Hatzichristou, C. (2016). Strengthen resilience and positive climate in school community: Basic protective factors for coping with violent and aggressive behavior. Invited address at 1st Panhellenic Conference “School violence and Bullying”, organized by the Regional Directorate of Primary and Secondary Education of Central Macedonia - Watch Prevention of School Violence and Bullying, April 8-10, Thessaloniki.
Hatzichristou, C. (2013). Promoting positive school climate and resiliencein the school community. Invited keynote address at the One- Day Conference on “The role of school in psychosocial development and adjustment of preschool children”, Sivitanidios School, March 29, Athens.