This WSI Study gives an overview of the position of solo self-employed in Germany and the Netherlands by examining - in their institutional context - labour market characteristics and social security provisions. The Study has been prepared within the project 'Self-employed without personnel:...

In this paper we examine, by means of a citation analysis, whichfactors influence the impact of articles published indemography journals between 1990 and 1992. Several quantifiablecharacteristics of the articles (characteristics withrespect to authors, visibility, content and journals) are...

What drives stated preferences about the number of foreigners? Is it self-interest as stressed by the political economy of immigration? Does social interaction affect this preference or is the immigration preference completely in line with the preference for the aggregate population size? In...

Which signals are important in gaining attention in science? For a group of 1,371 scientific articles published in 17 demography journals in the years 1990-1992 we track their influence and discern which signals are important in receiving citations. Three types of signals are examined: the...