Incubator Age and Incubation Time: Determinants of Firm Survival after Graduation?
Michael Schwartz
IWH Discussion Papers,
No. 14,
2008
Abstract
On the basis of a sample of 149 graduate firms from five German technology oriented business incubators, this article contributes to incubator/incubation literature by investigating the effects of the age of the business incubators and the firms’ incubation time in securing long-term survival of the firms after leaving the incubator facilities. The empirical findings from Cox-proportional hazards regression and parametric accelerated failure time models reveal a statistically negative impact for both variables incubator age and incubation time on post-graduation firm survival. One possible explanation for these results is that, when incubator managers become increasingly involved in various regional development activities (e.g. coaching of regional network initiatives), this may reduce the effectiveness of incubator support and therefore the survival chances of firms.
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In Search of the Best Solution – Four Models of Health Insurance
Ingmar Kumpmann
Wirtschaft im Wandel,
No. 11,
2008
Abstract
Für internationale Vergleiche von Krankenversicherungssystemen wird eine Klassifizierung von vier idealtypischen Modellen vorgeschlagen, an denen sich die existierenden Systeme orientieren: Bei staatlicher Versorgung herrscht Steuerfinanzierung und Anbindung der Gesundheitsversorgung an die Staatsverwaltung. Bei Monopolversicherung erfolgt die Finanzierung über Beiträge an einen Parafiskus. Bei Solidarischer Wettbewerbsordnung treten mehrere Versicherungen miteinander in Wettbewerb um Versicherte, bleiben dabei aber einer sozialpolitischen Regulierung unterworfen. In der privaten Krankenversicherung fehlt diese Regulierung und die Versicherung erfolgt bei privaten Unternehmen, die als reine Kostenerstatter auftreten.
Bei der Diskussion der Folgen der Modelle weisen theoretische Überlegungen darauf hin, dass monopolistische Versicherungsformen (staatliche Versorgung, Monopolversicherung) kostendämpfend wirken, da bei ihnen die Versicherung gegenüber den Leistungserbringern eine starke Verhandlungsposition besitzt. In einer Regressionsanalyse wird dies für 24 Industrieländer empirisch getestet und bestätigt. Hinsichtlich der Qualität der Versorgung zeigt sich, dass Modelle mit beitragsfinanzierten unabhängigen Versicherungskörperschaften (Monopolversicherung, Solidarische Wettbewerbsordnung, private Krankenversicherung) in Bezug auf Patientenrechte leistungsfähiger sind als das Modell staatlicher Versorgung.
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The Great Risk Shift? Income Volatility in an International Perspective
Claudia M. Buch
CESifo Working Paper No. 2465,
2008
Abstract
Weakening bargaining power of unions and the increasing integration of the world economy may affect the volatility of capital and labor incomes. This paper documents and explains changes in income volatility. Using a theoretical framework which builds distribution risk into a real business cycle model, hypotheses on the determinants of the relative volatility of capital and labor are derived. The model is tested using industry-level data. The data cover 11 industrialized countries, 22 manufacturing and services industries, and a maximum of 35 years. The paper has four main findings. First, the unconditional volatility of labor and capital incomes has declined, reflecting the decline in macroeconomic volatility. Second, the idiosyncratic component of income volatility has hardly changed over time. Third, crosssectional heterogeneity in the evolution of relative income volatilities is substantial. If anything, the labor incomes of high- and low-skilled workers have become more volatile in relative terms. Fourth, income volatility is related to variables measuring the bargaining power of workers. Trade openness has no significant impact.
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Forecasting Currency Crises: Which Methods signaled the South African Crisis of June 2006?
Tobias Knedlik, Rolf Scheufele
South African Journal of Economics,
2008
Abstract
In this paper we test the ability of three of the most popular methods to forecast South African currency crises with a special emphasis on their out-of-sample performance. We choose the latest crisis of June 2006 to conduct an out-of-sample experiment. The results show that the signals approach was not able to forecast the out-of-sample crisis correctly; the probit approach was able
to predict the crisis but only with models, that were based on raw data. The Markov-regime- switching approach predicts the out-of-sample crisis well. However, the results are not straightforward. In-sample, the probit models performed remarkably well and were also able to detect, at least to some extent, out-of-sample currency crises before their occurrence. The recommendation is to not restrict the forecasting to only one approach.
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Rents and Quality of Life in Eastern Germany
Dominik Weiß
IWH Discussion Papers,
No. 12,
2008
Abstract
Das Mietniveau zwischen Westdeutschland und Ostdeutschland unterscheidet sich im Durchschnitt um weniger als einen Euro. Dieser geringe Unterschied ist angesichts der wirtschaftlichen Schwäche und der hohen Leerstandsrate in Ostdeutschland erklärungsbedürftig.
An einem Sample deutscher Kommunen wird mit einem hedonischen Regressionsmodell der Einfluss lokaler Ausstattungsmerkmale auf die Mietpreise verschiedener Marktsegmente untersucht. Als erklärende Variablen werden demografische, wohnungsmarktbezogene und ökonomisch-raumstrukturelle Merkmale verwendet. Dabei werden im Modell Thesen über höhere Mietpreise berücksichtigt, die im Zusammenhang mit der transformationsbedingten Anpassung des ostdeutschen Wohnungsmarktes in den 1990er zu sehen sind. Ein zentrales Modellergebnis ist der Hinweis darauf, dass die Bestandssegmente in Ostdeutschland relativ zur Lebensqualität der Stadt überhöhte Mietniveaus aufweisen. Eine genauere Untersuchung der Gründe für diesen Mietpreisaufschlang sind wünschenswert, da weitere Abwanderung aus Ostdeutschland die regionalwirtschaftliche Folge einer zu hohen Miete sein könnte.
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Exchange Rates and FDI: Goods versus Capital Market Frictions
Claudia M. Buch, J. Kleinert
World Economy,
forthcoming
Abstract
Changes in exchange rates affect countries through their impact on cross-border activities such as trade and foreign direct investment (FDI). With increasing activities of multinational firms, the FDI channel is likely to gain in importance. Economic theory provides two main explanations why changes in exchange rates can affect FDI. According to the first explanation, FDI reacts to exchange rate changes if there are information frictions on capital markets and if investment depends on firms’ net worth (capital market friction hypothesis). According to the second explanation, FDI reacts to exchange rate changes if output and factor markets are segmented, and if firm-specific assets are important (goods market friction hypothesis). We provide a unified theoretical framework of these two explanations. We analyse the implications of the model empirically using a dataset based on detailed German firm-level data. We find greater support for the goods market than for the capital market friction hypothesis.
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Softening Competition by Inducing Switching in Credit Markets: A Correction
Jan Bouckaert, Hans Degryse, Jorge Fernández-Ruiz, Miguel García-Cestona
Journal of Industrial Economics,
No. 3,
2008
Abstract
In a recent article in this journal, Bouckaert and Degryse [2004] (denoted B&D) present a model in which banks strategically commit to disclosing borrower information. In this note, we point out an error in B&D and show that, although banks' information disclosure may indeed arise in equilibrium, it only does so if adverse selection is not too harsh.
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Monetary Policy and Financial (In)stability: An Integrated Micro–Macro Approach
Ferre De Graeve, Thomas Kick, Michael Koetter
Journal of Financial Stability,
No. 3,
2008
Abstract
Evidence on central banks’ twin objective, monetary and financial stability, is scarce. We suggest an integrated micro–macro approach with two core virtues. First, we measure financial stability directly at the bank level as the probability of distress. Second, we integrate a microeconomic hazard model for bank distress and a standard macroeconomic model. The advantage of this approach is to incorporate micro information, to allow for non-linearities and to permit general feedback effects between financial distress and the real economy. We base the analysis on German bank and macro data between 1995 and 2004. Our results confirm the existence of a trade-off between monetary and financial stability. An unexpected tightening of monetary policy increases the probability of distress. This effect disappears when neglecting microeffects and non-linearities, underlining their importance. Distress responses are largest for small cooperative banks, weak distress events, and at times when capitalization is low. An important policy implication is that the separation of financial supervision and monetary policy requires close collaboration among members in the European System of Central Banks and national bank supervisors.
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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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