Peter K. Smith is Emeritus Professor of Psychology at the Unit for Schooland Family Studies at Goldsmiths College, University of London, UK. His research interests are in social development, school bullying, play, and grandparenting. Previous publications include Children and Play (2010), Understanding Children's Development (2011) and Bullying in Schools: How Successful can Interventions be? (2004).

• Introduction Peter K. Smith 1. Listening to children’s voices: moral emotional attributions in relation to primary school bullying Dawn Jennifer and Helen Cowie 2. Profiling social, emotional and behavioural difficulties of children involved in direct and indirect bullying behaviours H. Smith, K. Polenik, S. Nakasita and A.P. Jones 3. Associations between types of involvement in bullying, friendships and mental health status Grace Skrzypiec, Phillip T. Slee, Helen Askell-Williams and Michael J. Lawson 4. Peer groups and victimisation among native and immigrant adolescents in Norway Hildegunn Fandrem, Dagmar Strohmeier and Kolbrun Asta Jonsdottir 5. Emotional problems and victimisation among youth with national and international migration experience living in Austria and Turkey Dagmar Strohmeier and Aysun Dogan 6. From cyberbullying to electronic aggression: typology of the phenomenon Jacek Pyżalski 7. The perception of cyberbullying in adolescent victims Anna Ševčíková, David Šmahel and Mlada Otavová 8. Emotional and behavioural problems in the context of cyberbullying: a longitudinal study among German adolescents Anja Schultze-Krumbholz, Anne Jäkel, Martin Schultze and Herbert Scheithauer 9. Moral disengagement and emotional and social difficulties in bullying and cyberbullying: differences by participant role Sebastian Wachs 10. Cyberbullying victimisation in adolescence: relationships with loneliness and depressive mood Dorit Olenik-Shemesh, Tali Heiman and Sigal Eden 11. Predictors of victimisation across direct bullying, indirect bullying and cyberbullying Antonella Brighi, Annalisa Guarini, Giannino Melotti, Silvia Galli and Maria Luisa Genta 12. Victims’ perceptions of traditional and cyberbullying, and the psychosocial correlates of their victimisation Marilyn Campbell, Barbara Spears, Phillip Slee, Des Butler and Sally Kift 13. Peer victimisation and depressive symptoms: can specific coping strategies buffer the negative impact of cybervictimisation? Katja Machmutow, Sonja Perren, Fabio Sticca and Françoise D. Alsaker 14. Does the association with psychosomatic health problems differ between cyberbullying and traditional bullying? Linda Beckman, Curt Hagquist and Lisa Hellström 15. Problem behaviours, traditional bullying and cyberbullying among adolescents: longitudinal analyses Leanne Lester, Donna Cross and Thérèse Shaw