Terrorist models often focus on one kind of agent as well as one motive to pursue terrorism. Our model diverges from such standard approaches by taking account of the reasoning of the terrorist-organization leader as well as the reasoning of the individual terrorist. This allows us to observe...

A new point estimator for the AR(1) coefficient in the linear regression model with arbitrary exogenous regressors and stationary AR(1) disturbances is developed. Its construction parallels that of the median‐unbiased estimator, but uses the mode as a measure of central tendency. The...

Identifying the impact of local firm concentration on individual firm performance is likely to produce a selection bias related to the positive effects of local concentration if agglomeration economies and natural advantages coincide. We overcome this problem by exploiting exogenous variation...

In January 2005, the German Supreme Court permitted the state governments to charge tuition fees. By exploiting the natural experiment, we examine how government ideology influenced tuition fee policy. The results show that right-wing governments were active in introducing tuition fees. By...

Geringqualifizierte haben in Deutschland ein weitaus höheres Risiko arbeitslos zu werden als Fachkräfte. Kann ein subventionierter Niedriglohnsektor - wie er derzeit im Bündnis für Arbeit diskutiert wird - zur Lösung ihres Arbeitsplatzproblems beitragen? In welchem Umfang werden...

In this paper we give an overview, with special emphasis on Germany, of the recent development of the market for venture capital. We analyse the financial contracting problems that arise when entrepreneurs need capital from outside investors, and demonstrate how these problems are addressed by...

We use the PISA student-level achievement database to estimate international education production functions. Student characteristics, family backgrounds, home inputs, resources, teachers and institutions are all significantly associated with math, science and reading achievement. Our models...

Am 28. Oktober 2011 wurde in Berlin der 8. Familienbericht an die Bundesministerin für Familie, Senioren, Frauen und Jugend übergeben. Er beschäftigt sich mit dem Thema »Zeit für Familie« und mit den Notwendigkeiten und Möglichkeiten einer Familienzeitpolitik. Für die Erstellung des...

We use estimates of the effect of educational achievement-measured by international student achievement tests-on economic growth to simulate the impact of improved achievement for individual EU countries and the EU as a whole. We calculate the present value of improvements in GDP over the life...

This paper documents a robust empirical regularity: in the long-run, higher trade openness is associated with a lower structural rate of unemployment. We establish this fact using: (i) panel data from 20 OECD countries, (ii) cross-sectional data on a larger set of countries. The time structure...