[4] In 1969, he earned a PhD from Umeå University in Sweden, with a dissertation on aggressive behaviour among young boys.
[2] Olweus defined bullying as unwanted aggressive behaviour that is repeated over time and involves an imbalance of power or strength.
[2] One study, conducted by Olweus and Sue Limber of Clemson University in South Carolina, evaluated the effectiveness of the program in U.S. schools, including nearly 70,000 students, over the course of three years.
[11] In addition to Norway and the U.S., the OBPP has been implemented in Iceland, Sweden, and Lithuania, and is being piloted in Mexico, Brazil, and Germany.
[1] In 2003, Olweus was given the Award for Distinguished Contributions to Public Policy for Children by the Society for Research in Child Development.