Has the Euro Increased International Price Elasticities?
Oliver Holtemöller, Götz Zeddies
IWH Discussion Papers,
No. 18,
2010
published in: Empirica
Abstract
This paper analyzes the role of common data problems when identifying structural breaks in small samples. Most notably, we survey small sample properties of the most commonly applied endogenous break tests developed by Brown, Durbin, and Evans (1975) and Zeileis (2004), Nyblom (1989) and Hansen (1992), and Andrews, Lee, and Ploberger (1996). Power and size properties are derived using Monte Carlo simulations. Results emphasize that mostly the CUSUM type tests are affected by the presence of heteroscedasticity, whereas the individual parameter Nyblom test and AvgLM test are proved to be highly robust. However, each test is significantly affected by leptokurtosis. Contrarily to other tests, where skewness is far more problematic than kurtosis, it has no additional effect for any of the endogenous break tests we analyze. Concerning overall robustness the Nyblom test performs best, while being almost on par to more recently developed tests in terms of power.
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Testing for Structural Breaks at Unknown Time: A Steeplechase
Makram El-Shagi, Sebastian Giesen
Abstract
This paper analyzes the role of common data problems when identifying structural breaks in small samples. Most notably, we survey small sample properties of the most commonly applied endogenous break tests developed by Brown, Durbin, and Evans (1975) and Zeileis (2004), Nyblom (1989) and Hansen (1992), and Andrews, Lee, and Ploberger (1996). Power and size properties are derived using Monte Carlo simulations. Results emphasize that mostly the CUSUM type tests are affected by the presence of heteroscedasticity, whereas the individual parameter Nyblom test and AvgLM test are proved to be highly robust. However, each test is significantly affected by leptokurtosis. Contrarily to other tests, where skewness is far more problematic than kurtosis, it has no additional effect for any of the endogenous break tests we analyze. Concerning overall robustness the Nyblom test performs best, while being almost on par to more recently developed tests in terms of power.
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The Dilemma of Delegating Search: Budgeting in Public Employment Services
Martin Altemeyer-Bartscher, J. T. Addison, T. Kuhn
IZA Discussion Papers, No. 5170,
No. 5170,
2010
Abstract
The poor performance often attributed to many public employment services may be explained in part by a delegation problem between the central office and local job centers. In markets characterized by frictions, job centers function as match-makers, linking job seekers with relevant vacancies. Because their search intensity in contacting employers and collecting data is not verifiable by the central authority, a typical moral hazard problem can arise. To overcome the delegation problem and provide high-powered incentives for high levels of search effort on the part of job centers, we propose output-related schemes that assign greater staff capacity to agencies achieving high strike rates.
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A Control Group Study of Incubators’ Impact to Promote Firm Survival
Michael Schwartz
Wirtschaft im Wandel,
No. 7,
2010
Abstract
For more than half a century, publicly funded business incubators (BIs) are at the heart of urban and regional technology and innovation policies. However, it is widely unclear as to whether start-up firms supported by publicly-initiated incubator initiatives have higher survival rates than comparable start-up firms that have not received support by such initiatives. The present article contributes to the underlying discussion by performing an empirical analysis of the long-term survival of 371 incubator firms (after their graduation) from five German BIs and contrasting these results with the long-term survival of a control group of 371 comparable non-incubated firms. The analysis covers a 10-year time span. For neither of the five incubator locations, we find statistically significant higher survival probabilities for firms located in incubators compared to firms located outside those incubator organizations. For three incubator locations the analysis even reveals statistically significant lower chances of survival for those start-ups receiving support by an incubator. We therefore arrive at the conclusion that being located in an incubator does not increase the chances of long-term business survival.
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FDI and the National Innovation System - Evidence from Central and Eastern Europe
Jutta Günther, Björn Jindra, Johannes Stephan
D. Dyker (ed.), Network Dynamics in Emerging Regions of Europe, Imperial College Press,
2010
Abstract
The paper investigates strategic motives, technological activities and determinants of foreign investment enterprises’ embeddedness in post-transition economies (Eastern Germany and selected Central East European countries). The empirical study makes use of the IWH FDI micro database. Results of the descriptive analysis of investment motives show that market access dominates over efficiency seeking and other motives. The majority of investors are technologically active in the region as a whole, but countries differ in terms of performance. The probit model estimations show that firm specific characteristics, among them innovativeness and autonomy from parent company, are important determinants of foreign investment enterprises’ embeddedness.
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Still Divided by Transformation? Characteristic Features of the German Innovation System and the Barriers to Extending it to East Germany
Peter Franz
D. Dyker (ed.), Network Dynamics in Emerging Regions of Europe, Imperial College Press,
2010
Abstract
This paper concentrates on various factors preventing the establishment of an efficient regional innovation system in East Germany. For this purpose in the third section the strengths and weaknesses of the all German innovation system are elaborated by means of patent statistics. The fourth section describes the evolution of the East German innovation system after 1990, lists the most important supportive political measures, and discusses several reasons for deficits in innovative performance. The fifth section concludes and presents suggestions for political intervention.
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Business Networks in the Leipzig, Dresden, Chemnitz and Halle Regions: Do Member Firms Locate in Spatial Proximity?
Gerhard Heimpold
Wirtschaft im Wandel,
No. 4,
2010
Abstract
The business landscape in East Germany mainly consists of small and medium-sized firms. This in mind, business networks may contribute to an improvement of the economic performance of firms which collaborate in business networks. For successful networking a mix of network members being locally concentrated on the one side and of partners from distant regions, especially from abroad, on the other side, is important. In regional economics, this duality is highlighted for two reasons: personal contacts of partners which are located in spatial proximity to each other may ease the transfer of tacit knowledge. The flow of tacit knowledge can be regarded as a factor which enhances innovation processes. However, the inclusion of partners from abroad is important, too. It facilitates access to the most advanced knowledge and technologies worldwide. The academic debate on networking regards a one-sided orientation on the local dimension of networking as risky due to possible lock-in effects. The empirical findings for 93 business networks existing in the regions of Leipzig, Dresden, Chemnitz and Halle, which are located in the southern part of East Germany, reveal a great proportion of network members concentrated locally: On average, this is the case with more than 50% of the network members. 10% of members are located in the other three city regions mentioned. More than one third of firms are located outside, in other German regions, of which around the half in the states of Saxony and Saxony-Anhalt. A minority of 2% is located abroad. However, for the transfer of externally existing knowledge other network members may be relevant, too. To illustrate: More than four fifths of the networks under investigation include public research units (universities etc.) which usually play an important role when it comes to an inter-regional and international knowledge transfer.
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Should We Trust in Leading Indicators? Evidence from the Recent Recession
Katja Drechsel, Rolf Scheufele
Abstract
The paper analyzes leading indicators for GDP and industrial production in Germany. We focus on the performance of single and pooled leading indicators during the pre-crisis and crisis period using various weighting schemes. Pairwise and joint significant tests are used to evaluate single indicator as well as forecast combination methods. In addition, we use an end-of-sample instability test to investigate the stability of forecasting models during the recent financial crisis. We find in general that only a small number of single indicator models were performing well before the crisis. Pooling can substantially increase the reliability of leading indicator forecasts. During the crisis the relative performance of many leading indicator models increased. At short horizons, survey indicators perform best, while at longer horizons financial indicators, such as term spreads and risk spreads, improve relative to the benchmark.
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Old Age Poverty – Causes and a Projection for 2023
Ingmar Kumpmann, Michael Gühne, Herbert S. Buscher
Abstract
Several factors bring about a rise in old age poverty in Germany, especially in East Germany. Using data from the German Socio-economic Panel (SOEP) we examine causes and extent of old age poverty in Germany. We begin our inquiry with a cross section regression in order to determine the impact of several factors on retirement incomes in Germany. In the second step we perform an income projection of today’s 50 to 55 year-old people for the year 2023. In doing so, we take into account different sources of income, including several forms of capital income and the calculated rent of owner-occupied houses and flats. We find a significant rise in old age poverty especially in East Germany as a consequence of rising unemployment after the German unification.
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