1 IY kindergartens The Incredible Years teacher classroom management programme in kindergartens: effects of a universal preventive effort. Sturla Fossum 1 , Bjørn Helge Handegård 1 & May Britt Drugli 2,3 1 The Regional Centre for Child and Youth Mental Health and Child Welfare - North. UiT, the Arctic University of Norway, Tromsø, Norway. 2 The Regional Centre for Child and Youth Mental Health and Child Welfare – Central Norway, Norwegian University of Science and Technology (NTNU), Trondheim, Norway. 3 Centre for the Study of Educational Practice (SePu), Hedmark University College, Elverum, Norway. Corresponding author: S Fossum RKBU Faculty of health sciences UiT the artic university of Norway 9037 Tromsø, Norway Phone –47 77 64 58 61, Fax –47 77 64 58 60 sturla.fossum@uit.no Running head: IY in kindergartens