Guido Friebel is Professor of Human Resources at Goethe University in Frankfurt. His main research field is organizational and personnel economics. He carries out randomized controlled trials (RCTs) with and within firms, with a view to increase both productivity and worker welfare and to test important theories. He also analyzes observational career and promotion data and write models about careers, communication and talent management. The other main research interest is how institutions shape the accumulation and allocation of human capital, focusing on problems of families, gender, and migration. He is a fellow at CEPR and IZA, a Scientific Director of CLBO, a project leader at the Rockwool Foundation in Berlin and an Associate at ZEW, Mannheim. Before joining Goethe, he graduated with a Ph.D. from ULB in Brussels and held positions at the Toulouse School of Economics and at SITE, Stockholm School of Economics.