Evaluating the German (New Keynesian) Phillips Curve
Rolf Scheufele
IWH Discussion Papers,
No. 10,
2008
Abstract
This paper evaluates the New Keynesian Phillips Curve (NKPC) and its hybrid
variant within a limited information framework for Germany. The main interest rests on the average frequency of price re-optimization of firms. We use the labor income share as the driving variable and consider a source of real rigidity by allowing for a fixed firm-specific capital stock. A GMM estimation strategy is employed as well as an identification robust method that is based upon the Anderson-Rubin statistic. We find out that the German Phillips Curve is purely forward looking. Moreover, our point estimates are consistent with the view that firms re-optimize prices every two to three quarters. While these estimates seem plausible from an economic point of view, the uncertainties around these estimates are very large and also consistent with perfect nominal price rigidity where firms never re-optimize prices. This analysis also offers some explanations why previous results for the German NKPC based on GMM differ considerably. First, standard GMM results are very sensitive to the way how orthogonality conditions are formulated. Additionally, model misspecifications may be left undetected by conventional J tests. Taken together, this analysis points out
the need for identification robust methods to get reliable estimates for the NKPC.
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How Does Industry Specialization Affect the Efficiency of Regional Innovation Systems?
Michael Fritsch, Viktor Slavtchev
Jena Economic Research Papers, Nr. 2008-058,
No. 58,
2008
Abstract
This study analyzes the relationship between the specialization of a region in certain industries and the efficiency of the region in generating new knowledge. The efficiency measure is constructed by relating regional R&D input and output. An inversely u-shaped relationship is found between regional specialization and R&D efficiency, indicating the presence of externalities of both Marshall and Jacobs’ type. Further factors influencing efficiency are spillovers within the private sector as well as from public research institutions. The impact of both the specialization and the additional factors is, however, different for regions at different efficiency levels.
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Editorial
Martin T. W. Rosenfeld
Wirtschaft im Wandel,
No. 2,
2008
Abstract
Die Wirtschaftstheorie hat die räumliche Dimension des Wirtschaftens lange Zeit vernachlässigt. Spätestens durch die Ansätze der New Economic Geography hat sich in den Wirtschaftswissenschaften mittlerweile aber allgemein die Erkenntnis durchgesetzt, daß räumliche Nähe bzw. Ferne wichtige Faktoren für die Erklärung wirtschaftlicher Entwicklungsprozesse sind. Leider hat sich eine entsprechende Auffassung in der Politik bislang nur rudimentär verbreiten können. So werden wirtschafts- und finanzpolitische Entscheidungen nach wie vor zumeist ohne Beachtung ihrer räumlichen Konsequenzen diskutiert bzw. getroffen.
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New Limits of Municipal Economic Activity: Expansion versus Reduction?
Peter Haug
Wirtschaft im Wandel,
No. 12,
2007
Abstract
Das IWH veranstaltete unter Federführung der Abteilung Stadtökonomik am 11. und 12. Oktober 2007 zum zweiten Mal eine Tagung mit dem Themenschwerpunkt Kommunalwirtschaft. Das zentrale Anliegen der Veranstaltung war es, im Rahmen eines interdisziplinären Dialogs die räumlichen wie sachlichen Grenzen kommunaler Wirtschaftstätigkeit auszuloten. Das Kolloquium richtete sich dabei sowohl an einschlägig tätige Wissenschaftler als auch an Praktiker der Kommunalwirtschaft und -verwaltung, Verbandsvertreter, Politiker und andere Interessierte. Die Beiträge behandelten ein breites Themenspektrum. Ein Themenblock des ersten Konferenztags befaßte sich mit der teilweise kontroversen Bewertung der kommunalwirtschaftlichen Tätigkeit aus Sicht verschiedener Fachdisziplinen: Rechtswissenschaft, Volkswirtschaftslehre, öffentliche Betriebswirtschaftslehre und Soziologie. Daneben wurden ausgewählte Einzelbereiche der kommunalen Wirtschaftstätigkeit (ÖPNV, kommunale Wohnungswirtschaft) vertieft behandelt. Der zweite Konferenztag war den Themen Grenzen der Kommunalwirtschaft in Südeuropa, regionalwirtschaftliche Effekte kommunaler Wirtschaftstätigkeit und der Frage des Arbeitnehmerschutzes bei Privatisierungen gewidmet. Eine Podiumsdiskussion mit Vertretern aus Politik, Wissenschaft und Wirtschaft zur zukünftigen Bedeutung städtischer Firmen für die Finanz-, Wirtschafts- und Gesellschaftspolitik schloß die Veranstaltung ab. Als Resümee der Veranstaltung läßt sich ziehen, daß im kommunalen Sektor vieles in Bewegung ist, unter anderem aufgrund zunehmenden EU-Integration und der Liberalisierung des Energiesektors. Darüber hinaus wurde einer schrankenlosen räumlichen wie sachlichen Ausweitung der kommunalen Wirtschaftstätigkeit genauso eine Absage erteilt wie einer vollständigen Privatisierung der Kommunalwirtschaft.
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Industry Specialization, Diversity and the Efficiency of Regional Innovation Systems
Michael Fritsch, Viktor Slavtchev
Jena Economic Research Papers, Nr. 2007-018,
No. 18,
2007
Abstract
Innovation processes are characterized by a pronounced division of labor between actors. Two types of externality may arise from such interactions. On the one hand, a close location of actors affiliated to the same industry may stimulate innovation (MAR externalities). On the other hand, new ideas may be born by the exchange of heterogeneous and complementary knowledge between actors, which belong to different industries (Jacobs’ externalities). We test the impact of both MAR as well as Jacobs’ externalities on innovative performance at the regional level. The results suggest an inverted u-shaped relationship between regional specialization in certain industries and innovative performance. Further key determinants of the regional innovative performance are private sector R&D and university-industry collaboration.
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FDI versus exports: Evidence from German banks
Claudia M. Buch, A. Lipponer
Journal of Banking and Finance,
No. 3,
2007
Abstract
We use a new bank-level dataset to study the FDI-versus-exports decision for German banks. We extend the literature on multinational firms in two directions. First, we simultaneously study FDI and the export of cross-border financial services. Second, we test recent theories on multinational firms which show the importance of firm heterogeneity [Helpman, E., Melitz, M.J., Yeaple, S.R., 2004. Export versus FDI. American Economic Review 94 (1), 300–316]. Our results show that FDI and cross-border services are complements rather than substitutes. Heterogeneity of banks has a significant impact on the internationalization decision. More profitable and larger banks are more likely to expand internationally than smaller banks. They have more extensive foreign activities, and they are more likely to engage in FDI in addition to cross-border financial services.
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Advances in macroeconometric modeling: Papers and Proceedings of the 4th IWH Workshop in Macroeconometrics
Christian Dreger
Schriften des IWH,
No. 19,
2005
Abstract
This volume contains the contributions to the 4th Workshop of the Halle Institute for Economic Research IWH (www.iwh-halle.de) in macroeconometrics held in November 2003. The workshop takes place every year and is especially designed for the presentation of new work in the field of applied research.
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Network Access Charges, Vertical Integration, and Property Rights Structure
Christian Growitsch, Thomas Wein
Energy Economics,
No. 2,
2005
Abstract
After the deregulation of the German electricity markets in 1998, the German government opted for a regulatory regime called negotiated third party access, which would be subject to ex post control by the federal cartel office. Network access charges for new competitors are based on contractual arrangements between energy producers and industrial consumers. As the electricity networks are incontestable natural monopolies, the local and regional network operators are able to set (monopolistic) charges at their own discretion, limited only by their concerns over possible interference by the federal cartel office (Bundeskartellamt). In this paper we analyse if there is evidence for varying charging behaviour depending on a supplier`s economic independence (structure of property rights) or its level of vertical integration. For this purpose we hypothesise that incorporated and vertically integrated suppliers set different charges than independent utility companies. Multivariate estimations show a relation between network access charges and the network operator’s economic independence as well as level of vertical integration. On the low voltage level, for an estimated annual consumption of 1700 kW/h, vertically integrated firms set – as predicted by our hypothesis - significantly lower access charges than vertically separated suppliers, whereas incorporated network operators charge significantly higher charges compared to independent suppliers. There is insufficient evidence available to confirm these results for other consumptions or voltage levels.
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Economic Capability of East German Regions: Results of a Cluster Analysis
Franz Kronthaler
Regional Studies,
No. 6,
2005
Abstract
This paper analyses the economic capability of East German regions compared with West German regions. Based on new growth theory and new economic geography, and using relevant empirical literature, regions are clustered according to a set of growth factors. The clustering results find little evidence that the economic capability of East German regions is already comparable with West German regions. Economic disadvantages are particularly rooted in lower technical progress, a lack of entrepreneurship, lower business and industrial concentration, and a loss of human capital. However, there are a few East German regions with a high economic capability, but even those suffer from economic disadvantages such as lower technical progress, lower industrial activity and a poorer regional accessibility.
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The Contestable Markets Theory - Efficient Advice for Economic Policy
Christian Growitsch, Thomas Wein
Externe Publikationen,
2004
Abstract
During the nineties of the last century several formerly monopolistic markets (telecommunication, electricity, gas, and railway) have been deregulated in Germany based on European directives and theoretically inspired by the theory of contestable markets. The original contestable market theory implied three assumptions necessary to be satisfied to establish potential competition: Free market entry, market exit possible without any costs, and the price adjustment lag exceeding the entry lag. Our analysis shows that if the incumbent reduces its prices slowly (high adjustment lag) and the market entry can be performed quickly (low entry lag), a new competitor will be able to earn back sunk costs. Therefore it is not necessary that all three conditions be complied with for potential competition to exist. Applying this „revised“ contestable market theory to the deregulated sectors in Germany, natural monopolies can be identified in telecommunication sections local loops and local/regional connection networks, in the national electricity grid and the regional/local electricity distribution networks, in the national and regional/local gas transmission/distribution sections, and in the railroad network. These sections are not contestable due to sunk costs, expected high entry lags and a probably short price adjustment lag. They are identified as bottlenecks, which should be regulated. The function of system operators in energy and railroad are closely related to the non-contestable monopolistic networks.
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