Jan Ivar Røssberg

     

    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

    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

    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)
    Psykiateren som leder
    Tidsskr Nor Laegeforen, 137 (20)
    DOI 10.4045/tidsskr.17.0575, PubMed 29094577

    Røssberg JI, Andreassen OA, Ilner SO (2017)
    Re: Psykiatriens indre konflikter eksponert
    Tidsskr Nor Laegeforen, 137 (9), 594-595
    DOI 10.4045/tidsskr.17.0288, PubMed 28468447

    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

    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

    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

    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

    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

    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, 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 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)
    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, 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, 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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