This study analyzes the effects of binding speed limits on crash frequency on German motorways. Various geo-spatial data sources are merged to a new data set providing rich information on roadway characteristics for 500-meter segments of large parts of the German motorway network. The empirical...

Using data from the National Educational Panel Study of 2009/2010, this paper investigates the relationship between regional training supply and employees’ training participation. Controlling for other regional factors such as the local unemployment rate, the educational level, the population...

Obesity may not only be linked to undesirable health outcomes but also to limitations in sexual life. The present paper aims to assess whether there is a causal relationship between weight loss and sexual activity in adult obese individuals. To address the endogeneity of weight loss that is...

This paper examines the long-run relationship between energy consumption and real GDP, including energy prices, for 25 OECD countries from 1981 to 2007. The distinction between common factors and idiosyncratic components using principal component analysis allows to distinguish between...

Although the link between oil prices and dollar exchange rates has been frequently analyzed, a clear distinction between prices and nominal exchange rate dynamics and a clarification of the issue of causality has not been provided. In addition, previous studies have mostly neglected...

Citizenship is the most important right a host country can bestow on its immigrant population. Yet, little is known which citizenship policies work and who actually benefits from them. To answer these questions, we estimate the marginal returns to citizenship on children’s school performance...