Ruben is a postdoctoral researcher in social science quantitative methods. He joined the Professorship for Statistics and Methodology in 2018 after spending three years in the Institute for Employment Research’s (IAB) Graduate Program where he wrote his dissertation on respondent conditioning. He completed his PhD (Dr. rer. soc.) at the University of Mannheim in 2018 and holds an M.Sc. in Socio-Economics from the University of Erlangen-Nuremberg and a B.A. in Social Sciences from the University of Dusseldorf.