Der Vorschlag von Friedrich Merz, Aktieneigentum steuerlich zu fördern, ist ein Beispiel für eine gut gemeinte Idee. Es ist erfreulich, dass mittlerweile fast alle politischen Parteien erkannt haben, wie groß das Problem der fehlenden Altersvorsorge in Deutschland ist. Nach einer Studie des DIW Berlin muss mehr als die Hälfte derer, die in den kommenden Jahren ...
Understanding whether laws shape or simply reflect citizens' attitudes is important but empirically difficult. We provide new evidence on this question by studying the relationship between legal same-sex relationship recognition policies (SSRRPs) and attitudes toward sexual minorities in Europe. Using data from the European Social Surveys covering 2002-2016 and exploiting variation in the timing of ...
This study estimates mean and distributional effects of early between-school ability tracking on student achievement. For identification, I exploit heterogeneity in tracking regimes between German federal states. After comprehensive primary school, about 40% of students are selected for the academic track and taught in separate schools in all states. The remaining students, however, are either taught ...
Are there economies of scale to data in internet search? This paper is first to use real search engine query logs to empirically investigate how data drives the quality of internet search results. We find evidence that the quality of search results improve with more data on previous searches. Moreover, our results indicate that the type of data matters as well: personalized information is particularly ...
Unlike most retrospective merger studies that only focus on price effects, we also estimate the impact of a merger on product variety. We use an original dataset on Dutch supermarkets to assess the effect of a merger that was conditionally approved by the Dutch Competition Authority (ACM) on prices and the depth of assortment. We find that the merger did not affect prices but it led the merging parties ...
Die Forschung in den Sozial- und Wirtschaftswissenschaften ist immer öfter auf einen abgesicherten Zugang zu Forschungsdaten angewiesen, da ansonsten die Anforderungen des Datenschutzes nicht erfüllt werden können. Remote-Access-Lösungen bieten hier einen komfortablen Datenzugang und ermöglichen gleichzeitig einen hohen Sicherheitsstandard. Der Text klärt kurz Begrifflichkeiten und Rahmenbedingungen ...
A rich literature links knowledge inputs with innovative outputs. However, most of what is known is restricted to manufacturing. This paper analyzes whether the three aspects involving innovative activity - R&D; innovative output; and productivity - hold for knowledge intensive services. Combining the models of Crepon et al. (1998) and of Ackerberg et al. (2015), allows for causal interpretation of ...
Tendenz zum überproportionalen Investieren in Staatsanleihen des Heimatlandes – Absicherung durch Eigenkapital würde vor allem spanische und italienische Banken treffen und die Staatsschuldenfinanzierung erschweren Europäische Großbanken haben in den vergangenen Jahren verstärkt in heimische Staatsanleihen investiert. Insbesondere bei den italienischen und spanischen ...
