Jan Ivar Røssberg
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Author network for Jan Ivar Røssberg by COREMINE medical


Publications 2017

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 (in press)
PubMed 28701275

Røssberg JI (2017)
[No title available]
Tidsskr Nor Laegeforen, 137 (20)
PubMed 29094577

Røssberg JI, Andreassen OA, Ilner SO (2017)
[No title available]
Tidsskr Nor Laegeforen, 137 (9), 594-595
PubMed 28468447

Røssberg JI, Andreassen OA, Ilner SO (2017)
[No title available]
Tidsskr Nor Laegeforen, 137 (6), 426-427
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
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
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
PubMed 27582238

Haahr UH, Larsen TK, Simonsen E, Rund BR, Joa I, Rossberg JI, Johannessen JO, Langeveld J, Evensen J, Trauelsen AM, Vaglum P, Opjordsmoen S, Hegelstad WT, 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 (in press)
PubMed 26800653

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
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
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
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
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
PubMed 26101305

Østefjells T, Melle I, Hagen R, Romm KL, SÜnmez 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
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
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
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
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
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
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
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
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

SÜnmez 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
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
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
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
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
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
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
PubMed 23522391

SÜnmez 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
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
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
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
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
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
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
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
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
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
PubMed 22250962

Langeveld J, Andreassen OA, Auestad B, FÌrden 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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
PubMed 20722632

Steen NE, Tesli M, Kähler AK, Methlie P, Hope S, Barrett EA, Larsson S, Mork E, Løvüs 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
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
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
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
PubMed 18786905

Publications 2007

Faerden A, NesvĂĽg 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
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
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
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
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
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
PubMed 14557526

Røssberg JI, Friis S (2003)
A suggested revision of the Ward Atmosphere Scale
Acta Psychiatr Scand, 108 (5), 374-80
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
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
PubMed 12745791