Her research examines the risk and protective factors associated with bullying and victimization in family, peer, individual, school and social relationships. She also works on aggression in females in romantic relationships, dating violence and young girls with behaviour problems. She recently won an Investigator Award from the Canadian Institute of Health Research. She has published widely in the areas of bullying and victimization, peer processes, sexual harassment and aggression in girls and edited and coauthored books as well as numerous book chapters and articles, including a Report for the World Health Organization.