Ethnic groups tend to agglomerate and assemble, mostly in urban areas. While ethnic clustering is critically debated in societies and the consequences for economic outcomes are under debate in research, the process is not yet well understood. A separate literature has also examined the cultural...

Trust in the citizens of a potential partner country may affect the decision to trade with or to migrate to a foreign country. This paper employs panel data to examine the causal impact of such bilateral trust on international trade and migration patterns. We apply instrumental variables (IV)...

This paper looks at the e ffect of cultural barriers on the skill selection of international migration. The data covers bilateral migration stocks by skill level in 2000 from about 99 sending countries to the main 15 destination countries. We use genetic distance as a proxy for cultural distance...

Using an epidemiological approach, we study the cultural influence on fertility outcomes of first- and second-generation female immigrants based on a 1% sample of the German population. We proxy for culture in the country of origin using total fertility rates from the year of migration, survey...

We present theory on international migration of dual-earner couples, and test it using Danish register data. Our model predicts that the probability that a couple emigrates is increasing in the earnings of the primary earner. The effect of the earnings of the secondary earner may go either way....

Since the 9/11 attacks more attention has been given to the question why the United States is a major target for transnational terrorism. What conditions motivate these terrorist activities? Are there specific characteristics in the terrorists home countries that provide a breeding ground for...

Earlier work established the notion that international terrorism harms international trade. This evidence was based on annual data with responses in the same year as attacks and incidents and on empirical models which ignored general equilibrium effects. We provide evidence that, if at all,...

What is the strategic role of membership in an intergovernmental group with unanimity requirements if the group negotiates with an external player in a setting with incomplete information? Being in such a group has a strategic effect compared to negotiating as a standalone player and reduces the...

Using a repeated cross-section of more than 258,000 residents of 39 European countries covering the period from 1990 to 2012, I study the impact of knowing different foreign languages on income and (for the first time) on unemployment. To help identify causal effects, I also employ a novel...

Economic debate about the consequences of immigration in Germany has largely focused on the wage effects for natives at an aggregate level. Especially the role of imperfect substitutability of migrants and natives gained importance. A new micro oriented approach is to focus on the firm level by...