Professor Dr. Bettina Langfeldt is Professor of Methods in Empirical Social Science in the Faculty of Social Sciences at the University of Kassel and a member of the executive board of INCHER. Among other things, she heads the  Q-DUAL "Qualitätssicherung und -entwicklung im dualen Studium" (Quality assurance and development in dual studies), a project in the BMBF funding line "Quality development in science" that is carried out at INCHER. Further members of the Q-DUAL research team are Sören Magerkort (INCHER) and Lisa Marie Brauner.