Monetary Authority of Singapore Macroeconomic Review,
October
2017
Abstract
Globalisation has greatly increased the degree of interdependence across countries. Macroeconomic policy must therefore take a global perspective, particularly in the case of small open economies such as Singapore. From a modeller’s point of view, this requires considering many countries, regions and markets, as well as multiple channels of transmission, including trade and financial linkages. Cross-country interdependencies are increasingly reflected in the effects of global shocks, to oil or food prices for example, as well as technology and policy uncertainty spillovers.
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07.09.2017 • 32/2017
The German economy: Growing strongly
In the summer of 2017, the upswing in Germany continues. „For this year, we forecast gross domestic product to expand by 1.9%, as it did in 2016, and for 2018 by 2.0%” says Oliver Holtemöller, head of the Department Macroeconomics and IWH vice president.
Oliver Holtemöller
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The Macroeconomic Development of the GDR until 1989
Udo Ludwig
Schneider, Jürgen (Hrsg.): Die Ursachen für den Zusammenbruch der Sowjetunion und der DDR (1945-1990). Eine ordnungstheoretische Analyse, Beiträge zur Wirtschafts- u. Sozialgeschichte. Band 132.2. Stuttgart,
2017
Abstract
Gegenstand der Untersuchung sind Schlüsselereignisse und politischen Strategien in der Wirtschaftsgeschichte der früheren DDR. Das Growth Accounting Model wird angewandt, um den Einfluss des Inputs von Arbeit und Kapital sowie des technischen Fortschritts auf das Wachstum des Bruttoinlandsprodukts in den verschiedenen Perioden abzuschätzen. Hauptergebnis ist die Erkenntnis, dass nur während der Wirtschaftsreformen in der zweiten Hälfte der Sechziger von der die totale Faktorproduktivität der entscheidende Einfluss auf das Wirtschaftswachstum ausging.
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