Utviklingspsykologi (Developmental psychology)
Psykososiale vansker blant barn og unge (Psychosocial difficulties among children and youth)
Sosial kompetanse (Social Competence)
Evaluering av intervensjoner og forebyggende tiltak (Intervention and prevention research
Råd og utvalg
Barne-, ungdoms- og familiedirektoratets ekspertgruppe for utvikling av faglige anbefalinger om «Trygghet og sikkerhet i barneverninstitusjoner» (2015–2016).
Hilsen, M., Kallander, E., Ruud, T., & Hagen, K. A. (2016). Health related quality of life in a Norwegian sample of children and adolescents living in families with parental physical or mental illness or substance abuse. Manuscript under review.
Hagen, K. A., & Ogden, T. (2016). Predictors of changes in child behavior following parent management training: Child, Context, and Therapy Factors. International Journal of Psychology, doi: 10.1002/ijop.12365. [E-pub ahead of print].
Gere, M. K., Hagen, K. A., Villabø, M. A., Arnberg, K., Neumer, S-P., & Torgersen, S. (2013). Father's mental health as a protective factor in the relationship between maternal and child depressive symptoms. Depression and Anxiety, 30, 31–38.
Ogden, T., & Hagen, K. A. (2012). System-oriented Interventions in Europe. I: Persisters and desisters in crime from adolescence into adulthood: explanation, prevention and punishment. Ashgate 2012. ISBN 978-1-4094-3192-3. s. 413–429.
Hagen, K. A., Ogden, T., & Bjørnebekk, G. (2011). Treatment Outcomes and Mediators of Parent Management Training: A One-Year Follow-Up of Children with Conduct Problems. Journal of clinical child and adolescent psychology, 40, 165–178.
Ogden, T., Hagen, K. A., Askeland, E., Christensen, B. (2010). Implementing and Evaluating Evidence-Based Treatments of Conduct Problems in Children and Youth in Norway. Intervention: International Journal of Mental Health, Psychosocial Work and Counselling in Areas of Armed Conflict, 8, 207–222.
Ogden, T., Hagen, K. A., Askeland, E., & Christensen, B. (2009). Implementing and evaluating evidence-based treatments of conduct problems in children and youth in Norway. Research on social work practice, 19, 582–591.
Ogden, T., & Hagen, K. A. (2008). Treatment effectiveness of Parent Management Training in Norway: A randomized controlled trial of children with conduct problems. Journal of Consulting and Clinical Psychology, 76, 607–621.
Ogden, T., Hagen, K. A., Andersen, O. (2007). Sustainability of effectiveness of a programme of multisystemic treatment (MST) across participant groups in the second year of operation. Journal of Children's Services, 2, 4–14.
Ogden, T., Sørlie, M-A., & Hagen, K. A. (2007). Building strength through enhancing social competence in immigrant students in primary school. A pilot study. Emotional and Behavioural Difficulties, 12, 105–117.
Hagen, K. A., & Ogden, T. (2006). Evaluering av multisystemisk behandling i Norge. Tidsskriftet Norges Barnevern, 83, 3–12.
Ogden, T., & Hagen, K. A. (2006). Multisystemic Treatment of Serious Behaviour Problems in Youth: Sustainability of Effectiveness Two Years after Intake. Child and Adolescent Mental Health, 11, 142–149.
Hagen, K. A. (2004). Stress, emotion regulation, and social competence in high-risk children: Testing moderator and mediator models via structural equation modeling. Virginia Commonwealth University: Dissertation Abstracts International: Section B: The Sciences and Engineering, 65(4-B), 114 s.