2026

• Fagerbakk, Steffen André; Brattland, Heidi; Laugen, Nina Jakhelln; Holgersen, Katrine Høyer; Vogel, Patrick A.; Ryum, Truls. (2026) Developing facilitative interpersonal skills: A randomized controlled study of an apprenticeship training for first-year clinical psychology students. Psychotherapy Research
  Vitenskapelig artikkel

2025

• Holgersen, Katrine Høyer; Hasselberg, Nina; Siqveland, Johan; Ruud, Torleif. (2025) Effect of crisis resolution team treatment on crisis experience and crisis coping: a multicenter pre-post study in Norway. BMC Psychiatry
  Vitenskapelig artikkel
• Kvestad, Camilla Angelsen; Reitan, Solveig Klæbo; Holte, Ingvild Rønneberg; Follestad, Turid; Holgersen, Katrine Høyer. (2025) Prevalence and relevance of neurocognitive challenges in patients admitted to a secondary mental health outpatient clinic. Nordic Journal of Psychiatry
  Vitenskapelig artikkel
• Grøtte, Torun; Laugen, Nina Jakhelln; Brattland, Heidi; Skjervold, Anne Elisabeth; Iversen, Valentina Maria Do Rosario Cab; Holgersen, Katrine Høyer. (2025) Combined individual and group-based stabilization and skill-training intervention: A thematic analysis of patients’ experiences. European Journal of Trauma & Dissociation
  Vitenskapelig artikkel
• Holgersen, Katrine Høyer; Laugen, Nina Jakhelln; Grøtte, Torun; Brattland, Heidi; Vogel, Patrick A.; Selnes, Marit; Ryum, Truls. (2025) “It’s incredibly fun”: Psychotherapists’ perspectives on participating in a pilot study of an apprenticeship model for training psychology students. Clinical Supervisor
  Vitenskapelig artikkel

2024

• Kvestad, Camilla Angelsen; Holte, Ingvild Rønneberg; Reitan, Solveig Klæbo; Chiappa, Charlotte S.; Helle, Gunn Karin Vik; Skjervold, Anne Elisabeth; Rosenlund, Anne Marit; Watne, Øyvind; Brattland, Heidi; Helle, Jon. (2024) Measuring the Effect of the Early assessment Team (MEET) for patients referred to outpatient mental health care: a study protocol for a randomised controlled trial. Trials
  Vitenskapelig artikkel
• Laugen, Nina Jakhelln; Grøtte, Torun; Ryum, Truls; Vogel, Patrick A.; Brattland, Heidi; Holgersen, Katrine Høyer. (2024) Something has sort of opened up for me: psychology students’ reflections after participating in an apprenticeship training model. Research in Psychotherapy: Psychopathology, Process and Outcome
  Vitenskapelig artikkel
• Ruud, Torleif; Hasselberg, Nina Eide; Siqveland, Johan; Holgersen, Katrine Høyer. (2024) Patient-reported outcome, clinician-reported outcome, and patient satisfaction with treatment by crisis resolution teams: a multicenter pre-post study of outcome and associated factors in Norway. BMC Psychiatry
  Vitenskapelig artikkel

2022

• Ruud, Torleif; Holgersen, Katrine Høyer; Hasselberg, Nina; Siqveland, Johan. (2022) Accessibility and interventions of crisis resolution teams: a multicenter study of team practices and team differences in Norway. BMC Psychiatry
  Vitenskapelig artikkel
• Hasselberg, Nina; Klevan, Trude Gøril; Weimand, Bente; Uverud, Gunn-Marit; Holgersen, Katrine Høyer; Siqveland, Johan; Ruud, Torleif. (2022) Similarities and differences between service users’ and carers’ experiences of crisis resolution teams in Norway: a survey. BMC Psychiatry
  Vitenskapelig artikkel
• Brattland, Heidi; Holgersen, Katrine Høyer; Vogel, Patrick A.; Anderson, Timothy; Ryum, Truls. (2022) An apprenticeship model in the training of psychotherapy students. Study protocol for a randomized controlled trial and qualitative investigation. PLOS ONE
  Vitenskapelig artikkel
• Holgersen, Katrine Høyer; Pedersen, Sindre Andre; Brattland, Heidi; Hynnekleiv, Torfinn. (2022) A scoping review of studies into crisis resolution teams in community mental health services. Nordic Journal of Psychiatry
  Vitenskapelig oversiktsartikkel

2021

• Holgersen, Katrine Høyer; Holte, Ingvild Rønneberg; Gluppe, Eva; Watne, Øyvind; Meisingset, Wenche Kojan; Rostad, Maja; Arentz, Marianne; Rosenlund, Anne Marit; Brattland, Heidi. (2021) Tidlig avklaring: ny tilnærming for vurdering og planlegging av behandling i poliklinisk psykisk helsevern. Tidsskrift for Norsk psykologforening (Psykologtidsskriftet)
  Vitenskapelig artikkel
• Hasselberg, Nina Eide; Holgersen, Katrine Høyer; Uverud, Gunn-Marit; Siqveland, Johan; Lloyd-Evans, Brynmor; Johnson, Sonia; Ruud, Torleif. (2021) Fidelity to an evidence-based model for crisis resolution teams: a cross-sectional multicentre study in Norway. BMC Psychiatry
  Vitenskapelig artikkel
• Ryum, Truls; Nordnes, Anne Martha Holmvåg; Brattland, Heidi; Holgersen, Katrine Høyer; Anderson, Timothy; Vogel, Patrick A.. (2021) En norsk pilotstudie av ferdighetstesten fasiliterende interpersonlige ferdigheter. Tidsskrift for Norsk psykologforening (Psykologtidsskriftet)
  Vitenskapelig artikkel

2020

• Holgersen, Katrine Høyer; Brønstad, Ingunn; Jensen, Marianne; Brattland, Heidi; Reitan, Solveig Merete Klæbo; Hassel, Anne Marit; Arentz, Marianne; Lara Cabrera, Mariela Loreto; Skjervold, Anne Elisabeth. (2020) A combined individual and group-based stabilization and skill training intervention versus treatment as usual for patients with long lasting posttraumatic reactions receiving outpatient treatment in specialized mental health care – a study protocol for a randomized controlled trial. Trials
  Vitenskapelig artikkel

2016

• Holgersen, Katrine Høyer; Kløckner, Christian; Bøe, Hans Jakob; Holen, Are. (2016) Sick Leave and Disability Across Three Decades after a Major Disaster. Journal of Nervous and Mental Disease
  Vitenskapelig artikkel

2011

• Holgersen, Katrine Høyer; Kløckner, Christian; Bøe, Hans Jakob; Weisæth, Lars; Holen, Are. (2011) Disaster Survivors in Their Third Decade: Trajectories of Initial Stress Responses and Long-Term Course of Mental Health. Journal of Traumatic Stress
  Vitenskapelig artikkel
• Holgersen, Katrine Høyer; Holen, Are. (2011) Survivors in their third decade after the North Sea oil rig disaster of 1980 Long-term perspectives on mentah health. NTNU
  Doktoravhandling
• Bøe, Hans Jakob; Holgersen, Katrine Høyer; Holen, Are. (2011) Mental Health Outcomes and Predictors of Chronic Disorders After the North Sea Oil Rig Disaster 27-Year Longitudinal Follow-Up Study. Journal of Nervous and Mental Disease
  Vitenskapelig artikkel

2010

• Holgersen, Katrine Høyer; Bøe, Hans Jakob; Holen, Are. (2010) Long-Term Perspectives on Posttraumatic Growth in Disaster Survivors. Journal of Traumatic Stress
  Vitenskapelig artikkel
• Bøe, Hans Jacob; Holgersen, Katrine Høyer; Holen, Are. (2010) Reactivation of posttraumatic stress in male disaster survivors: The role of residual symptoms. Journal of Anxiety Disorders
  Vitenskapelig artikkel
• Holgersen, Katrine Høyer; Bøe, Hans Jacob; Klöckner, Christian; Weisæth, Lars; Holen, Are. (2010) Initial Stress Responses in Relation to Outcome After Three Decades. Journal of Nervous and Mental Disease
  Vitenskapelig artikkel