The seminar will take place on June 1st at Universitat Pompeu Fabra. It is free of charge and no prior registration is necessary. Three experts will discuss the pros and cons of probabilistic and non-probabilistic sampling designs: Dr. Matthias Ganninger (GESIS-Leibniz Institute for the Social Sciences, Mannheim, Germany), Prof. Dr. Jaak Billiet (Catholic University of Leuven, Belgium) and Mr. José Luis Melero (TNSGlobal - Spain). For complete information, click here.