Bottom-up or Direct? Forecasting German GDP in a Data-rich Environment
Katja Drechsel, Rolf Scheufele
Abstract
This paper presents a method to conduct early estimates of GDP growth in Germany. We employ MIDAS regressions to circumvent the mixed frequency problem and use pooling techniques to summarize efficiently the information content of the various indicators. More specifically, we investigate whether it is better to disaggregate GDP (either via total value added of each sector or by the expenditure side) or whether a direct approach is more appropriate when it comes to forecasting GDP growth. Our approach combines a large set of monthly and quarterly coincident and leading indicators and takes into account the respective publication delay. In a simulated out-of-sample experiment we evaluate the different modelling strategies conditional on the given state of information and depending on the model averaging technique. The proposed approach is computationally simple and can be easily implemented as a nowcasting tool. Finally, this method also allows retracing the driving forces of the forecast and hence enables the interpretability of the forecast outcome.
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Financial Factors in Macroeconometric Models
Sebastian Giesen
Volkswirtschaft, Ökonomie,
2013
Abstract
The important role of credit has long been identified as a key factor for economic development (see e.g. Wicksell (1898), Keynes (1931), Fisher (1933) and Minsky (1957, 1964)). Even before the financial crisis most researchers and policy makers agreed that financial frictions play an important role for business cycles and that financial turmoils can result in severe economic downturns (see e.g. Mishkin (1978), Bernanke (1981, 1983), Diamond (1984), Calomiris (1993) and Bernanke and Gertler (1995)). However, in practice researchers and policy makers mostly used simplified models for forecasting and simulation purposes. They often neglected the impact of financial frictions and emphasized other non financial market frictions when analyzing business cycle fluctuations (prominent exceptions include Kiyotaki and Moore (1997), Bernanke, Gertler, and Gilchrist (1999) and Christiano, Motto, and Rostagno (2010)). This has been due to the fact that most economic downturns did not seem to be closely related to financial market failures (see Eichenbaum (2011)). The outbreak of the subprime crises ― which caused panic in financial markets and led to the default of Lehman Brothers in September 2008 ― then led to a reconsideration of such macroeconomic frameworks (see Caballero (2010) and Trichet (2011)). To address the economic debate from a new perspective, it is therefore necessary to integrate the relevant frictions which help to explain what we have experienced during recent years.
In this thesis, I analyze different ways to incorporate relevant frictions and financial variables in macroeconometric models. I discuss the potential consequences for standard statistical inference and macroeconomic policy. I cover three different aspects in this work. Each aspect presents an idea in a self-contained unit. The following paragraphs present more detail on the main topics covered.
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Qual VAR Revisited: Good Forecast, Bad Story
Makram El-Shagi, Gregor von Schweinitz
Abstract
Due to the recent financial crisis, the interest in econometric models that allow to incorporate binary variables (such as the occurrence of a crisis) experienced a huge surge. This paper evaluates the performance of the Qual VAR, i.e. a VAR model including a latent variable that governs the behavior of an observable binary variable. While we find that the Qual VAR performs reasonably well in forecasting (outperforming a probit benchmark), there are substantial identification problems. Therefore, when the economic interpretation of the dynamic behavior of the latent variable and the chain of causality matter, the Qual VAR is inadvisable.
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East Germany: Number of subsidized employment has declined significantly
Hans-Ulrich Brautzsch
Wirtschaft im Wandel,
No. 11,
2012
Abstract
The share of subsidized employment on total employment has declined significantly. But it is still well above the West German level. The decline in subsidized employment is compensated by a sharp increase in non-supported employment. The decline in unemployment has flattened out.
Due to the lower economic growth in the forecasting horizon the number of employees will increase only slightly. Subsidized employment will further decline, also because of more efficient use of labour policy instruments this year. The unemployment rate will amount to 10.4% in 2012 and to 10.2% in 2013.
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Eurokrise dämpft Konjunktur – Stabilitätsrisiken bleiben hoch: Gemeinschaftsdiagnose Herbst 2012
Dienstleistungsauftrag des Bundesministeriums für Wirtschaft und Technologie,
2012
Abstract
Die deutsche Wirtschaft wird durch die Eurokrise belastet. Daher wird die konjunkturelle Expansion vorerst schwach bleiben und erst im Verlauf des kommenden Jahr wieder leicht anziehen. Die Institute prognostizieren eine Zunahme des Bruttoinlandsprodukts um 0,8% für das Jahr 2012 und um 1,0% für das Jahr 2013. Die Lage am Arbeitsmarkt wird sich dabei vorerst noch verschlechtern, die Zahl der Arbeitslosen wird 2013 geringfügig auf 2,9 Millionen steigen. Das Budget des Staates wird sowohl in diesem als auch im kommenden Jahr annähernd ausgeglichen sein. Kritisch sehen die Institute das Programm der EZB, Staatsanleihen von Krisenländern zu kaufen. Damit steigt die Inflationsgefahr.
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Mittelfristige Projektion der wirtschaftlichen Entwicklung
Oliver Holtemöller, Katja Drechsel, Brigitte Loose
Wirtschaft im Wandel,
No. 8,
2012
Abstract
Die konjunkturelle Schwächephase im Winterhalbjahr 2012/2013 wirkt sich auch auf das mittelfristige Wirtschaftswachstum in Deutschland aus. Unter Berücksichtigung der Herbstprognose 2012 von IWH und Kiel Economics ist nunmehr mit einer durchschnittlichen Wachstumsrate des Bruttoinlandsproduktes von 1¼% pro Jahr zwischen 2011 und 2017 zu rechnen. Dabei wird unterstellt, dass die Auslastung der deutschen Wirtschaft nach der vorübergehenden konjunkturellen Schwächephase überdurchschnittlich sein wird, weil die einheitliche europäische Geldpolitik in Deutschland noch längere Zeit expansiv wirken dürfte.
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