Die Sächsische Längsschnittstudie begleitet seit 1987 kontinuierlich eine Stichprobe junger Ostdeutscher des Geburtsjahrgangs 1973 auf ihrem Weg vom DDR- zum Bundesbürger. Mit mittlerweile 22 abgeschlossenen Erhebungswellen (2008) zählt die weiterhin laufende Studie zu den weltweit am...

The main aim of the present paper is to historically reappraise the development of the German Socio-Economic Panel Study (SOEP) in the 1990s after the first six waves had been collected. This development was closely connected to the opening of the Iron Curtain in Eastern Europe and the fall of...

In recent years a number of panel estimators have been suggested for sample selection models, where both the selection equation and the equation of interest contain individual effects which are correlated with the explanatory variables. We review and compare some of these estimators, and apply...