Ann-Zofie Duvander is Professor of Sociology at Mid University and Professor of Demography at Stockholm University. Her research interests include family policy and her main research is on parental leave use in Sweden. She has studied parental leave use for various groups of parents and changes over time. She has been involved in reform evaluations, notably the effects of the introduction of the daddy months in Sweden and in the other Nordic countries. She has also studied income trajectories in couples following childbirth. Recently she has been involved in research on economic responsibility over children after a separation.