In diesem Beitrag wird die regionale Ausbreitung von COVID-19-Infektionen untersucht. Unter Verwendung der Hauptkomponentenanalyse, des LARS- und RLASSO-Auswahlverfahrens erfolgt eine Variablenreduktion. Geprüft wird die Bedeutung von Zustandsabhängigkeit, unbeobachteter Heterogenität und...

This paper analyses cyclical effects on job-to-job mobility using German data. The focus lies on the influence of the regional unemployment rate and the regional growth of the GDP. Job-to-job transitions are fragmented into external and internal movements. The innovation is to describe mobility...

This paper presents a survey on recent developments in estimation methods, instrumental variables approaches, panel data models, non- and semiparametric models for micro data. Additionally, some tests in these areas are considered. Special attention is paid to problems with weak instruments,...

This paper presents some selective aspects of standard econometric methods and of new developments in econometrics that are important for applications with microeconomic data. The range includes variance estimators, measurement of outliers, problems of partially identified parameters, nonlinear...