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DIW Discussion Papers 1447 / 2015
Germany experienced a unique rise in the level of self-employment in the first two decades following unification. Applying the non-linear Blinder-Oaxaca decomposition technique, we find that the main factors driving these changes in the overall level of self-employment are demographic developments, the shift towards service sector employment, and a larger share of population holding a tertiary degree. ...
2015| Michael Fritsch, Alexander S. Kritikos, Alina Sorgner
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DIW Discussion Papers 1446 / 2015
We estimate the impact of a differential treatment of paid employees versus self-employed workers in a public health insurance system on the entry rate into entrepreneurship. In Germany, the public health insurance system is mandatory for most paid employees, but not for the self-employed, who usually buy private health insurance. Private health insurance contributions are relatively low for the young ...
2015| Frank M. Fossen, Johannes König
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DIW Discussion Papers 1445 / 2015
This paper analyzes optimal grading in a world that focuses on top grades. Students choose an effort level, their performance is graded, and their grade correlates with their future income. Ex-ante, the policy maker chooses the optimal coarseness of the grading scale to maximize student welfare. When choosing their effort, students overweight outstanding { or salient { grades. I show that this behavior ...
2015| Lilo Wagner
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DIW Discussion Papers 1444 / 2015
This paper examines long-term price overreactions in various financial markets (commodities, US stock market and FOREX). First, t-tests are carried out for overreactions as a statistical phenomenon. Second, a trading robot approach is applied to test the profitability of two alternative strategies, one based on the classical overreaction anomaly, the other on a so-called “inertia anomaly”. Both weekly ...
2015| Guglielmo Maria Caporale, Luis Gil-Alana, Alex Plastun
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DIW Discussion Papers 1443 / 2015
Excessive alcohol consumption among young people is a major public health concern. On March 1, 2010, the German state of Baden-Württemberg banned the sale of alcoholic beverages between 10pm and 5am at off-premise outlets (e.g., gas stations, kiosks, supermarkets). We use rich monthly administrative data from a 70 percent random sample of all hospitalizations during the years 2007-2011 in Germany in ...
2015| Jan Marcus, Thomas Siedler
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DIW Discussion Papers 1442 / 2015
We analyze future scenarios of integrating electric vehicles (EV) into the German power system, drawing on different assumptions on the charging mode. We use a numerical dispatch model with a unit-commitment formulation which minimizes dispatch costs over a full year. While the overall energy demand of the EV fleets is rather low in all scenarios, the impact on the system’s load duration curve differs ...
2015| Wolf-Peter Schill, Clemens Gerbaulet
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DIW Discussion Papers 1441 / 2015
The financing of infrastructures is a major topic in recent energy policy debates. Project finance, as a specialized form of debt finance, thereby has become a well-established financing tool. This paper contributes a qualitative and quantitative analysis of the determinants of the debt ratio in project finance, using data on 26 liquefied natural gas (LNG) export and import projects. We argue that ...
2015| Sophia Rüster
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DIW Discussion Papers 1440 / 2014
A manufacturer contracting secretly with several downstream competitors faces an opportunism problem, preventing it from exerting its market power. In an infinitely repeated game, the opportunism problem can be relaxed. We show that the upstream firm's market power can be restored even further if the upstream firm chooses a mixed distribution system in which it makes use of an intermediary to distribute ...
2014| Isabel Teichmann, Vanessa von Schlippenbach
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DIW Discussion Papers 1439 / 2014
This paper experimentally investigates the nature of image concerns in gift giving. For this, we test variants of dictator and impunity games where the influences of social preferences on behavior are kept constant across all games. Givers maximize material payoffs by pretending to be fair when receivers do not know the actual surplus size, implying that portraying an outward appearance of norm compliance ...
2014| Alexander S. Kritikos, Jonathan H. W. Tan
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DIW Discussion Papers 1438 / 2014
In recent years, almost all children below school age in Western industrialized countries have some experience of attending day care institutions. However, the age at which children enter day care and therefore the overall time spent in day carevaries substantially. We investigate the potential impact of later day care entry on the social and emotional behaviour of children, one important aspect of ...
2014| Frauke H. Peter, Pia S. Schober, C. Katharina Spieß
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DIW Discussion Papers 1437 / 2014
Do WTO commitments reduce the risk of trade policy reversals? To address this question, we rely on the theoretical model of varying cooperative tariffs by Bagwell and Staiger (1990) to specify our empirical model for the probability of a tariff increase. We then study how WTO tariff commitments affect this probability. We estimate our model using a database of WTO bound tariffs that we built for all ...
2014| Valeria Groppo, Roberta Piermartini
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DIW Discussion Papers 1436 / 2014
This paper studies the bank-sovereign link in a dynamic stochastic general equilibrium set-up with strategic default on public debt. Heterogeneous banks give rise to an interbank market where government bonds are used as collateral. A default penalty arises from a breakdown of interbank intermediation that induces a credit crunch. Government borrowing under limited commitment is costly ex ante as bank ...
2014| Philipp Engler, Christoph Große Steffen
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DIW Discussion Papers 1435 / 2014
We analyze a constitutional change in the German State of Bavaria where citizens, not politicians, granted themselves more say in politics at the local level through a constitutional initiative at the state level. This institutional setting allows us to focus on revealed preferences for direct democracy and to identify factors which explain this preference. Empirical results suggests support for direct ...
2014| Felix Arnold, Ronny Freier, Magdalena Pallauf, David Stadelmann
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DIW Discussion Papers 1434 / 2014
Many developing countries around the world apply progressive water tariffs, often structured in the form of discretely increasing block tariffs (IBTs). These tariffs have been criticized in the welfare economic literature due to their perceived inefficiency: many of the prices charged under IBTs do not correspond to marginal costs and thus violate the principle of allocative efficiency. In this paper ...
2014| Georg Meran, Christian von Hirschhausen
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DIW Discussion Papers 1433 / 2014
It is often assumed that international labor migration from Tajikistan, while having no noticeable effects on investment (usually defined as medium and long-term consumption, such as education, or investment into housing or business), on average leads to an increase in short-term consumption, mostly food. In this paper, a simple household-level model determining the migration decision is developed ...
2014| Kristina Meier
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DIW Discussion Papers 1432 / 2014
It is difficult to test the prediction that future career prospects create implicit effort incentives because researchers cannot randomly “assign” career prospects to economic agents. To overcome this challenge, we use data from professional soccer, where employees of the same club face different external career opportunities depending on their nationality. We test whether the career prospect of being ...
2014| Jeanine Miklós-Thal, Hannes Ullrich
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DIW Discussion Papers 1431 / 2014
This paper studies the causal effects of graduating from university with an honors degree on subsequent earnings. While a rich body of literature has focused on estimating returns to human capital, few studies have analyzed returns at the very top of the education distribution. We highlight the importance of honors degrees for future labor market success in the context of German law graduates. Using ...
2014| Ronny Freier, Mathias Schumann, Thomas Siedler
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DIW Discussion Papers 1430 / 2014
We study how website defaults affect consumer behavior in the domain of charitable giving. In a field experiment that was conducted on a large platform for making charitable donations over the web, we exogenously vary the default options in two distinct choice dimensions. The first pertains to the primary donation decision, namely, how much to contribute to the charitable cause. The second relates ...
2014| Steffen Altmann, Armin Falk, Paul Heidhues, Rajshri Jayaraman
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DIW Discussion Papers 1429 / 2014
We advance the literature on political budget cycles by testing separately for cycles in expenditures for elections in the legislative and the executive. Using municipal data, we can separately identify these cycles and account for general year effects. For the executive branch, we show that it is important whether the incumbent re-runs. To account for the potential endogeneity associated with this ...
2014| Dirk Foremny, Ronny Freier, Marc-Daniel Moessinger, Mustafa Yeter
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DIW Discussion Papers 1428 / 2014
This study evaluates the impact of fuel prices on new car purchases, using exhaustive individual-level data of monthly registration of new private cars in France from 2003 to 2007. Detailed information on the car holder enables us to account for heterogeneous preferences across purchasers. We identify demand parameters through the large oil price fluctuations of this period. We find that the sensitivity ...
2014| Pauline Givord, Céline Grislain-Letrémy, Helene Naegele