Håkon Leiulfsrud, Ph.D. (1991), Norwegian University of Science and Technology (NTNU), is Professor in sociology at that university. He has published widely with a special interest in social inequality, class and social stratification, labour market and welfare state issues, and teaches sociological theory, social inequality and the welfare state, and research methods.
Peter Sohlberg, Ph.D. (1997), Norwegian University of Science and Technology (NTNU), is Professor in philosophy of social science at that university. He has published in a wide spectrum, covering philosophy of science, sociology and social psychology, and teaches social theory and philosophy of social science since the early 1990s.