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DIW Discussion Papers 1642 / 2017
There is evidence that estimates of long-run impulse responses of structural vector autoregressive (VAR) models based on long-run identifying restrictions may not be very accurate. This finding suggests that using short-run identifying restrictions may be preferable. We compare structural VAR impulse response estimates based on long-run and short-run identifying restrictions and find that long-run ...
2017| Helmut Lütkepohl, Anna Staszewska-Bystrova, Peter Winker
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DIW Discussion Papers 1640 / 2017
Replication studies are considered a hallmark of good scientific practice. Yet they are treated among researchers as an ideal to be professed but not practiced. To provide incentives and favorable boundary conditions for replication practice, the main stakeholders need to be aware of what drives replication. Here we investigate how often replication studies are published in empirical economics and ...
2017| Frank Mueller-Langer, Benedikt Fecher, Dietmar Harhoff, Gert G. Wagner
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DIW Discussion Papers 1632 / 2016
Identification through heteroskedasticity in heteroskedastic simultaneous equations models (HSEMs) is considered. The possibility that heteroskedasticity identifies the structural parameters only partially is explicitly allowed for. The asymptoticproperties of the identified parameters are derived. Moreover, tests for identification through heteroskedasticity are developed and their asymptotic distributions ...
2016| Helmut Lütkepohl, George Milunivich, Minxian Yang
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DIW Discussion Papers 1597 / 2016
Die Debatte um Arbeitszeiten und deren Regulierung wird in der deutschen Öffentlichkeiterneut geführt. Empirische Grundlage sind dabei häufig Studien auf Basis des Mikrozensusoder des Sozio-oekonomischen Panels (SOEP), die teilweise erhebliche Unterschiede in ihrenErgebnissen aufweisen (Rengers 2015, Holst/Wieber 2014). In dem vorliegenden Beitragwird den Ursachen für diese Unterschiede nachgegangen. ...
2016| Elke Holst, Julia Bringmann
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DIW Discussion Papers 1593 / 2016
We use a lab-in-the-field experiment to investigate intra-couple labor supply decisions and the division of housework under individual and joint income taxation systems. In order to eliminate problems of endogenous intra-couple time use decisions, we exogenously varied not only the taxation system but also the intra-couple roles of primary and secondary earners. Using work effort as a proxy for labor ...
2016| Melanie Schröder, Norma Burow
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DIW Discussion Papers 1572 / 2016
We live in a time of increasing publication rates and specialization of scientific disciplines. More and more, the research community is facing the challenge of assuring the quality of research and maintaining trust in the scientific enterprise. Replication studies are necessary to detect erroneous research. Thus, the replicability of research is considered a hallmark of good scientific practice and ...
2016| Benedikt Fecher, Mathis Fräßdorf, Gert G. Wagner
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DIW Discussion Papers 1564 / 2016
This paper proposes a new non-parametric method of constructing joint confidence bands for impulse response functions of vector autoregressive models. The estimation uncertainty is captured by means of bootstrapping and the highest density region (HDR) approach is used to construct the bands. A Monte Carlo comparison of the HDR bands with existing alternatives shows that the former are competitive ...
2016| Helmut Lütkepohl, Anna Staszewska-Bystrova, Peter Winker
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DIW Discussion Papers 1546 / 2016
We analyze the link between R&D, innovation, and productivity in MSMEs with a special focus on micro firms with fewer than 10 employees; usually constituting the majority of firms in industrialized economies. Using the German KfW SME panel, we examine to what extent micro firms are different from other firms in terms of innovativeness. We find that while firms engage in innovative activities with smaller ...
2016| Julian Baumann, Alexander S. Kritikos
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DIW Discussion Papers 1533 / 2015
Open access means that research outputs, such as articles and data, are free of restrictions on access and free of restrictions on use. In the light of recent market developments in academic publishing, we argue in this essay that the discourse about open access must include a discussion about research infrastructure and innovation in academic publishing.
2015| Benedikt Fecher, Gert G. Wagner
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DIW Discussion Papers 1518 / 2015
This study examines foreign exchange intervention based on novel daily data covering 33 countries from 1995 to 2011. We find that intervention is widely used and an effective policy tool, with a success rate in excess of 80 percent under some criteria. The policy works well in terms of smoothing the path of exchange rates, and in stabilizing the exchange rate in countries with narrow band regimes. ...
2015| Marcel Fratzscher, Oliver Goede, Lukas Menkhoff, Lucio Sarno, Tobias Stöhr