Earnings expectations of "first-in-family" university students and their role for major choice / Katharina Adler (University of Würzburg), Fabian Kosse (University of Würzburg, CESifo and IZA), Markus Nagler (University of Erlangen-Nuremberg, CESifo, IZA and LASER), Johannes Rincke (University of Erlangen-Nuremberg and CESifo) ; IZA Institute of Labor Economics