This paper evaluates the eff ectiveness of the introduction of a Writing Center at a university. The center has the purpose to provide subject-specifi c courses that aim to improve students‘ abilities of scientifi c writing. In order to deal with presumed selfperceptional biases of students in...

Since their first implementation in 2000, the PISA studies have attracted public attention and spurred the demand for institutional changes in schooling systems. The introduction of standardized student tests and of incentives for schools and teachers are notable examples of such institutional...

The classical Heckman (1976, 1979) selection correction estimator (heckit) is misspecified and inconsistent if an interaction of the outcome variable and an explanatory variable matters for selection. To address this specification problem, a full information maximum likelihood estimator and a...

Sample selection models, variants of which are the Heckman and Heckit models, are increasingly used by political scientists to accommodate data in which censoring of the dependent variable raises concerns of sample selectivity bias. Beyond demonstrating several pitfalls in the calculation of...

This paper examines the relative savings position of migrant households in West Germany, paying particular attention to differences between temporary and permanent migrants.Our findings reveal significant differences in the savings rates between foreign-born and German-born individuals. These...

In this paper, a decomposition method for Tobit-models is derived, which allows the differences in a censored outcome variable between two groups to be decomposed into a part that is explained by differences in observed characteristics and a part attributable to differences in the estimated...

This paper examines the patterns of educational assortative mating in East and West Germany. In the literature it is well known that individuals do not mate randomly with respect to social and cultural traits, and that highly assortative mating can lead to polarization and exacerbate economic...

This study analyzes the educational attainment and early labor market outcomes of young migrants from the Former Soviet Union (FSU) who arrived in Germany between 1989 and 1994. The results reveal that migrants have lower educational attainments than natives, and that within the group of...

The results of the PISA 2000 study renewed the interest in the contribution of human capital to economic growth. So far the exploration of large country comparisons delivered rather mixed results. Concentrating on those OECD member countries which participated in PISA 2000, this paper uses panel...

There is a large literature on the influence of institutional characteristics on student academic achievement. In contrast, relatively little research focuses on student time allocation and its effects on student performance. This paper contributes to the literature by investigating the effect...