Does Qualification Drive Innovation? A Microeconometric Analysis Using Linked-employer-employee Data
Bianca Brandenburg, Jutta Günther, Lutz Schneider
IWH Discussion Papers,
No. 10,
2007
Abstract
Degree-level science and engineering skills as well as management and leadership skills are often referred to as a source of innovative activities within companies. Broken down by sectoral innovation patterns, this article examines the role of formal education and actual occupation for product innovation performance in manufacturing firms within a probit model. It uses unique micro data for Germany (LIAB) that contain detailed information about innovative activities and the qualification of employees. We find significant differences of the human capital endowment between sectors differentiated according to the Pavitt classification. Sectors with a high share of highly skilled employees engage in product innovation above average (specialized suppliers and science based industries). According to our hitherto estimation results, within these sectors the share of highly skilled employees does not, however, substantially increase the probability to be an innovative firm.
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Systematic Mispricing in European Equity Prices?
Marian Berneburg
IWH Discussion Papers,
No. 6,
2007
Abstract
One empirical argument that has been around for some time and that clearly contra- dicts equity market efficiency is that market prices seem too volatile to be optimal estimates of the present value of future discounted cash flows. Based on this, it is deduced that systematic pricing errors occur in equity markets which hence can not be efficient in the Effcient Market Hypothesis sense. The paper tries to show that this so-called excess volatility is to a large extend the result of the underlying assumptions, which are being employed to estimate the present value of cash flows. Using monthly data for three investment style indices from an integrated European Equity market, all usual assumptions are dropped. This is achieved by employing the Gordon Growth Model and using an estimation process for the dividend growth rate that was suggested by Barsky and De Long. In extension to Barsky and De Long, the discount rate is not assumed at some arbitrary level, but it is estimated from the data. In this manner, the empirical results do not rely on the prerequisites of sta- tionary dividends, constant dividend growth rates as well as non-variable discount rates. It is shown that indeed volatility declines considerably, but is not eliminated. Furthermore, it can be seen that the resulting discount factors for the three in- vestment style indices can not be considered equal, which, on a risk-adjusted basis, indicates performance differences in the investment strategies and hence stands in contradiction to an efficient market. Finally, the estimated discount rates under- went a plausibility check, by comparing their general movement to a market based interest rate. Besides the most recent data, the estimated discount rates match the movements of market interest rates fairly well.
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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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Interregional equalization policy in focus: Donor regions and beneficiary regions and their economic performance
Gerhard Heimpold, Peter Franz
Wirtschaft im Wandel,
No. 11,
2006
Abstract
Die Zukunft interregionaler Ausgleichspolitik wird derzeit intensiv diskutiert. Während in der Vergangenheit das Interesse der Ausgleichspolitik primär den Nehmerregionen und den dort erzielten Wirkungen galt, richtet sich neuerdings der Blick auch auf die „Geber“. Bei letzteren werden wachstumsdämpfende Entzugseffekte befürchtet, die angesichts rückläufiger gesamtwirtschaftlicher Wachstumsraten Anlaß böten, über die Zukunft der Ausgleichspolitik nachzudenken. Das IWH hat sich zusammen mit zwei Projektpartnern in diese Debatte durch eine Untersuchung eingebracht, die im Auftrag des Bundesamtes für Bauwesen und Raumordnung durchgeführt wurde. Im folgenden werden vom IWH gewonnene Befunde wiedergegeben, wie Nehmerund Geberregionen hinsichtlich ihrer Wirtschaftsleistung dastehen und welche Entwicklungsmuster sich im Zeitverlauf zeigen. Bezüglich des Niveaus der Wirtschaftsleistung, die am Bruttoinlandsprodukt (BIP) je Einwohner gemessen wurde, zeigt sich erwartungsgemäß, daß die Geberregionen, allesamt westdeutsche Regionen, im Zeitraum 1992-2003 ein überdurchschnittliches BIP je Einwohner aufweisen; die Nehmerregionen, und zwar sowohl die ost- als auch (weniger stark) die westdeutschen dagegen ein unterdurchschnittliches. Bezüglich der Entwicklung der Wirtschaftsleistung, die anhand der Veränderungen beim relativen BIP je Einwohner (BIP je Einwohner der betreffenden Region in Relation zum Bundesdurchschnitt) gemessen wurde, zeigt sich, daß die ostdeutschen Nehmerregionen zunächst stark aufholen konnten, sich dieser Aufholprozeß jedoch nach 1998 deutlich abgeschwächt hat. Spiegelbildlich hat sich der Vorsprung der Geberregionen gegenüber dem bundesdurchschnittlichen BIP je Einwohner verringert, d. h., deren relatives BIP pro Kopf ging insgesamt zurück. Absolut gesehen stieg es jedoch. Eine ganze Reihe ostdeutscher Regionen, die 1992-1998 wachstumsstark waren, konnte diese Entwicklung danach nicht fortsetzen. Umgekehrt gehörte eine größere Zahl westdeutscher Regionen, die 1992-1998 ein stagnierendes oder rückläufiges relatives BIP je Einwohner aufwiesen, danach wieder zu den wachstumsstarken Räumen. Zusätzlich wurden die Beiträge der Regionen zum absoluten Zuwachs des BIP im Zeitraum 1998-2003 ermittelt: 30 von 271 Regionen erbringen etwa die Hälfte des gesamtwirtschaftlichen BIP-Zuwachses, davon sind 28 in Westdeutschland gelegen, 21 von ihnen sind Geberregionen. Dies spricht dafür, daß die Politik dafür sorgen sollte, den Regionen, die am meisten zur Zunahme der gesamtwirtschaftlichen Leistung beitragen (und damit die wirtschaftlichen Grundlagen für die interregionale Ausgleichspolitik schaffen), weiterhin günstige Entwicklungsbedingungen zu sichern.
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Measurement Matters — Alternative Input Price Proxies for Bank Efficiency Analyses
Michael Koetter
Journal of Financial Services Research,
No. 2,
2006
Abstract
Most bank efficiency studies that use stochastic frontier analysis (SFA) employ each bank’s own implicit input price when estimating efficient frontiers. But at the same time, most studies are based on cost and/or profit models that assume perfect input markets. Traditional input price proxies therefore contain at least substantial measurement error. We suggest here two alternative input market definitions to approximate exogenous input prices. We have access to Bundesbank data, which allows us to cover virtually all German universal banks between 1993 and 2003. The use of alternative input price proxies leads to mean cost efficiency that is significantly five percentage points lower compared to traditional input prices. Mean profit efficiency is hardly affected. Across models, small cooperative banks located in large western states perform best while large banks and those located in eastern states rank lowest.
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Excess Volatility in European Equity Style Indices - New Evidence
Marian Berneburg
IWH Discussion Papers,
No. 16,
2006
Abstract
Are financial markets efficient? One proposition that seems to contradict this is Shiller’s finding of excess volatility in asset prices and its resulting rejection of the discounted cash flow model. This paper replicates Shiller’s approach for a different data set and extends his analysis by testing for a long-run relationship by means of a cointegration analysis. Contrary to previous studies, monthly data for an integrated European stock market is being used, with special attention to equity style investment strategies. On the basis of this analysis’ results, Shiller’s findings seem questionable. While a long-run relationship between prices and dividends can be observed for all equity styles, a certain degree, but to a much smaller extent than in Shiller’s approach, of excess volatility cannot be rejected. But it seems that a further relaxation of Shiller’s assumptions would completely eliminate the finding of an overly strong reaction of prices to changes in dividends. Two interesting side results are, that all three investment styles seem to have equal performance when adjusting for risk, which by itself is an indication for efficiency and that market participants seem to use current dividend payments from one company as an indication for future dividend payments by other firms. Overall the results of this paper lead to the conclusion that efficiency cannot be rejected for an integrated European equity market.
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The contribution of wage developments to labour market performance. DG ECFIN, European Economy, Special Report 1/2005
Herbert Buscher, Christian Dreger, Manuel Artís, Miquel Clar, Raúl Ramos
,
2005
Abstract
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Economies of Scope in European Railways: An Efficiency Analysis
Christian Growitsch, Heike Wetzel
IWH Discussion Papers,
No. 5,
2006
Abstract
In the course of railway reforms in the end of the last century, national European governments, as well the EU Commission, decided to open markets and to separate railway networks from train operations. Vertically integrated railway companies – companies owning a network and providing transport services – argue that such a separation of infrastructure and operations would diminish the advantages of vertical integration and would therefore not be suitable to raise economic welfare. In this paper, we conduct a pan-European analysis to investigate the performance of European railways with a particular focus on economies of vertical integration. We test the hypothesis that integrated railways realise economies of joint production and, thus, produce railway services on a higher level of efficiency. To determine whether joint or separate production is more efficient we apply a Data Envelopment Analysis super-efficiency bootstrapping model which relates the efficiency for integrated production to a virtual reference set consisting of the separated production technology. Our findings are that in a majority of European Railway companies exist economies of scope.
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Determinants of employment - the macroeconomic view
Christian Dreger, Heinz P. Galler, Ulrich (eds) Walwai
Schriften des IWH,
No. 22,
2005
Abstract
The weak performance of the German labour market over the past years has led to a significant unemployment problem. Currently, on average 4.5 mio. people are without a job contract, and a large part of them are long-term unemployed. A longer period of unemployment reduces their employability and aggravates the problem of social exclusion.
The factors driving the evolution of employment have been recently discussed on the workshop Determinanten der Beschäftigung – die makroökonomische Sicht organized jointly by the IAB, Nuremberg, and the IWH, Halle. The present volume contains the papers and proceedings to the policy oriented workshop held in November 2004, 15-16th. The main focus of the contributions is twofold. First, macroeconomic conditions to stimulate output and employment are considered. Second, the impacts of the increasing tax wedge between labour costs and the take home pay are emphasized. In particular, the role of the contributions to the social security system is investigated.
In his introductory address, Ulrich Walwei (IAB) links the unemployment experience to the modest path of economic growth in Germany. In addition, the low employment intensity of GDP growth and the temporary standstill of the convergence process of the East German economy have contributed to the weak labour market performance. In his analysis, Gebhard Flaig (ifo Institute, München) stresses the importance of relative factor price developments. A higher rate of wage growth leads to a decrease of the employment intensity of production, and correspondingly to an increase of the threshold of employment. Christian Dreger (IWH) discusses the relevance of labour market institutions like employment protection legislation and the structure of the wage bargaining process on the labour market outcome. Compared to the current setting, policies should try to introduce more flexibility in labour markets to improve the employment record. The impact of interest rate shocks on production is examined by the paper of Boris Hofmann (Deutsche Bundesbank, Frankfurt). According to the empirical evidence, monetary policy cannot explain the modest economic performance in Germany. György Barabas and Roland Döhrn (RWI Essen) have simulated the effects of a world trade shock on output and employment. The relationships have been fairly stable over the past years, even in light of the increasing globalization. Income and employment effects of the German tax reform in 2000 are discussed by Peter Haan and Viktor Steiner (DIW Berlin). On the base of a microsimulation model, household gains are determined. Also, a positive relationship between wages and labour supply can be established. Michael Feil und Gerd Zika (IAB) have examined the employment effects of a reduction of the contribution rates to the social security system. To obtain robust results, the analysis is done under alternative financing scenarios and with different macroeconometric models. The impacts of allowances of social security contributions on the incentives to work are discussed by Wolfgang Meister and Wolfgang Ochel (ifo München). According to their study, willingness to work is expected to increase especially at the lower end of the income distribution. The implied loss of contributions could be financed by higher taxes.
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The Impact of Institutions on the Employment Performance in European Labour Markets
Herbert S. Buscher, Christian Dreger, Raúl Ramos, Jordi Surinach
Discussion Paper No. 1732,
2005
Abstract
Der Beitrag untersucht die Bedeutung von institutionellen Regelungen auf den Arbeitsmärkten in den Staaten der EU. Da die Beschäftigungsquoten relativ unverändert blieben in der Vergangenheit, stellt sich Arbeitslosigkeit im wesentlichen als ein Problem der Arbeitsnachfrage dar. Die Arbeitsnachfrage enthält neben den üblichen Variablen weitere Variablen, die die institutionellen Rahmenbedingungen erfassen wie Gewerkschaftsdichte, Verhandlungsmacht, Steuer- und Abgabensystem, Maße der aktiven Arbeitsmarktpolitik etc.
Da zwischen den Modellvariablen Kointegrationsbeziehungen bestehen, werden die Gleichungen in Niveaus geschätzt. Die sich hieraus ergebenden Elastizitäten werden in einem zweiten Schritt dann durch institutionelle Variablen erklärt, was in einem Fixed-effects-Modell geschieht. Die Ergebnisse zeigen, dass mit steigender Flexibilität des Arbeitsmarktes und mit wachsenden Anreizen für die Haushalte Arbeit aufzunehmen, die Beschäftigungsquoten zunehmen.
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