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.
Read article
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.
Read article
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
Read press release
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
Applying the growth accounting model the impact of labor and capital inputs as well as of the technological progress on GDP growth in different historical periods oft Eastern Germany is estimated. The main finding is the failure of the central planning model to modernize the economy. The total factor productivity dominated the economic growth only during the economic reforms in the second halve of the 60ies.
Read article
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.
Read article
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
The paper analyzes the crucial events and political strategies driving the economic history of the former GDR. Applying the growth accounting model I estimate the impact of labor and capital inputs as wells as of the technological progress on GDP growth in different time periods. The main finding is the dominant role of total factor productivity in economic growth only during the economic reforms in the second halve of the 60ies.
Read article
U.S. Monetary-Fiscal Regime Changes in the Presence of Endogenous Feedback in Policy Rules
Yoosoon Chang, Boreum Kwak
Abstract
We investigate U.S. monetary and fiscal policy regime interactions in a model, where regimes are determined by latent autoregressive policy factors with endogenous feedback. Policy regimes interact strongly: Shocks that switch one policy from active to passive tend to induce the other policy to switch from passive to active, consistently with existence of a unique equilibrium, though both policies are active and government debt grows rapidly in some periods. We observe relatively strong interactions between monetary and fiscal policy regimes after the recent financial crisis. Finally, latent policy regime factors exhibit patterns of correlation with macroeconomic time series, suggesting that policy regime change is endogenous.
Read article
Should Forecasters Use Real-time Data to Evaluate Leading Indicator Models for GDP Prediction? German Evidence
Katja Heinisch, Rolf Scheufele
Abstract
In this paper we investigate whether differences exist among forecasts using real-time or latest-available data to predict gross domestic product (GDP). We employ mixed-frequency models and real-time data to reassess the role of survey data relative to industrial production and orders in Germany. Although we find evidence that forecast characteristics based on real-time and final data releases differ, we also observe minimal impacts on the relative forecasting performance of indicator models. However, when obtaining the optimal combination of soft and hard data, the use of final release data may understate the role of survey information.
Read article
05.10.2016 • 42/2016
International young researchers at IWH
Scientific insights do not stop at national borders and have to be equally accessible for women and men. “Whoever wants to do world-class research has to look beyond his own nose”, says Reint E. Gropp, president of the Halle Institute for Economic Research (IWH) – Member of the Leibniz Association. He himself received his PhD and did research in the US for several years.
Reint E. Gropp
Read press release
The Macroeconomic Risks of Undesirably Low Inflation
Jonas Arias, Christopher J. Erceg, Mathias Trabandt
European Economic Review,
2016
Abstract
This paper investigates the macroeconomic risks associated with undesirably low inflation using a medium-sized New Keynesian model. We consider different causes of persistently low inflation, including a downward shift in long-run inflation expectations, a fall in nominal wage growth, and a favorable supply-side shock. We show that the macroeconomic effects of persistently low inflation depend crucially on its underlying cause, as well as on the extent to which monetary policy is constrained by the zero lower bound. Finally, we discuss policy options to mitigate these effects.
Read article