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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Zeitpotential für berufliche Weiterbildung von Arbeitslosen wenig genutzt
Joachim Wilde, Birgit Schultz
Wirtschaft im Wandel,
No. 5,
2007
Abstract
In general, unemployed persons spend more time on further training than full-time employees. Using data of the latest time use survey (Zeitbudgeterhebung) of the Federal Statistical Office, this study analyzes whether this higher potential of time is being used or not. Furthermore, it describes which types of activities are made use of in particular. Heterogeneity due to different relevant socioeconomic characteristics in the two groups is eliminated by the appliance of a matching procedure.
Findings demonstrate that only around 15 % of the unemployed persons participate in further training activities off the job. In case of the full-time employment just under 40 % of the persons would take part. Relating to the average expenditure of time per week the difference decrease clearly. However, altogether the expenditure of time is not higher during unemployment.
A selection of subsamples points out different results, i.e. in some subsamples the expenditure of time for further training is larger during unemployment. However, in the subsample of low skilled persons these results are mainly caused by activities like hearing radio or watching TV. Thus, it is doubtful whether the higher expenditure of time qualifies for the primary labour market.
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Mikroökonometrische Evaluation der ökonomischen Wirkungen betrieblicher Mitbestimmung - Möglichkeiten und Grenzen des Matching-Ansatzes
Birgit Schultz
Jahrbücher für Nationalökonomie und Statistik,
No. 5,
2006
Abstract
The evaluation of economic effects of workers participation is not simple from the methodical point of view because of specific characteristics of establishments with works councils. Especially recent studies show contradictory results. In this study problems are pointed out, discussed, and options for solution are presented on the example of workers participation in East German establishments of industry and construction by the IAB-Establishment Panel.
An optimal matching-algorithm which supplies good matching-results for small samples to assign 'statistical establishment-twins' is applied. But by reason of very short primarily spells it can only calculate short time effects. Therefore, the matching method is additionally used to construct longer observation periods. By this new application establishments with recently founded works councils are matched with so called 'proxy establishments' with existing works councils. As a result short observation periods are prolonged and information about long-term effects can be given.
The effects on productivity, profitability and qualification level of employees show neither in short-term nor in long-term a significant impact on workers' participation.
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Microeconometric Evaluation of Selected ESF-funded ALMP-Programmes
Eva Reinowski, Birgit Schultz
IWH Discussion Papers,
No. 17,
2006
Abstract
The study evaluates different ESF-funded labour market programmes by comparing the labour market status at different points in time after the treatment. In order to solve the selection problem we employ a standard matching algorithm with a multi-dimensional distance measure. The effects of the analyzed programmes (wage subsidies, start-up subsidies and qualification measures for recipients of social welfare) are very heterogeneous. It can be observed that the direct integration into the regular labour market provides an advantage for the supported individuals. Its lasting effects, however, strongly depend on the group of persons being supported, the type of treatment and the employers’ financial share.
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Progressivity and flexibility in developing an effective competition regime: using experiences of Poland, Ukraine and South Africa for developing countries. Forschungsbericht innerhalb des EU-Projektes: Competition Policy Foundations for Trade Reform, Regulatory Reform, and Sustainable Development, 2005
Franz Kronthaler, Johannes Stephan
One-off Publications,
No. 5,
2005
Abstract
The paper discusses the role of the concept of special and differential treatment in the framework of regional trade agreements for the development of a competition regime. After a discussion of the main characteristics and possible shortfalls of those concepts, three case countries are assessed in terms of their experience with progressivity, flexibility, and technical and financial assistance: Poland was led to align its competition laws to match the model of the EU. The Ukraine opted voluntarily for the European model, this despite its intense integration mainly with Russia. South Africa, a developing country that emerged from a highly segregated social fabric and an economy dominated by large conglomerates with concentrated ownership. All three countries enacted (or comprehensively reformed) their competition laws in an attempt to face the challenges of economic integration and catch up development on the one hand and particular social problems on the other. Hence, their experience may be pivotal for a variety of different developing countries who are in negotiations to include competition issues in regional trade agreements. The results suggest that the design of such competition issues have to reflect country-particularities to achieve an efficient competition regime.
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Options and Limits of the Matching Approach – An Application to Workers Participation
Birgit Schultz
IWH Discussion Papers,
No. 15,
2006
Abstract
The evaluation of economic effects of workers participation is not simple from the methodical point of view because of specific characteristics of establishments with works councils. Especially recent studies show contradictory results. In this study problems are pointed out, discussed, and options for solution are presented on the example of workers participation in East German establishments of industry and construction by the IABEstablishment Panel. An optimal matching-algorithm which supplies good matching-results for small samples to assign ‘statistical establishment-twins’ is applied. But by reason of very short primarily spells it can only calculate short time effects. Therefore, the matching method is additionally used to construct longer observation periods. By this new application establishments with recently founded works councils are matched with so called ‘proxy establishments’ with existing works councils. As a result short observation periods are prolonged and information about long-term effects can be given. The effects on productivity, profitability and qualification level of employees show neither in short-term nor in long-term a significant impact on workers’ participation.
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Longterm development of return on assets – an empirical panel data analysis
Olaf Neubert
Wirtschaft im Wandel,
No. 5,
2006
Abstract
One of the basic propositions of economic theory is the fact that competition does not allow permanent very high or very low returns. But how can the permanent surplus gain of a monopolist be distinguished from innovation gains? In which markets is a regulatory interference necessary? Contrary to the static analysis, the concept of dynamic competition explicitly considers the temporal development of return and gain. An entrepreneur can achieve an advantage over the competitors through new products or new production processes. Hence arising innovation gains function as incentives for imitators to join the development which in turn leads to a reduction of the surplus gains. Thus, these gains are not contradictory to an effective competition. On the basis of annual balance sheets of German firms, this article analyses the temporal development of returns on assets. It is to evaluate whether the adaptation process assumed by Schumpeter that matches very high and very low gains with a longterm level can be confirmed, and how fast this process works. The average industry returns of the manufacturing industry show a convergence to a longterm level. During this process, an average of 40% of the deviation from the longterm level are melted every year. However, the analysis of company returns shows longterm differences. The adaptation rate of companies, 50%, is significantly higher compared to the industry value. The analysis of the connection between the adaptation rate and the longterm return level of companies proves that companies which face above-average competition strength obtain a higher longterm return level than other companies. When firms operate within markets with high stress of competition they do not achieve below-average returns but rather significantly above-average returns in the long term.
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Progressivity and Flexibility in Developing an Effective Competition Regime: Using Experiences of Poland, Ukraine, and South Africa for developing countries
Franz Kronthaler, Johannes Stephan
IWH Discussion Papers,
No. 6,
2006
Abstract
The paper discusses the role of the concept of special and differential treatment in the framework of regional trade agreements for the development of a competition regime. After a discussion of the main characteristics and possible shortfalls of those concepts, three case countries are assessed in terms of their experience with progressivity, flexibility, and technical and financial assistance: Poland was led to align its competition laws to match the model of the EU. The Ukraine opted voluntarily for the European model, this despite its intense integration mainly with Russia. South Africa, a developing country that emerged from a highly segregated social fabric and an economy dominated by large conglomerates with concentrated ownership. All three countries enacted (or comprehensively reformed) their competition laws in an attempt to face the challenges of economic integration and catch up development on the one hand and particular social problems on the other. Hence, their experience may be pivotal for a variety of different developing countries who are in negotiations to include competition issues in regional trade agreements. The results suggest that the design of such competition issues have to reflect country-particularities to achieve an efficient competition regime.
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Wirkungsanalyse der Wirtschaftsförderung in Ostdeutschland
Joachim Ragnitz, Harald Lehmann
Mittelstandsfinanzierung, Basel II und die Wirkung öffentlicher sowie privater Kapitalhilfen.,
2005
Abstract
In wenigen Regionen ist so massiv Wirtschaftsförderung betrieben worden wie in Ostdeutschland seit der deutschen Einheit. Das grundsätzliche Erfordernis, die Effektivität der Wirtschaftsförderung zu überprüfen, wird durch beihilferechtliche Vorgaben der EU, Haushaltszwänge und ad-hoc Überlegungen der beteiligten Ministerien verstärkt. Gleichwohl sind solche Analysen aufgrund methodischer und statistischer Probleme recht rar und eher selektiv. Das IWH hat vor diesem Hintergrund anhand der sich für eine Matching-Analyse anbietenden IAB-Betriebspanel-Daten und der Fördermaßnahme "GA-Investitionszuschuss" untersucht, wie die Förderung speziell auf das Investitionsverhalten der Betriebe im Verarbeitenden Gewerbe wirkt. Die Ergebnisse zeigen, dass der GA-Investitionszuschuss Mehrinvestitionen induziert hat, was anders als bei pauschalen Förderinstrumenten durch die individuell ausgestalteten Fördervoraussetzungen begünstig wurde. Letztlich entscheidend ist aber die Rentabilität der geförderten zusätzlichen Investitionsvorhaben und deren Effekte auf die Wettbewerbsfähigkeit der Betriebe und die Beschäftigungssituation in Ostdeutschland. Diese zeigen sich erst in der zeitlichen Entwicklung und lassen sich mangels statistischer Informationen nur anhand von Indizien abschätzen.
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Evaluation of Further Training Programmes with an Optimal Matching Algorithm
Eva Reinowski, Birgit Schultz, Jürgen Wiemers
Swiss Journal of Economics and Statistics,
2005
Abstract
This paper evaluates the effects of further training on the unemployment duration of different groups of persons representing individual characteristics and some aspects of the economic environment. The Micro Census Saxony enables us to include the employment history as a proxy for unobserved variables and to avoid Ashenfelters Dip. We employ an optimal full matching assignment, which is superior to greedy pair matching in the sense that it avoids the loss of observations due to the design of the algorithm. Overall, we find empirical evidence that participation in further training programmes results in even longer unemployment, with only gradual differences.
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