Oskar Jenni co-directs the Child Development Center at the University Children's Hospital Zurich since 2005; he is Associate Professor for Developmental Paediatrics at the University of Zurich. His research interests include children’s sleep behavior and the motor, cognitive and social development of healthy and sick children. He is Principal Investigator of the Zurich Longitudinal Studies, some of the largest long-term studies on the development of children from birth to adulthood. In 2021 his book «Die kindliche Entwicklung verstehen» was published by the Springer Verlag.