Monopolistic Competition and Costs in the Health Care Sector
Ingmar Kumpmann
IWH Discussion Papers,
No. 17,
2009
Abstract
Competition among health insurers is widely considered to be a means of enhancing efficiency and containing costs in the health care system. In this paper, it is argued that this could be unsuccessful since health care providers hold a strong position on the market for health care services. Physicians exert a type of monopolistic power which can be described by Chamberlin’s model of monopolistic competition. If many health insurers compete with one another, they cannot counterbalance the strong bargaining position of the physicians. Thus, health care expenditure is higher, financing either extra profits for physicians or a higher number of them. In addition, health insurers do not have an incentive to contract selectively with health care providers as long as there are no price differences between physicians. A monopolistic health insurer is able to counterbalance the strong position of physicians and to achieve lower costs.
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The Gender Pay Gap under Duopsony: Joan Robinson meets Harold Hotelling
Boris Hirsch
Scottish Journal of Political Economy,
No. 5,
2009
Abstract
This paper presents an alternative explanation of the gender pay gap resting on a simple Hotelling-style duopsony model of the labour market. Since there are only two employers, equally productive women and men have to commute and face travel cost to do so. We assume that some women have higher travel cost, e.g., due to more domestic responsibilities. Employers exploit that women on average are less inclined to commute and offer lower wages to all women. Since women's firm-level labour supply is for this reason less wage-elastic, this model is in line with Robinson's explanation of wage discrimination.
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The ADR Shadow Exchange Rate as an Early Warning Indicator for Currency Crises
Stefan Eichler, Alexander Karmann, Dominik Maltritz
Journal of Banking and Finance,
No. 11,
2009
Abstract
We develop an indicator for currency crisis risk using price spreads between American Depositary Receipts (ADRs) and their underlyings. This risk measure represents the mean exchange rate ADR investors expect after a potential currency crisis or realignment. It makes crisis prediction possible on a daily basis as depreciation expectations are reflected in ADR market prices. Using daily data, we analyze the impact of several risk drivers related to standard currency crisis theories and find that ADR investors perceive higher currency crisis risk when export commodity prices fall, trading partners’ currencies depreciate, sovereign yield spreads increase, or interest rate spreads widen.
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Cartel Identification in Spatial Markets: An Analysis of the East German Cement Market
Ulrich Blum
Jahrbuch für Regionalwissenschaft,
2009
Abstract
Im Jahr 2003 wurde die deutsche Zementindustrie wegen vorgeblicher Preis- und Quotenabsprachen mit einer Buße von über 600 Mio. Euro belegt. Im abschließenden gerichtlichen Verfahren des Jahres 2009 wurde die Buße erheblich reduziert, weil das Bundeskartellamt nicht in der Lage war, die Mehrerlöse in der vorgegebenen Höhe nachzuweisen. Dieser Beitrag zeigt anhand des ostdeutschen Zementkartells, das auf Quotenabsprachen aus den neunziger Jahren beruhte und das im Frühjahr 2002 endete, dass dieses ökonomisch nicht wirksam war. Aus Sicht der Beteiligten waren offensichtlich die Kenntnisse der wahren Marktkräfte unbekannt, weshalb das Kartell beibehalten wurde. Auf Grundlage eines räumlichen Ansatzes für die Jahre 1997 bis 2002 wird das regionale Preissetzungsverhalten untersucht. Die ökonometrische Analyse zeigt, dass der Wettbewerb in den Kartelljahren bereits vergleichsweise intensiv war, da Transportkosten und Rabattsysteme verwendet wurden, um Angebote der Marktlage anzupassen. Strategische Importe aus dem Osten ebenso wie Angebote mittelständischer Mahlwerke setzten den Markt unter Druck.
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Inflation Expectations: Does the Market Beat Professional Forecasts?
Makram El-Shagi
IWH Discussion Papers,
No. 16,
2009
Abstract
The present paper compares expected inflation to (econometric) inflation forecasts
based on a number of forecasting techniques from the literature using a panel of
ten industrialized countries during the period of 1988 to 2007. To capture expected
inflation we develop a recursive filtering algorithm which extracts unexpected inflation from real interest rate data, even in the presence of diverse risks and a potential Mundell-Tobin-effect.
The extracted unexpected inflation is compared to the forecasting errors of ten
econometric forecasts. Beside the standard AR(p) and ARMA(1,1) models, which
are known to perform best on average, we also employ several Phillips curve based approaches, VAR, dynamic factor models and two simple model avering approaches.
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A Simple Macro Model of Original Sin based on Optimal Price Setting under Incomplete Information
Axel Lindner
International Economics and Economic Policy,
2009
Abstract
This paper analyses the consequences of “original sin“ (the fact that the currency of an emerging market economy usually cannot be used to borrow abroad) for macroeconomic stability. The approach is based on third-generation models of currency crises, but differs from alternative versions by explicitly modeling the price setting behavior of firms if prices are sticky and there is incomplete information about the future exchange rate. It is shown that a small depreciation is beneficial, but a large one is detrimental.
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Smuggling Illegal versus Legal Goods across the U.S.-Mexico Border: A Structural Equations Model Approach
A. Buehn, Stefan Eichler
Southern Economic Journal,
No. 2,
2009
Abstract
We study the smuggling of illegal and legal goods across the U.S.-Mexico border from 1975 to 2004. Using a Multiple Indicators Multiple Causes (MIMIC) model we test the microeconomic determinants of both smuggling types and reveal their trends. We find that illegal goods smuggling decreased from $116 billion in 1984 to $27 billion in 2004 as a result of improved labor market conditions in Mexico and intensified U.S. border enforcement. Smuggling legal goods is motivated by tax and tariff evasion. While export misinvoicing fluctuated at low levels, import misinvoicing switched from underinvoicing to overinvoicing after Mexico's accession to the GATT and the North American Free Trade Agreement (NAFTA) induced lower tariffs.
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Returning to East Germany: Labour Market Success Reduces Re-migration Potential
D. Wiest, Lutz Schneider, Alexander Kubis
Wirtschaft im Wandel,
No. 9,
2009
Abstract
Die Abwanderung überwiegend junger gebildeter Menschen aus Ostdeutschland wird häufig, vor allem vor dem Hintergrund der bedenklichen demographischen Entwicklung, als nachteilig für die Entwicklungsfähigkeit und den Aufholprozess der Neuen Länder betrachtet. Das Phänomen der Zuwanderung und dabei nicht zuletzt der Rückwanderung vormals Abgewanderter fand in diesem Zusammenhang bisher vergleichsweise wenig Beachtung, obwohl einiges darauf hindeutet, dass hierin das eigentliche Migrationsproblem Ostdeutschlands liegt.
Die vorliegende Arbeit analysiert auf Basis eines im Rahmen des DFG-Forschungsprojektes „Brain drain aus Ostdeutschland“ am Lehrstuhl für Sozialgeographie der Martin-Luther-Universität Halle-Wittenberg erhobenen Datensatzes zu den Einstellungen und Motivlagen aus Sachsen-Anhalt abgewanderter junger Menschen, welche Faktoren die Neigung zu einer Rückkehr nach Sachsen-Anhalt erklären. Dabei wird auf zwei Aspekte besonderer Wert gelegt: erstens auf die Wirkung des Arbeitsmarkterfolges nach der Abwanderung, zweitens auf den Einfluss sozialer Bindungen in der Herkunfts- und der Zielregion auf die Rückkehrbereitschaft der abgewanderten Menschen.
Im Ergebnis bestätigt die ökonometrische Analyse des Rückkehrpotenzials die aus der Theorie heraus erwarteten Wirkungsrichtungen der untersuchten Einflussgrößen. Zum einen dämpft der individuelle Arbeitsmarkterfolg in der Zielregion die Rückkehrneigung, was im Umkehrschluss eine „Negativselektion“ bzw. eine erhöhte Rückkehrbereitschaft derer bedeutet, deren Erwartungen an die Zielregion enttäuscht wurden. Zum anderen konnte die rückwanderungsfördernde Wirkung bestehender sozialer Bindungen zum Herkunftsgebiet nachgewiesen werden.
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Openness and Growth: The Long Shadow of the Berlin Wall
Claudia M. Buch, Farid Toubal
Journal of Macroeconomics,
No. 3,
2009
Abstract
The question whether international openness causes higher domestic growth has been subject to intense discussions in the empirical growth literature. This paper addresses the issue in the context of the fall of the Berlin Wall in 1989. We analyze whether the slow convergence in per capita incomes between East and West Germany and the lower international openness of East Germany are linked. We address the endogeneity of openness by adapting the methodology proposed by Frankel and Romer (1999) to a panel framework. We instrument openness with time-invariant exogenous geographic variables and time-varying exogenous policy variables. We also distinguish the impact of different channels of integration. Our paper has three main findings. First, geographic variables have a significant impact on regional openness. Second, controlling for geography, East German states are less integrated into international markets along all dimensions of integration considered. Third, the degree of openness for trade has a positive impact on regional income per capita.
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Financial constraints and the margins of FDI
Claudia M. Buch
Bundesbank Discussion Paper 29/2009,
2009
Abstract
Recent literature on multinational firms has stressed the importance of low productivity as a barrier to the cross-border expansion of firms. But firms may also need external finance to shoulder the costs of entering foreign markets. We develop a model of multinational firms facing real and financial barriers to foreign direct investment (FDI), and we analyze their impact on the FDI decision (the extensive margin) and foreign affiliate sales (the intensive margin). We provide empirical evidence based on a detailed dataset of German multinationals which contains information on parent-level and affiliate-level financial constraints as well as about the location the foreign affiliates. We find that financial factors constrain firms’ foreign investment decisions, an effect felt in particular by large firms. Financial constraints at the parent level matter for the extensive, but less
so for the intensive margin. For the intensive margin, financial constraints at the affiliate level are relatively more important.
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