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Vierteljahrshefte zur Wirtschaftsforschung 1 / 2003
Die ungelernten und die älteren Arbeitnehmer sind die eigentlichen Problemgruppen auf dem deutschen Arbeitsmarkt. Zur Bewältigung der Beschäftigungskrise erscheint die Etablierung eines Niedriglohnsektors zwingend geboten. Die Umsetzung dieser Forderung ist jedoch schwierig, da sich nicht viele geeignete Maßnahmen dafür anbieten. Zwar ist das Steuer- und Transfersystem im Niedriglohnbereich leistungsfeindlich, ...
2003| Klaus F. Zimmermann
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Vierteljahrshefte zur Wirtschaftsforschung 3 / 2002
Die Schaffung der Europäischen Währungsunion hatte in wissenschaftlichen Kreisen heftigste Kontroversen ausgelöst. Der vorliegende Beitrag unternimmt, dreieinhalb Jahre nach dem Beginn der Währungsunion, eine Bestandsaufnahme der Entwicklungen in den diesbezüglich zugrunde liegenden zentralen Problembereichen: den Arbeitsmärkten, der Inflationsentwicklung und der Budgetproblematik. Eine Analyse der ...
2002| Jochen Michaelis, Michael Pflüger
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Vierteljahrshefte zur Wirtschaftsforschung 3 / 2002
2002| Michael Pflüger, Ulrich Fritsche
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DIW Discussion Papers 2163 / 2026
Several recent studies consider a set of proxies to identify different monetary policy shocks for different regions in the world. We show that the way the proxies are used to identify the monetary policy shocks may lead to correlated shocks and dubious structural analysis and we demonstrate how to overcome the problem of correlated shocks. We illustrate that, if correlated shocks are used in applied ...
2026| Martin Bruns, Helmut Lütkepohl, James McNeil
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DIW Discussion Papers 2155 / 2026
In structural vector autoregressive analysis it has become quite popular to identify some structural shocks of interest by external instruments or proxies. This study points out a range of areas where such proxies have been used and sketches the way the proxies have been constructed. It reviews identification and estimation methods that have been considered in this context. Moreover, it points out ...
2026| Martin Bruns, Helmut Lütkepohl
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DIW Discussion Papers 2146 / 2025
We replicate a study by Känzig (American Economic Review, 111 (2021), 1092-1125), who employs structural vector autoregressive techniques to examine the impact of changes in oil supply expectations on the price of oil and other macroeconomic aggregates. Känzig identifies an oil supply news shock by constructing a proxy from OPEC announcements about their production plans. As this proxy is a controversial ...
2025| Helmut Lütkepohl, Till Strohsal
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DIW Discussion Papers 2110 / 2025
This paper analyzes possibly time-varying shock transmission in structural vector autoregressive (VAR) models when the reduced-form VAR coefficients are time-invariant and the shocks are identified through non-Gaussianity. To check for possible time-variation in the impulse responses, we propose Wald tests for two situations: (1) homoskedastic and (2) heteroskedastic structural shocks. For the latter ...
2025| Helmut Lütkepohl, Till Strohsal
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DIW Discussion Papers 2108 / 2025
In conventional proxy VAR analysis, the shocks of interest are identified by external instruments. This is typically accomplished by considering the covariance of the instruments and the reduced-form residuals. Alternatively, the instruments may be internalized by augmenting the VAR process by the instruments or proxies. These alternative identification methods are compared and it is shown that the ...
2025| Martin Bruns, Helmut Lütkepohl
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DIW Discussion Papers 2079 / 2024
We examine how the gender of business-owners is related to the wages paid to female relative to male employees working in their firms. Using Finnish register data and employing firm fixed effects, we find that the gender pay gap is – starting from a gender pay gap of 11 to 12 percent - two to three percentage-points lower for hourly wages in female-owned firms than in maleowned firms. Results are robust ...
2024| Alexander S. Kritikos, Mika Maliranta, Veera Nippala, Satu Nurmi
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DIW Discussion Papers 2064 / 2023
Financing entrepreneurship spurs innovation and economic growth. Digital financial platforms that crowdfund equity for entrepreneurs have emerged globally, yet they remain poorly understood. We model equity crowdfunding in terms of the relationship between the number of investors and the amount of money raised per pitch. We examine heterogeneity in the average amount raised per pitch that is associated ...
2023| Saul Estrin, Susanna Khavul, Alexander S. Kritikos, Jonas Löher