Modelle für die Zukunft der gesetzlichen Krankenversicherung
Ingmar Kumpmann
Kostenträger Entscheiderbrief 4/2009,
2009
Abstract
A discussion of different health insurance models and implications for the German health care system.
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Warum exportiert der Osten so wenig? Eine empirische Analyse der Exportaktivitäten deutscher Bundesländer
Götz Zeddies
AStA - Wirtschafts- und Sozialstatistisches Archiv,
No. 4,
2009
Abstract
In the aftermath of re-unification, East German exports declined around 70% due to the breakdown of COMECON trade. Although since the mid-1990s export growth rates of the New Federal States were higher than those of their West German counterparts, export performance of East German States measured by the share of exports in GDP is still comparatively poor. Whereas for a long time the low export performance of East German producers was ascribed to competitive disadvantages, in the meantime structural deficits on the micro and/or macro level are often considered as the main reason. Using bilateral trade data of German Federal States, the present paper shows on the basis of an orthodox gravity model of trade that East German exports are explicitly lower than predicted by the model. But if the gravity model is augmented by additional variables representing structural differences between Federal States, the latter explain almost entirely the lower export performance of Eastern Germany. Thus, especially the smaller firm sizes and the lower shares of manufacturing industries in gross value added are identified as important explanatory factors of the comparatively weak export performance of the New German States.
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Germany’s Production of Export Goods: Human Capital Content Slightly Exceeds that of Imports
Hans-Ulrich Brautzsch, Udo Ludwig
Wirtschaft im Wandel,
No. 11,
2009
Abstract
In the decade before the present, world financial crisis exports out of Germany expanded enormously. This was caused by the growing world demand as well as the internationalization of the national production processes and favoured by the improving price competitiveness. At the same time, against the background of the tertiarisation of the economy, the qualification of employees has increased considerably. In our study, we investigate the changes of labour quality in the production of export goods using the standard open input-output model. Hereby, labour input is measured in terms of different formal qualification levels of the employees. The results are compared with the labour input for imported goods. We find out that the input of high qualified labour per unit of produced export goods exceeds only marginally the comparable input value of the imports. It should be mentioned that the comparison is strongly influenced by the assumption of identical production functions for both Germany and its trading partners.
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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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Out-migration and Regional Convergence
Alexander Kubis, Lutz Schneider
Wirtschaft im Wandel,
20 Jahre Deutsche Einheit - Teil 1 -
2009
Abstract
Since 1989, the migration deficit of East Germany has accumulated to 1.8 million people. Against this background, the contribution analyses the relationship between regional migration and regional growth. From a theoretical point of view, one might find reasons in favour and in opposition to a convergence supporting function of migration. If migrants are taken from the upper tail of the human capital distribution of a poor region, divergence is the probable outcome. If on the other hand people with low human capital endowment move to richer regions, migration might enhance regional convergence.
The empirical analysis how regional migration and convergence are interrelated is performed on the basis of German districts within a period from 1995 to 2006. The concept of ß-convergence is applied and a cross-section model controlling for spatial correlation between the error terms is estimated.
The results indicate convergence on the regional level; East German regions seem to catch up particularly fast. The effect of migration is twofold. Out-migration from poor region is correlated with strong growth in these regions. However, the corresponding migration towards richer region is accompanied with growth in these regions, too. Therefore, the impact of migration on convergence is uncertain. Nevertheless, the outcome is in favour of an aggregate benefit of migration if people move from poor to rich regions.
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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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Finanzielle Instabilität und Krise in den Post-Transformations-Ländern
Hubert Gabrisch
Wirtschaftspolitische Blätter,
No. 3,
2009
Abstract
Contagion was only the trigger of the unexpectedly severe crisis in European post-transition countries. Rather, increasing financial fragility of the countries since 2001, after their banking and financial sector was overtaken by international financial institutions, was the origin. Euphoric expectations induced an asset price inflation followed by an increasing debt burden of the private sector, which was fueled by net capital inflows. This study argues that simple concepts of demand reduction do not offer any way out of the crisis. A second transition is necessary, which establishes a new growth model being robust against speculative capital flows and offering high growth rates.
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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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