Jan Ivar Røssberg

  • Consultant, Adjunct professor
  • +47 478 76 866
 

Personal page at UiO

 

Publications 2024

ENIGMA Clinical High Risk for Psychosis Working Group, Haas SS, Ge R, Agartz I, Amminger GP, Andreassen OA, Bachman P, Baeza I, Choi S, Colibazzi T, Cropley VL, de la Fuente-Sandoval C, Ebdrup BH, Fortea A, Fusar-Poli P, Glenthøj BY, Glenthøj LB, Haut KM, Hayes RA, Heekeren K, Hooker CI, Hwang WJ, Jahanshad N, Kaess M, Kasai K et al. (2024)
Normative Modeling of Brain Morphometry in Clinical High Risk for Psychosis
JAMA Psychiatry, 81 (1), 77-88
DOI 10.1001/jamapsychiatry.2023.3850, PubMed 37819650

Protić S, Wittmann L, Taubner S, Conejo-Cerón S, Ioannou Y, Heinonen E, Saliba A, Moreno-Peral P, Volkert J, Barkauskiene R, Julia Schmidt S, Rangel Santos Henriques MI, Pinheiro Mota C, Sales CMD, Røssberg JI, Adler A, Giacomo DD, Mucha Vieira F, Drndarević N, Ulberg R, Stepisnik Perdih T, Mestre JM (2024)
Mediators of Outcome in Trauma-Focused Psychotherapy with Youth: A Systematic Review
Trauma Violence Abuse, 15248380231223264 (in press)
DOI 10.1177/15248380231223264, PubMed 38281152

Zhu Y, Maikusa N, Radua J, Sämann PG, Fusar-Poli P, Agartz I, Andreassen OA, Bachman P, Baeza I, Chen X, Choi S, Corcoran CM, Ebdrup BH, Fortea A, Garani RR, Glenthøj BY, Glenthøj LB, Haas SS, Hamilton HK, Hayes RA, He Y, Heekeren K, Kasai K, Katagiri N, Kim M et al. (2024)
Using brain structural neuroimaging measures to predict psychosis onset for individuals at clinical high-risk
Mol Psychiatry (in press)
DOI 10.1038/s41380-024-02426-7, PubMed 38332374

Publications 2023

Dysthe KK, Røssberg JI, Brandtzaeg PB, Skjuve M, Haavet OR, Følstad A, Klovning A (2023)
Analyzing User-Generated Web-Based Posts of Adolescents' Emotional, Behavioral, and Symptom Responses to Beliefs About Depression: Qualitative Thematic Analysis
J Med Internet Res, 25, e37289
DOI 10.2196/37289, PubMed 36692944

Gohar SM, Hegelstad WTV, Auestad B, Haahr UH, Joa I, Johannessen JO, Larsen TK, Opjordsmoen S, Rund BR, Røssberg JI, Simonsen E, Friis S, Melle I (2023)
Association between early suicidal trajectories in first-episode psychosis and 10-year follow-up: TIPS registry-linked study
Lancet Psychiatry, 10 (7), 528-536
DOI 10.1016/S2215-0366(23)00156-6, PubMed 37353264

Haas SS, Ge R, Agartz I, Amminger GP, Andreassen OA, Bachman P, Baeza I, Choi S, Colibazzi T, Cropley VL, de la Fuente-Sandoval C, Ebdrup BH, Fortea A, Fusar-Poli P, Glenthøj BY, Glenthøj LB, Haut KM, Hayes RA, Heekeren K, Hooker CI, Hwang WJ, Jahanshad N, Kaess M, Kasai K, Katagiri N et al. (2023)
Normative modeling of brain morphometry in Clinical High-Risk for Psychosis
bioRxiv
DOI 10.1101/2023.01.17.523348, PubMed 36711551

Landrø NI, Harmer CJ, Blackwell SE, Bø R, Dawson G, Goodwin G, Hagen HS, Kingslake J, Klovning A, Klungsøyr O, Schjøtt-Pedersen O, Sæther AK, Torgersen KS, Vaaler A, Andreassen OA, Røssberg JI (2023)
Combining antidepressants and attention bias modification in primary health care (DEPTREAT): Protocol for a pragmatic randomized controlled trial
Contemp Clin Trials, 133, 107326
DOI 10.1016/j.cct.2023.107326, PubMed 37652355

Taubner S, Ioannou Y, Saliba A, Sales CMD, Volkert J, Protić S, Adler A, Barkauskiene R, Conejo-Cerón S, Di Giacomo D, Mestre JM, Moreno-Peral P, Vieira FM, Mota CP, Henriques MIRS, Røssberg JI, Perdih TS, Schmidt SJ, Zettl M, Ulberg R, Heinonen E (2023)
Mediators of outcome in adolescent psychotherapy and their implications for theories and mechanisms of change: a systematic review
Eur Child Adolesc Psychiatry (in press)
DOI 10.1007/s00787-023-02186-9, PubMed 36918434

Øvstebø RB, Pedersen G, Wilberg T, Røssberg JI, Dahl HSJ, Kvarstein EH (2023)
Countertransference in the treatment of patients with personality disorders: A longitudinal study
Psychother Res, 1-15 (in press)
DOI 10.1080/10503307.2023.2279645, PubMed 37963354

Publications 2022

Baklund L, Røssberg JI, Møller P (2022)
Linguistic markers and basic self-disturbances among adolescents at risk of psychosis. A qualitative study
EClinicalMedicine, 55, 101733
DOI 10.1016/j.eclinm.2022.101733, PubMed 36386038

Baldwin H, Radua J, Antoniades M, Haas SS, Frangou S, Agartz I, Allen P, Andreassen OA, Atkinson K, Bachman P, Baeza I, Bartholomeusz CF, Chee MWL, Colibazzi T, Cooper RE, Corcoran CM, Cropley VL, Ebdrup BH, Fortea A, Glenthøj LB, Hamilton HK, Haut KM, Hayes RA, He Y, Heekeren K et al. (2022)
Neuroanatomical heterogeneity and homogeneity in individuals at clinical high risk for psychosis
Transl Psychiatry, 12 (1), 297
DOI 10.1038/s41398-022-02057-y, PubMed 35882855

Eielsen M, Ulvenes PG, Røssberg JI, Høstmælingen A, Soma CS, Wampold BE (2022)
The Effectiveness of an Intensive Inpatient Psychotherapy Program for Chronic Depression: A naturalistic comparison with wait list
BMC Psychiatry, 22 (1), 745
DOI 10.1186/s12888-022-04381-5, PubMed 36451114

Gjerdalen OS, Lystad JU, Bull H, Ringen PA, Røssberg JI, Martinsen EW, Ueland T, Falkum E, Evensen S (2022)
Vocational rehabilitation augmented with cognitive behavioral therapy or cognitive remediation for individuals with schizophrenia: a 5-year follow-up study
Nord J Psychiatry, 77 (1), 23-30
DOI 10.1080/08039488.2022.2042598, PubMed 35209785

Kvam TM, Goksøyr IW, Stewart LH, Repantis D, Røssberg JI, Andreassen OA (2022)
Study protocol for "MDMA-assisted therapy as a treatment for major depressive disorder: A proof of principle study"
Front Psychiatry, 13, 954388
DOI 10.3389/fpsyt.2022.954388, PubMed 36386973

Malkomsen A, Røssberg JI, Dammen T, Wilberg T, Løvgren A, Ulberg R, Evensen J (2022)
How therapists in cognitive behavioral and psychodynamic therapy reflect upon the use of metaphors in therapy: a qualitative study
BMC Psychiatry, 22 (1), 433
DOI 10.1186/s12888-022-04083-y, PubMed 35761306

Mestre JM, Taubner S, Mota CP, Rangel Henriques M, Saliba A, Heinonen E, Ramos S, Moreno-Peral P, Volkert J, Adler A, Barkauskiene R, Conejo-Cerón S, Di Giacomo D, Ioannou Y, Mucha Vieira F, Røssberg JI, Sales CMD, Schmidt SJ, Stepisnik Perdih T, Ulberg R, Protić S (2022)
Theories of Change and Mediators of Psychotherapy Effectiveness in Adolescents With Externalising Behaviours: A Systematic Review
Front Psychiatry, 12, 730921
DOI 10.3389/fpsyt.2021.730921, PubMed 35095586

Van Hoy A, Rzeszutek M, Pięta M, Mestre JM, Rodríguez-Mora Á, Midgley N, Omylinska-Thurston J, Dopierala A, Falkenström F, Ferlin J, Gergov V, Lazić M, Ulberg R, Røssberg JI, Hancheva C, Stoyanova S, Schmidt SJ, Podina I, Ferreira N, Kagialis A, Löffler-Stastka H, Gruszczyńska E (2022)
Burnout among psychotherapists: a cross-cultural value survey among 12 European countries during the coronavirus disease pandemic
Sci Rep, 12 (1), 13527
DOI 10.1038/s41598-022-17669-z, PubMed 35941352

Van Hoy A, Rzeszutek M, Pięta M, Mestre JM, Rodríguez-Mora Á, Midgley N, Omylinska-Thurston J, Dopierala A, Falkenström F, Ferlin J, Gergov V, Lazić M, Ulberg R, Røssberg JI, Hancheva C, Stoyanova S, Schmidt SJ, Podina IR, Ferreira N, Kagialis A, Löffler-Stastka H, Gruszczyńska E (2022)
Subjective well-being among psychotherapists during the coronavirus disease pandemic: A cross-cultural survey from 12 european countries
J Psychiatr Res, 154, 315-323
DOI 10.1016/j.jpsychires.2022.07.065, PubMed 35994913

Publications 2021

Bahrami S, Shadrin A, Frei O, O'Connell KS, Bettella F, Krull F, Fan CC, Røssberg JI, Hindley G, Ueland T, Dale AM, Djurovic S, Steen NE, Smeland OB, Andreassen OA (2021)
Genetic loci shared between major depression and intelligence with mixed directions of effect
Nat Hum Behav, 5 (6), 795-801
DOI 10.1038/s41562-020-01031-2, PubMed 33462475

Conejo-Cerón S, Taubner S, Heinonen E, Adler A, Barkauskiene R, Di Giacomo D, Ioannou Y, Mestre JM, Henriques MR, Mota CP, Protić S, Raleva M, Vieira FM, Røssberg JI, Sales CMD, Saliba A, Schmidt SJ, Perdih TS, Ulberg R, Volkert J, Moreno-Peral P (2021)
Mediators in Psychological Treatments for Anxiety and Depression in Adolescents and Young People: A Protocol of a Systematic Review
Front Psychol, 12, 708436
DOI 10.3389/fpsyg.2021.708436, PubMed 34367033

Dysthe KK, Haavet OR, Røssberg JI, Brandtzaeg PB, Følstad A, Klovning A (2021)
Finding Relevant Psychoeducation Content for Adolescents Experiencing Symptoms of Depression: Content Analysis of User-Generated Online Texts
J Med Internet Res, 23 (9), e28765
DOI 10.2196/28765, PubMed 34591021

ENIGMA Clinical High Risk for Psychosis Working Group, Jalbrzikowski M, Hayes RA, Wood SJ, Nordholm D, Zhou JH, Fusar-Poli P, Uhlhaas PJ, Takahashi T, Sugranyes G, Kwak YB, Mathalon DH, Katagiri N, Hooker CI, Smigielski L, Colibazzi T, Via E, Tang J, Koike S, Rasser PE, Michel C, Lebedeva I, Hegelstad WTV, de la Fuente-Sandoval C, Waltz JA et al. (2021)
Association of Structural Magnetic Resonance Imaging Measures With Psychosis Onset in Individuals at Clinical High Risk for Developing Psychosis: An ENIGMA Working Group Mega-analysis
JAMA Psychiatry, 78 (7), 753-766
DOI 10.1001/jamapsychiatry.2021.0638, PubMed 33950164

Lockertsen V, Holm LAW, Nilsen L, Rø Ø, Burger LM, Røssberg JI (2021)
The transition process between child and adolescent mental services and adult mental health services for patients with anorexia nervosa: a qualitative study of the parents' experiences
J Eat Disord, 9 (1), 45
DOI 10.1186/s40337-021-00404-w, PubMed 33849646

Malkomsen A, Røssberg JI, Dammen T, Wilberg T, Løvgren A, Horgen Evensen J (2021)
The Synergistic Process of Improvement in Cognitive Behavioral Therapy for Major Depression
Int J Environ Res Public Health, 18 (5)
DOI 10.3390/ijerph18052292, PubMed 33652563

Malkomsen A, Røssberg JI, Dammen T, Wilberg T, Løvgren A, Ulberg R, Evensen J (2021)
Digging down or scratching the surface: how patients use metaphors to describe their experiences of psychotherapy
BMC Psychiatry, 21 (1), 533
DOI 10.1186/s12888-021-03551-1, PubMed 34706691

Ottesen A, T V Hegelstad W, Joa I, Opjordsmoen SE, Rund BR, Røssberg JI, Simonsen E, Johannessen JO, Larsen TK, Haahr UH, McGlashan TH, Friis S, Melle I (2021)
Childhood trauma, antipsychotic medication, and symptom remission in first-episode psychosis
Psychol Med, 53 (6), 2399-2408
DOI 10.1017/S003329172100427X, PubMed 37144963

Røssberg JI, Evensen J, Dammen T, Wilberg T, Klungsøyr O, Jones M, Bøen E, Egeland R, Breivik R, Løvgren A, Ulberg R (2021)
Mechanisms of change and heterogeneous treatment effects in psychodynamic and cognitive behavioural therapy for patients with depressive disorder: a randomized controlled trial
BMC Psychol, 9 (1), 11
DOI 10.1186/s40359-021-00517-6, PubMed 33482927

Taubner S, Saliba A, Heinonen E, Protić S, Volkert J, Adler A, Barkauskiene R, Conejo Cerón S, Di Giacomo D, Ioannou Y, Mestre JM, Moreno-Peral P, Mucha Vieira F, Mota CP, Raleva M, Rangel Santos Henriques MI, Røssberg JI, Schmidt SJ, Stepišnik Perdih T, Ulberg R, Sales CMD (2021)
Mediators and theories of change in psychotherapy with adolescents: a systematic review protocol
BMJ Open, 11 (3), e042411
DOI 10.1136/bmjopen-2020-042411, PubMed 33674369

Volkert J, Taubner S, Barkauskiene R, Mestre JM, Sales CMD, Thiele V, Saliba A, Protić S, Adler A, Conejo-Cerón S, Di Giacomo D, Ioannou Y, Moreno-Peral P, Vieira FM, Mota CP, Raleva M, Rangel Santos Henriques MI, Røssberg JI, Schmidt SJ, Perdih TS, Ulberg R, Heinonen E (2021)
Mediators and Theories of Change in Psychotherapy for Young People With Personality Disorders: A Systematic Review Protocol
Front Psychol, 12, 703095
DOI 10.3389/fpsyg.2021.703095, PubMed 34616334

Værnes TG, Røssberg JI, Melle I, Nelson B, Romm KL, Møller P (2021)
Basic self-disturbance in subjects at clinical high risk for psychosis: Relationship with clinical and functional outcomes at one year follow-up
Psychiatry Res, 300, 113942
DOI 10.1016/j.psychres.2021.113942, PubMed 33940444

Værnes TG, Røssberg JI, Melle I, Nelson B, Romm KL, Møller P (2021)
Basic self-disturbance trajectories in clinical high risk for psychosis: a one-year follow-up study
Eur Arch Psychiatry Clin Neurosci, 272 (6), 1007-1019
DOI 10.1007/s00406-021-01349-6, PubMed 34783878

Publications 2020

Breivik R, Wilberg T, Evensen J, Røssberg JI, Dahl HSJ, Pedersen G (2020)
Countertransference feelings and personality disorders: a psychometric evaluation of a brief version of the Feeling Word Checklist (FWC-BV)
BMC Psychiatry, 20 (1), 141
DOI 10.1186/s12888-020-02556-6, PubMed 32228529

Jones M, Råbu M, Røssberg JI, Ulberg R (2020)
Therapists' Experiences of Psychodynamic Therapy with and without Transference Interventions for Adolescents with Depression
Int J Environ Res Public Health, 17 (13)
DOI 10.3390/ijerph17134628, PubMed 32605079

Lockertsen V, Nilsen L, Holm LAW, Rø Ø, Burger LM, Røssberg JI (2020)
Experiences of patients with anorexia nervosa during the transition from child and adolescent mental health services to adult mental health services
J Eat Disord, 8, 37
DOI 10.1186/s40337-020-00313-4, PubMed 32793350

Lockertsen V, Nilsen L, Holm LAW, Rø Ø, Burger LM, Røssberg JI (2020)
Mental health professionals' experiences transitioning patients with anorexia nervosa from child/adolescent to adult mental health services: a qualitative study
BMC Health Serv Res, 20 (1), 891
DOI 10.1186/s12913-020-05740-2, PubMed 32958078

Løvgren A, Røssberg JI, Engebretsen E, Ulberg R (2020)
Improvement in Psychodynamic Psychotherapy for Depression: A Qualitative Study of the Patients' Perspective
Int J Environ Res Public Health, 17 (18)
DOI 10.3390/ijerph17186843, PubMed 32961671

Publications 2019

Løvgren A, Røssberg JI, Nilsen L, Engebretsen E, Ulberg R (2019)
How do adolescents with depression experience improvement in psychodynamic psychotherapy? A qualitative study
BMC Psychiatry, 19 (1), 95
DOI 10.1186/s12888-019-2080-0, PubMed 30898111

Rossberg JI (2019)
PRACTICAL PSYCHIATRY
Tidsskr. Nor. Laegeforen., 139 (10), 972

Sönmez N, Romm KL, Østefjells T, Grande M, Jensen LH, Hummelen B, Tesli M, Melle I, Røssberg JI (2019)
Cognitive behavior therapy in early psychosis with a focus on depression and low self-esteem: A randomized controlled trial
Compr Psychiatry, 97, 152157
DOI 10.1016/j.comppsych.2019.152157, PubMed 31935529

Værnes TG, Røssberg JI, Møller P (2019)
Anomalous self-experiences are strongly associated with negative symptoms in a clinical high-risk for psychosis sample
Compr Psychiatry, 93, 65-72
DOI 10.1016/j.comppsych.2019.07.003, PubMed 31351243

Weibell MA, Johannessen JO, Auestad B, Bramness J, Brønnick K, Haahr U, Joa I, Larsen TK, Melle I, Opjordsmoen S, Rund BR, Røssberg JI, Simonsen E, Vaglum P, Stain H, Friis S, Hegelstad WTV (2019)
Early Substance Use Cessation Improves Cognition-10 Years Outcome in First-Episode Psychosis Patients
Front Psychiatry, 10, 495
DOI 10.3389/fpsyt.2019.00495, PubMed 31354551

Publications 2018

Bramness JG, Røssberg JI (2018)
[Antipsychotic drugs for more than two years?]
Tidsskr Nor Laegeforen, 138 (19)
DOI 10.4045/tidsskr.18.0844, PubMed 30497254

Gardsjord ES, Romm KL, Røssberg JI, Friis S, Barder HE, Evensen J, Haahr U, Ten Velden Hegelstad W, Joa I, Johannessen JO, Langeveld J, Larsen TK, Opjordsmoen S, Rund BR, Simonsen E, Vaglum P, Melle I (2018)
Depression and functioning are important to subjective quality of life after a first episode psychosis
Compr Psychiatry, 86, 107-114
DOI 10.1016/j.comppsych.2018.07.014, PubMed 30114656

Rossberg JI, Smedslund G, Stoltenberg C (2018)
Antipsychotics for more than 2 years?
Tidsskr. Nor. Laegeforen., 138 (19), 1798-1800

Røberg L, Nilsen L, Røssberg JI (2018)
How do men with severe sexual and physical childhood traumatization experience trauma-stabilizing group treatment? A qualitative study
Eur J Psychotraumatol, 9 (1), 1541697
DOI 10.1080/20008198.2018.1541697, PubMed 30455852

Værnes TG, Røssberg JI, Møller P (2018)
Anomalous Self-Experiences: Markers of Schizophrenia Vulnerability or Symptoms of Depersonalization Disorder? A Phenomenological Investigation of Two Cases
Psychopathology, 51 (3), 198-209
DOI 10.1159/000488462, PubMed 29730662

Publications 2017

Dahl HSJ, Ulberg R, Marble A, Gabbard GO, Rossberg JI, Hoglend P (2017)
Beyond the Statistics: A Case Comparison Study of Victor and Tim
Psychoanal. Psychol., 34 (4), 461-477
DOI 10.1037/pap0000085

Gardsjord ES, Romm KL, Røssberg JI, Friis S, Barder HE, Evensen J, Haahr U, Ten Velden Hegelstad W, Joa I, Johannessen JO, Langeveld J, Larsen TK, Opjordsmoen S, Rund BR, Simonsen E, Vaglum P, McGlashan T, Melle I (2017)
Is going into stable symptomatic remission associated with a more positive development of life satisfaction? A 10-year follow-up study of first episode psychosis
Schizophr Res, 193, 364-369
DOI 10.1016/j.schres.2017.07.006, PubMed 28701275

Langeveld J, Bjørkly S, Evensen J, Joa I, Johannessen JO, Larsen TK, Melle I, Opjordsmoen S, Røssberg JI, Rund BR, Simonsen E, Vaglum P, Velden WT, McGlashan T, Friis S (2017)
A 10-year follow-up study of violent victimization in first episode psychosis: Risk and protective factors
Psychiatry Res, 259, 545-549
DOI 10.1016/j.psychres.2017.11.013, PubMed 29172178

Rossberg JI (2017)
THE COMPETENT PSYCHIATES
Tidsskr. Nor. Laegeforen., 137 (20), 1630

Røssberg JI (2017)
[Not Available]
Tidsskr Nor Laegeforen, 137 (20)
DOI 10.4045/tidsskr.17.0575, PubMed 29094577

Røssberg JI, Andreassen OA, Ilner SO (2017)
[Medication-free hospital records - a measure not based on knowledge]
Tidsskr Nor Laegeforen, 137 (6), 426-427
DOI 10.4045/tidsskr.17.0091, PubMed 28332789

Røssberg JI, Andreassen OA, Ilner SO (2017)
[Not Available]
Tidsskr Nor Laegeforen, 137 (9), 594-595
DOI 10.4045/tidsskr.17.0288, PubMed 28468447

Østefjells T, Lystad JU, Berg AO, Hagen R, Loewy R, Sandvik L, Melle I, Røssberg JI (2017)
Metacognitive beliefs mediate the effect of emotional abuse on depressive and psychotic symptoms in severe mental disorders
Psychol Med, 47 (13), 2323-2333
DOI 10.1017/S0033291717000848, PubMed 28397634

Publications 2016

Gardsjord ES, Romm KL, Friis S, Barder HE, Evensen J, Haahr U, ten Velden Hegelstad W, Joa I, Johannessen JO, Langeveld J, Larsen TK, Opjordsmoen S, Rund BR, Simonsen E, Vaglum P, McGlashan T, Melle I, Røssberg JI (2016)
Subjective quality of life in first-episode psychosis. A ten year follow-up study
Schizophr Res, 172 (1-3), 23-8
DOI 10.1016/j.schres.2016.02.034, PubMed 26947210

Hegelstad WT, Bronnick KS, Barder HE, Evensen JH, Haahr U, Joa I, Johannessen JO, Langeveld J, Larsen TK, Melle I, Opjordsmoen S, Rund BR, Rossberg JI, Simonsen E, Vaglum PW, McGlashan TH, Friis S (2016)
Preventing Poor Vocational Functioning in Psychosis Through Early Intervention
Psychiatr Serv, 68 (1), 100-103
DOI 10.1176/appi.ps.201500451, PubMed 27582238

Haahr UH, Larsen TK, Simonsen E, Rund BR, Joa I, Rossberg JI, Johannessen JO, Langeveld J, Evensen J, Trauelsen AMH, Vaglum P, Opjordsmoen S, Hegelstad WTV, Friis S, McGlashan T, Melle I (2016)
Relation between premorbid adjustment, duration of untreated psychosis and close interpersonal trauma in first-episode psychosis
Early Interv Psychiatry, 12 (3), 316-323
DOI 10.1111/eip.12315, PubMed 26800653

Tveter AL, Bakken TL, Rossberg JI, Bech-Pedersen E, Bramness JG (2016)
Short communication: reliability and validity of the UKU Side Effect Rating Scale for adults with intellectual disabilities
Adv. Ment. Health Intellet. Disabil., 10 (3), 166-171
DOI 10.1108/AMHID-10-2015-0051

Østefjells T, Melle I, Aminoff SR, Hellvin T, Hagen R, Lagerberg TV, Lystad JU, Røssberg JI (2016)
An exploration of metacognitive beliefs and thought control strategies in bipolar disorder
Compr Psychiatry, 73, 84-92
DOI 10.1016/j.comppsych.2016.11.008, PubMed 27918949

Publications 2015

Athanasiu L, Smorr LL, Tesli M, Røssberg JI, Sønderby IE, Spigset O, Djurovic S, Andreassen OA (2015)
Genome-wide association study identifies common variants associated with pharmacokinetics of psychotropic drugs
J Psychopharmacol, 29 (8), 884-91
DOI 10.1177/0269881115584469, PubMed 25944848

Friis S, Melle I, Johannessen JO, Røssberg JI, Barder HE, Evensen JH, Haahr U, Ten Velden Hegelstad W, Joa I, Langeveld J, Larsen TK, Opjordsmoen S, Rund BR, Simonsen E, Vaglum PW, McGlashan TH (2015)
Early Predictors of Ten-Year Course in First-Episode Psychosis
Psychiatr Serv, 67 (4), 438-43
DOI 10.1176/appi.ps.201400558, PubMed 26567932

Nilsen L, Norheim I, Frich JC, Friis S, Røssberg JI (2015)
Challenges for group leaders working with families dealing with early psychosis: a qualitative study
BMC Psychiatry, 15, 141
DOI 10.1186/s12888-015-0540-8, PubMed 26134829

Rund BR, Barder HE, Evensen J, Haahr U, ten Velden Hegelstad W, Joa I, Johannessen JO, Langeveld J, Larsen TK, Melle I, Opjordsmoen S, Røssberg JI, Simonsen E, Sundet K, Vaglum P, McGlashan T, Friis S (2015)
Neurocognition and Duration of Psychosis: A 10-year Follow-up of First-Episode Patients
Schizophr Bull, 42 (1), 87-95
DOI 10.1093/schbul/sbv083, PubMed 26101305

Østefjells T, Melle I, Hagen R, Romm KL, Sönmez N, Andreassen OA, Røssberg JI (2015)
Unhelpful metacognitive beliefs in early psychosis are associated with affective symptoms and childhood social adjustment
Schizophr Res, 169 (1-3), 280-285
DOI 10.1016/j.schres.2015.10.026, PubMed 26519990

Publications 2014

Barder HE, Sundet K, Rund B, Evensen J, Haahr U, Hegelstad W, Joa I, Johannessen JO, Langeveld J, Larsen TK, Melle I, Opjordsmoen S, Rossberg JI, Simonsen E, Vaglum P, McGlashan T, Friis S (2014)
Ten year neurocognitive trajectories in first-episode psychosis (vol 7, pg 643, 2013)
Front. Hum. Neurosci., 8, 319
DOI 10.3389/fnhum.2014.00319

Barder HE, Sundet K, Rund BR, Evensen J, Haahr U, ten Velden Hegelstad W, Joa I, Johannessen JO, Langeveld J, Larsen TK, Melle I, Opjordsmoen S, Røssberg JI, Simonsen E, Vaglum P, McGlashan T, Friis SP (2014)
10 year course of IQ in first-episode psychosis: relationship between duration of psychosis and long-term intellectual trajectories
Psychiatry Res, 225 (3), 515-21
DOI 10.1016/j.psychres.2014.11.054, PubMed 25535007

Dahl HS, Røssberg JI, Crits-Christoph P, Gabbard GO, Hersoug AG, Perry JC, Ulberg R, Høglend PA (2014)
Long-term effects of analysis of the patient-therapist relationship in the context of patients' personality pathology and therapists' parental feelings
J Consult Clin Psychol, 82 (3), 460-71
DOI 10.1037/a0036410, PubMed 24660675

Dieset I, Haukvik UK, Melle I, Røssberg JI, Ueland T, Hope S, Dale AM, Djurovic S, Aukrust P, Agartz I, Andreassen OA (2014)
Association between altered brain morphology and elevated peripheral endothelial markers--implications for psychotic disorders
Schizophr Res, 161 (2-3), 222-8
DOI 10.1016/j.schres.2014.11.006, PubMed 25433965

Haram M, Tesli M, Dieset I, Steen NE, Røssberg JI, Djurovic S, Andreassen OA, Melle I (2014)
An attempt to identify single nucleotide polymorphisms contributing to possible relationships between personality traits and oxytocin-related genes
Neuropsychobiology, 69 (1), 25-30
DOI 10.1159/000356965, PubMed 24458227

Langeveld J, Bjørkly S, Auestad B, Barder H, Evensen J, Ten Velden Hegelstad W, Joa I, Johannessen JO, Larsen TK, Melle I, Opjordsmoen S, Røssberg JI, Rund BR, Simonsen E, Vaglum P, McGlashan T, Friis S (2014)
Treatment and violent behavior in persons with first episode psychosis during a 10-year prospective follow-up study
Schizophr Res, 156 (2-3), 272-6
DOI 10.1016/j.schres.2014.04.010, PubMed 24837683

Nilsen L, Frich JC, Friis S, Norheim I, Røssberg JI (2014)
Participants' perceived benefits of family intervention following a first episode of psychosis: a qualitative study
Early Interv Psychiatry, 10 (2), 152-9
DOI 10.1111/eip.12153, PubMed 24861325

Nilsen L, Frich JC, Friis S, Røssberg JI (2014)
Patients' and family members' experiences of a psychoeducational family intervention after a first episode psychosis: a qualitative study
Issues Ment Health Nurs, 35 (1), 58-68
DOI 10.3109/01612840.2013.837992, PubMed 24350752

Sonmez N, Hagen R, Andreassen OA, Romm KL, Grande M, Jensen LH, Morrison AP, Melle I, Rossberg JI (2014)
Cognitive Behavior Therapy in First-Episode Psychosis With a Focus on Depression, Anxiety, and Self-Esteem
Cogn. Behav. Pract., 21 (1), 43-54

Sönmez N, Røssberg JI, Evensen J, Barder HE, Haahr U, Ten Velden Hegelstad W, Joa I, Johannessen JO, Langeveld H, Larsen TK, Melle I, Opjordsmoen S, Rund BR, Simonsen E, Vaglum P, McGlashan T, Friis S (2014)
Depressive symptoms in first-episode psychosis: a 10-year follow-up study
Early Interv Psychiatry, 10 (3), 227-33
DOI 10.1111/eip.12163, PubMed 24956976

Tveter AL, Bakken TL, Bramness JG, Rossberg JI (2014)
Adjustment of the UKU Side Effect Rating Scale for adults with intellectual disabilities. A pilot study
Adv. Ment. Health Intellet. Disabil., 8 (4), 260-267
DOI 10.1108/AMHID-11-2013-0064

Publications 2013

Barder HE, Sundet K, Rund BR, Evensen J, Haahr U, Ten Velden Hegelstad W, Joa I, Johannessen JO, Langeveld H, Larsen TK, Melle I, Opjordsmoen S, Røssberg JI, Simonsen E, Vaglum P, McGlashan T, Friis S (2013)
Neurocognitive development in first episode psychosis 5 years follow-up: associations between illness severity and cognitive course
Schizophr Res, 149 (1-3), 63-9
DOI 10.1016/j.schres.2013.06.016, PubMed 23810121

Barder HE, Sundet K, Rund BR, Evensen J, Haahr U, Ten Velden Hegelstad W, Joa I, Johannessen JO, Langeveld J, Larsen TK, Melle I, Opjordsmoen S, Røssberg JI, Simonsen E, Vaglum P, McGlashan T, Friis S (2013)
Ten year neurocognitive trajectories in first-episode psychosis
Front Hum Neurosci, 7, 643
DOI 10.3389/fnhum.2013.00643, PubMed 24109449

Borge L, Angel OH, Røssberg JI (2013)
Learning through cognitive milieu therapy among inpatients with dual diagnosis: a qualitative study of interdisciplinary collaboration
Issues Ment Health Nurs, 34 (4), 229-39
DOI 10.3109/01612840.2012.740766, PubMed 23566185

Borge L, Røssberg JI, Sverdrup S (2013)
Cognitive milieu therapy and physical activity: experiences of mastery and learning among patients with dual diagnosis
J Psychiatr Ment Health Nurs, 20 (10), 932-42
DOI 10.1111/jpm.12090, PubMed 23701474

Hansen CF, Torgalsbøen AK, Røssberg JI, Romm KL, Andreassen OA, Bell MD, Melle I (2013)
Object relations, reality testing, and social withdrawal in schizophrenia and bipolar disorder
J Nerv Ment Dis, 201 (3), 222-5
DOI 10.1097/NMD.0b013e3182848ae0, PubMed 23407207

Larsson S, Aas M, Klungsøyr O, Agartz I, Mork E, Steen NE, Barrett EA, Lagerberg TV, Røssberg JI, Melle I, Andreassen OA, Lorentzen S (2013)
Patterns of childhood adverse events are associated with clinical characteristics of bipolar disorder
BMC Psychiatry, 13, 97
DOI 10.1186/1471-244X-13-97, PubMed 23522391

Sönmez N, Romm KL, Andreasssen OA, Melle I, Røssberg JI (2013)
Depressive symptoms in first episode psychosis: a one-year follow-up study
BMC Psychiatry, 13, 106
DOI 10.1186/1471-244X-13-106, PubMed 23560591

ten Velden Hegelstad W, Joa I, Barder H, Evensen J, Haahr U, Johannessen JO, Langeveld J, Melle I, Opjordsmoen S, Røssberg JI, Rund BR, Simonsen E, Vaglum P, McGlashan T, Friis S, Larsen TK (2013)
Variation in duration of untreated psychosis in an 18-year perspective
Early Interv Psychiatry, 8 (4), 323-31
DOI 10.1111/eip.12057, PubMed 23773272

Publications 2012

Bakken TL, Rossberg JI, Friis S (2012)
The ward atmosphere scale for psychiatric inpatients with intellectual disability: a pilot study
Adv. Ment. Health Intellet. Disabil., 6 (5), 265-272
DOI 10.1108/20441281211261159

Dieset I, Djurovic S, Tesli M, Hope S, Mattingsdal M, Michelsen A, Joa I, Larsen TK, Agartz I, Melle I, Røssberg JI, Aukrust P, Andreassen OA, Ueland T (2012)
Up-regulation of NOTCH4 gene expression in bipolar disorder
Am J Psychiatry, 169 (12), 1292-300
DOI 10.1176/appi.ajp.2012.11091431, PubMed 23212060

Dieset I, Hope S, Ueland T, Bjella T, Agartz I, Melle I, Aukrust P, Røssberg JI, Andreassen OA (2012)
Cardiovascular risk factors during second generation antipsychotic treatment are associated with increased C-reactive protein
Schizophr Res, 140 (1-3), 169-74
DOI 10.1016/j.schres.2012.06.040, PubMed 22817875

Evensen J, Røssberg JI, Barder H, Haahr U, Hegelstad Wt, Joa I, Johannessen JO, Larsen TK, Melle I, Opjordsmoen S, Rund BR, Simonsen E, Sundet K, Vaglum P, Friis S, McGlashan T (2012)
Apathy in first episode psychosis patients: a ten year longitudinal follow-up study
Schizophr Res, 136 (1-3), 19-24
DOI 10.1016/j.schres.2011.12.019, PubMed 22285655

Evensen J, Røssberg JI, Barder H, Haahr U, Hegelstad WT, Joa I, Johannessen JO, Larsen TK, Melle I, Opjordsmoen S, Rund BR, Simonsen E, Vaglum P, McGlashan T, Friis S (2012)
Flat affect and social functioning: a 10 year follow-up study of first episode psychosis patients
Schizophr Res, 139 (1-3), 99-104
DOI 10.1016/j.schres.2012.04.019, PubMed 22627124

Friis S, Barder H, Evensen JH, Haahr U, Hegelstad WT, Joa I, Johannessen JO, Langeveld J, Larsen TK, Melle I, Opjordsmoen S, Rund BR, Røssberg JI, Simonsen E, Sundet K, Vaglum P, McGlashan T (2012)
The TIPS study and bias: replies to Dr Amos
Aust N Z J Psychiatry, 46 (9), 905-7
DOI 10.1177/0004867412451344, PubMed 22956571

Hansen CF, Torgalsbøen AK, Røssberg JI, Andreassen OA, Bell MD, Melle I (2012)
Object relations and reality testing in schizophrenia, bipolar disorders, and healthy controls: differences in profiles and clinical correlates
Compr Psychiatry, 53 (8), 1200-7
DOI 10.1016/j.comppsych.2012.04.003, PubMed 22578986

Hegelstad WT, Larsen TK, Auestad B, Evensen J, Haahr U, Joa I, Johannesen JO, Langeveld J, Melle I, Opjordsmoen S, Rossberg JI, Rund BR, Simonsen E, Sundet K, Vaglum P, Friis S, McGlashan T (2012)
Long-term follow-up of the TIPS early detection in psychosis study: effects on 10-year outcome
Am J Psychiatry, 169 (4), 374-80
DOI 10.1176/appi.ajp.2011.11030459, PubMed 22407080

Haahr U, Simonsen E, Røssberg JI, Johannessen JO, Larsen TK, Melle I, Opjordsmoen S, Rund BR, Vaglum P, Friis S, McGlashan T (2012)
Patient satisfaction with treatment in first-episode psychosis
Nord J Psychiatry, 66 (5), 329-35
DOI 10.3109/08039488.2011.644808, PubMed 22250962

Langeveld J, Andreassen OA, Auestad B, Færden A, Hauge LJ, Joa I, Johannessen JO, Melle I, Rund BR, Røssberg JI, Simonsen E, Vaglum P, Larsen TK (2012)
Is there an optimal factor structure of the Positive and Negative Syndrome Scale in patients with first-episode psychosis?
Scand J Psychol, 54 (2), 160-5
DOI 10.1111/sjop.12017, PubMed 23252448

Larsson S, Andreassen OA, Aas M, Røssberg JI, Mork E, Steen NE, Barrett EA, Lagerberg TV, Peleikis D, Agartz I, Melle I, Lorentzen S (2012)
High prevalence of childhood trauma in patients with schizophrenia spectrum and affective disorder
Compr Psychiatry, 54 (2), 123-7
DOI 10.1016/j.comppsych.2012.06.009, PubMed 22901835

Ten Velden Hegelstad W, Haahr U, Larsen TK, Auestad B, Barder H, Evensen J, Joa I, Johannessen JO, Langeveld J, Melle I, Opjordsmoen S, Rossberg JI, Rund BR, Simonsen E, Vaglum P, McGlashan T, Friis S (2012)
Early detection, early symptom progression and symptomatic remission after ten years in a first episode of psychosis study
Schizophr Res, 143 (2-3), 337-43
DOI 10.1016/j.schres.2012.10.027, PubMed 23219862

Wirgenes KV, Sønderby IE, Haukvik UK, Mattingsdal M, Tesli M, Athanasiu L, Sundet K, Røssberg JI, Dale AM, Brown AA, Agartz I, Melle I, Djurovic S, Andreassen OA (2012)
TCF4 sequence variants and mRNA levels are associated with neurodevelopmental characteristics in psychotic disorders
Transl Psychiatry, 2 (5), e112
DOI 10.1038/tp.2012.39, PubMed 22832956

Publications 2011

Berg AO, Melle I, Rossberg JI, Romm KL, Larsson S, Lagerberg TV, Andreassen OA, Hauff E (2011)
Perceived discrimination is associated with severity of positive and depression/anxiety symptoms in immigrants with psychosis: a cross-sectional study
BMC Psychiatry, 11, 77
DOI 10.1186/1471-244X-11-77, PubMed 21548949

Bolstad A, Andreassen OA, Røssberg JI, Agartz I, Melle I, Tanum L (2011)
Previous hospital admissions and disease severity predict the use of antipsychotic combination treatment in patients with schizophrenia
BMC Psychiatry, 11, 126
DOI 10.1186/1471-244X-11-126, PubMed 21812996

Dahl HS, Røssberg JI, Bøgwald KP, Gabbard GO, Høglend PA (2011)
Countertransference feelings in one year of individual therapy: an evaluation of the factor structure in the Feeling Word Checklist-58
Psychother Res, 22 (1), 12-25
DOI 10.1080/10503307.2011.622312, PubMed 22040366

Evensen J, Røssberg JI, Haahr U, ten Velden Hegelstad W, Joa I, Johannessen JO, Langeveld H, Larsen TK, Melle I, Opjordsmoen S, Rund BR, Simonsen E, Sundet K, Vaglum P, Friis S, McGlashan T (2011)
Contrasting monosymptomatic patients with hallucinations and delusions in first-episode psychosis patients: a five-year longitudinal follow-up study
Psychopathology, 44 (2), 90-7
DOI 10.1159/000319789, PubMed 21228615

Høglend P, Hersoug AG, Bøgwald KP, Amlo S, Marble A, Sørbye Ø, Røssberg JI, Ulberg R, Gabbard GO, Crits-Christoph P (2011)
Effects of transference work in the context of therapeutic alliance and quality of object relations
J Consult Clin Psychol, 79 (5), 697-706
DOI 10.1037/a0024863, PubMed 21859184

Romm KL, Melle I, Thoresen C, Andreassen OA, Rossberg JI (2011)
Severe social anxiety in early psychosis is associated with poor premorbid functioning, depression, and reduced quality of life
Compr Psychiatry, 53 (5), 434-40
DOI 10.1016/j.comppsych.2011.06.002, PubMed 21821242

Romm KL, Rossberg JI, Hansen CF, Haug E, Andreassen OA, Melle I (2011)
Self-esteem is associated with premorbid adjustment and positive psychotic symptoms in early psychosis
BMC Psychiatry, 11, 136
DOI 10.1186/1471-244X-11-136, PubMed 21854599

Tandberg M, Ueland T, Sundet K, Haahr U, Joa I, Johannessen JO, Larsen TK, Opjordsmoen S, Rund BR, Røssberg JI, Simonsen E, Vaglum P, Melle I, Friis S, McGlashan T (2011)
Neurocognition and occupational functioning in patients with first-episode psychosis: a 2-year follow-up study
Psychiatry Res, 188 (3), 334-42
DOI 10.1016/j.psychres.2011.04.021, PubMed 21575993

Publications 2010

Barrett EA, Sundet K, Faerden A, Agartz I, Bratlien U, Romm KL, Mork E, Rossberg JI, Steen NE, Andreassen OA, Melle I (2010)
Suicidality in first episode psychosis is associated with insight and negative beliefs about psychosis
Schizophr Res, 123 (2-3), 257-62
DOI 10.1016/j.schres.2010.07.018, PubMed 20685083

Larsen TK, Melle I, Auestad B, Haahr U, Joa I, Johannessen JO, Opjordsmoen S, Rund BR, Rossberg JI, Simonsen E, Vaglum P, Friis S, McGlashan T (2010)
Early detection of psychosis: positive effects on 5-year outcome
Psychol Med, 41 (7), 1461-9
DOI 10.1017/S0033291710002023, PubMed 20942996

Melle I, Røssberg JI, Joa I, Friis S, Haahr U, Johannessen JO, Larsen TK, Opjordsmoen S, Rund BR, Simonsen E, Vaglum P, McGlashan T (2010)
The development of subjective quality of life over the first 2 years in first-episode psychosis
J Nerv Ment Dis, 198 (12), 864-9
DOI 10.1097/NMD.0b013e3181fe7258, PubMed 21135636

Opjordsmoen S, Friis S, Melle I, Haahr U, Johannessen JO, Larsen TK, Røssberg JI, Rund BR, Simonsen E, Vaglum P, McGlashan TH (2010)
A 2-year follow-up of involuntary admission's influence upon adherence and outcome in first-episode psychosis
Acta Psychiatr Scand, 121 (5), 371-6
DOI 10.1111/j.1600-0447.2009.01536.x, PubMed 20085554

Romm KL, Rossberg JI, Berg AO, Barrett EA, Faerden A, Agartz I, Andreassen OA, Melle I (2010)
Depression and depressive symptoms in first episode psychosis
J Nerv Ment Dis, 198 (1), 67-71
DOI 10.1097/NMD.0b013e3181c81fc0, PubMed 20061872

Romm KL, Rossberg JI, Berg AO, Hansen CF, Andreassen OA, Melle I (2010)
Assessment of social anxiety in first episode psychosis using the Liebowitz Social Anxiety scale as a self-report measure
Eur Psychiatry, 26 (2), 115-21
DOI 10.1016/j.eurpsy.2010.08.014, PubMed 21036553

Rossberg JI, Johannessen JO, Klungsoyr O, Opjordsmoen S, Evensen J, Fjell A, Haahr U, Joa I, Langeveld J, Larsen TK, Melle I, Rund BR, Simonsen E, ten Velden W, Vaglum P, Friis S, McGlashan T (2010)
Are multi family groups appropriate for patients with first episode psychosis? A 5-year naturalistic follow-up study
Acta Psychiatr Scand, 122 (5), 384-94
DOI 10.1111/j.1600-0447.2010.01571.x, PubMed 20491714

Rossberg JI, Karterud S, Pedersen G, Friis S (2010)
Psychiatric symptoms and countertransference feelings: an empirical investigation
Psychiatry Res, 178 (1), 191-5
DOI 10.1016/j.psychres.2009.09.019, PubMed 20452056

Simonsen E, Friis S, Opjordsmoen S, Mortensen EL, Haahr U, Melle I, Joa I, Johannessen JO, Larsen TK, Røssberg JI, Rund BR, Vaglum P, McGlashan TH (2010)
Early identification of non-remission in first-episode psychosis in a two-year outcome study
Acta Psychiatr Scand, 122 (5), 375-83
DOI 10.1111/j.1600-0447.2010.01598.x, PubMed 20722632

Steen NE, Tesli M, Kähler AK, Methlie P, Hope S, Barrett EA, Larsson S, Mork E, Løvås K, Røssberg JI, Agartz I, Melle I, Djurovic S, Lorentzen S, Berg JP, Andreassen OA (2010)
SRD5A2 is associated with increased cortisol metabolism in schizophrenia spectrum disorders
Prog Neuropsychopharmacol Biol Psychiatry, 34 (8), 1500-6
DOI 10.1016/j.pnpbp.2010.08.013, PubMed 20800085

Publications 2008

Nesset MB, Rossberg JI, Almvik R, Friis S (2008)
Can a focused staff training programme improve the ward atmosphere and patient satisfaction in a forensic psychiatric hospital? A pilot study
Scand J Caring Sci, 23 (1), 117-24
DOI 10.1111/j.1471-6712.2008.00597.x, PubMed 19170956

Rossberg JI, Karterud S, Pedersen G, Friis S (2008)
Specific personality traits evoke different countertransference reactions: an empirical study
J Nerv Ment Dis, 196 (9), 702-8
DOI 10.1097/NMD.0b013e318186de80, PubMed 18791432

Rossberg JI, Melle I, Opjordsmoen S, Friis S (2008)
The relationship between staff members' working conditions and patients' perceptions of the treatment environment
Int J Soc Psychiatry, 54 (5), 437-46
DOI 10.1177/0020764008090689, PubMed 18786905

Publications 2007

Faerden A, Nesvåg R, Barrett EA, Agartz I, Finset A, Friis S, Rossberg JI, Melle I (2007)
Assessing apathy: the use of the Apathy Evaluation Scale in first episode psychosis
Eur Psychiatry, 23 (1), 33-9
DOI 10.1016/j.eurpsy.2007.09.002, PubMed 18029152

Rossberg JI, Karterud S, Pedersen G, Friis S (2007)
An empirical study of countertransference reactions toward patients with personality disorders
Compr Psychiatry, 48 (3), 225-30
DOI 10.1016/j.comppsych.2007.02.002, PubMed 17445515

Publications 2006

Røssberg JI, Melle I, Opjordsmoen S, Friis S (2006)
Patient satisfaction and treatment environment: a 20-year follow-up study from an acute psychiatric ward
Nord J Psychiatry, 60 (2), 176-80
DOI 10.1080/08039480600583894, PubMed 16635939

Publications 2005

Røssberg JI (2005)
Evaluations of inpatient units with emphasis on the ward atmosphere scale
In Series of dissertations submitted to the Faculty of Medicine, University of Oslo, Unipub, Oslo, no. 245, 1 b. (flere pag.)
BIBSYS 051013525, ISBN 82-8080-138-3

Publications 2004

Rossberg JI, Friis S (2004)
Patients' and staff's perceptions of the psychiatric ward environment
Psychiatr Serv, 55 (7), 798-803
DOI 10.1176/appi.ps.55.7.798, PubMed 15232020

Røssberg JI, Eiring Ø, Friis S (2004)
Work environment and job satisfaction. A psychometric evaluation of the Working Environment Scale-10
Soc Psychiatry Psychiatr Epidemiol, 39 (7), 576-80
DOI 10.1007/s00127-004-0791-z, PubMed 15243696

Publications 2003

Rossberg JI, Friis S (2003)
Staff members' emotional reactions to aggressive and suicidal behavior of inpatients
Psychiatr Serv, 54 (10), 1388-94
DOI 10.1176/appi.ps.54.10.1388, PubMed 14557526

Røssberg JI, Friis S (2003)
Do the Spontaneity and Anger and Aggression subscales of the Ward Atmosphere Scale form homogeneous dimensions? A cross-sectional study of 54 wards for psychotic patients
Acta Psychiatr Scand, 107 (2), 118-23
DOI 10.1034/j.1600-0447.2003.02082.x, PubMed 12534437

Røssberg JI, Friis S (2003)
A suggested revision of the Ward Atmosphere Scale
Acta Psychiatr Scand, 108 (5), 374-80
DOI 10.1034/j.1600-0447.2003.00191.x, PubMed 14531758

Røssberg JI, Hoffart A, Friis S (2003)
Psychiatric staff members' emotional reactions toward patients. A psychometric evaluation of an extended version of the Feeling Word Checklist (FWC-58)
Nord J Psychiatry, 57 (1), 45-53
DOI 10.1080/08039480310000257, PubMed 12745791

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