Do We Need New Modelling Approaches in Macroeconomics?
Claudia M. Buch, Oliver Holtemöller
IWH Discussion Papers,
No. 8,
2014
Abstract
The economic and financial crisis that emerged in 2008 also initiated an intense discussion on macroeconomic research and the role of economists in society. The debate focuses on three main issues. Firstly, it is argued that economists failed to predict the crisis and to design early warning systems. Secondly, it is claimed that economists use models of the macroeconomy which fail to integrate financial markets and which are inadequate to model large economic crises. Thirdly, the issue has been raised that economists invoke unrealistic assumptions concerning human behaviour by assuming that all agents are self-centred, rationally optimizing individuals. In this paper, we focus on the first two issues. Overall, our thrust is that the above statements are a caricature of modern economic theory and empirics. A rich field of research developed already before the crisis and picked up shortcomings of previous models.
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Gemeinschaftsdiagnose im Frühjahr 2014
Oliver Holtemöller, Axel Lindner
Wirtschaftsdienst,
No. 5,
2014
Abstract
Die Gemeinschaftsdiagnose prognostiziert für Deutschland in diesem und im nächsten Jahr einen Aufschwung, den vor allem die Binnennachfrage trägt. Die Wirtschaftsforschungsinstitute befürchten allerdings, dass sich ein Konjunktureinbruch in Russland negativ auf das deutsche Wachstum auswirken könnte. Von einem flächendeckenden Mindestlohn werden vor allem ungünstige Entwicklungen bei der Zahl der Erwerbstätigen erwartet.
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Glaskugel Prognose – Warum werden ökonomische Prognosen nicht besser?
Oliver Holtemöller
Wirtschaft im Wandel,
No. 2,
2014
Abstract
Während Prognosefehler bei kurzfristigen Wetterprognosen in den vergangenen Jahrzehnten deutlich reduziert werden konnten, hat sich der durchschnittliche absolute Prognosefehler ökonomischer Prognosen für die jährliche Veränderung des Bruttoinlandsprodukts in den vergangenen 45 Jahren kaum geändert. Dies liegt vor allem daran, dass sowohl in Bezug auf die tatsächlichen ökonomischen Wirkungszusammenhänge als auch in Bezug auf die relevanten zukünftigen ökonomischen Schocks eine fundamentale Unsicherheit besteht, die auch mit besseren Methoden und mehr Daten grundsätzlich nicht aufgehoben werden kann. Die Prognosen der Wirtschaftsforschungsinstitute sind allerdings unverzerrt und stellen daher eine solide Grundlage für die wirtschaftspolitische Planung dar. Trotz ihrer Unvollkommenheit sind wissenschaftlich fundierte Prognosen eine wichtige Grundlage rationaler Wirtschaftspolitik.
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Upturn in German Economy, but Economic Policy Creates Headwind: Joint Economic Forecast Spring 2014
Dienstleistungsauftrag des Bundesministeriums für Wirtschaft und Technologie,
2014
Abstract
The German economy is experiencing an upturn in spring 2014. Gross domestic product (GDP) is expected to grow by 1.9 percent this year. The 68 percent projection interval ranges from 1.2 percent to 2.6 percent. Domestic demand is the main driver of growth. Consumer prices will increase by a moderate 1.3 percent in 2014. The number of persons in employment looks set to rise steeply once again in 2014. Economic activity, however, will have to weather an economic policy headwind. The entitlement to a full pension as of 63 years is a step in the wrong direction and the introduction of the minimum wage will curb the rise in employment in 2015.
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Outperforming IMF Forecasts by the Use of Leading Indicators
Katja Drechsel, Sebastian Giesen, Axel Lindner
IWH Discussion Papers,
No. 4,
2014
Abstract
This study analyzes the performance of the IMF World Economic Outlook forecasts for world output and the aggregates of both the advanced economies and the emerging and developing economies. With a focus on the forecast for the current and the next year, we examine whether IMF forecasts can be improved by using leading indicators with monthly updates. Using a real-time dataset for GDP and for the indicators we find that some simple single-indicator forecasts on the basis of data that are available at higher frequency can significantly outperform the IMF forecasts if the publication of the Outlook is only a few months old.
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Economy Picking Up – Put Budget Surpluses To Good Use: Joint Economic Forecast Autumn 2013
Dienstleistungsauftrag des Bundesministeriums für Wirtschaft und Technologie,
2013
Abstract
The German economy is on the verge of an upturn driven by domestic demand. The improving global economic climate and decreasing uncertainty are fuelling investment. Private consumption is benefitting from favourable employment and income prospects. Real gross domestic product looks set to grow by 1.8 percent in 2014, after an increase of just 0.4 percent this year. Consumer prices are expected to rise by a moderate 1.6 percent this year and by 1.9 percent next year. The German public budget will continue to show a surplus.
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