Publication list - Publika - Scientific publications from Oslo University Hospital

Publications by Steinar Lorentzen

73 publications found

Original articles

Lorentzen S (2022)
Focused group analytic psychotherapy: An integration of clinical experience and research
J Clin Psychol, 78 (8), 1613-1623
DOI 10.1002/jclp.23397, PubMed 35689824

Pedersen G, Kvarstein EH, Wilberg T, Folmo EJ, Burlingame GM, Lorentzen S (2021)
The Group Questionnaire (GQ)-Psychometric Properties Among Outpatients With Personality Disorders
Group Dyn.-Theory Res. Pract.
DOI 10.1037/gdn0000176

Lorentzen S, Strauss B, Altmann U (2018)
Process-Outcome Relationships in Short- and Long-Term Psychodynamic Group Psychotherapy: Results From a Randomized Clinical Trial
Group Dyn.-Theory Res. Pract., 22 (2), 93-107
DOI 10.1037/gdn0000084

Church C, Andreassen OA, Lorentzen S, Melle I, Aas M (2017)
Childhood Trauma and Minimization/Denial in People with and without a Severe Mental Disorder
Front Psychol, 8, 1276
DOI 10.3389/fpsyg.2017.01276, PubMed 28883800

Fjeldstad A, Hoglend P, Lorentzen S (2016)
Presence of Personality Disorder Moderates the Long-Term Effects of Short-Term and Long-Term Psychodynamic Group Therapy: A 7-Year Follow-Up of a Randomized Clinical Trial
Group Dyn.-Theory Res. Pract., 20 (4), 294-309
DOI 10.1037/gdn0000055

Fjeldstad A, Høglend P, Lorentzen S (2015)
Patterns of Change in Interpersonal Problems During and After Short-term and Long-term Psychodynamic Group Therapy: A Randomized Clinical Trial
Psychother Res, 27 (3), 350-361
DOI 10.1080/10503307.2015.1102357, PubMed 26514065

Lorentzen S, Wilberg T, Martinsen EW (2015)
Group Psychotherapy in Norway
Int J Group Psychother, 65 (4), 543-51
DOI 10.1521/ijgp.2015.65.4.543, PubMed 26401797

Suszek H, Holas P, Wyrzykowski T, Lorentzen S, Kokoszka A (2015)
Short-term intensive psychodynamic group therapy versus cognitive-behavioral group therapy in day treatment of anxiety disorders and comorbid depressive or personality disorders: study protocol for a randomized controlled trial
Trials, 16, 319
DOI 10.1186/s13063-015-0827-6, PubMed 26220089

Lorentzen S, Fjeldstad A, Ruud T, Marble A, Klungsøyr O, Ulberg R, Høglend PA (2015)
The Effectiveness of Short- and Long-Term Psychodynamic Group Psychotherapy on Self-Concept: Three Years Follow-Up of a Randomized Clinical Trial
Int J Group Psychother, 65 (3), 362-85
DOI 10.1521/ijgp.2015.65.3.362, PubMed 26076204

Lorentzen S, Fjeldstad A, Ruud T, Marble A, Klungsoyr O, Ulberg R, Hoglend PA (2015)
The Effectiveness of Short- and Long-Term Psychodynamic Group Psychotherapy on Self-Concept: Three Years Follow-Up of a Randomized Clinical Trial
Int. J. Group Psychother., 65 (3), 363-385

Lorentzen S, Ruud T, Fjeldstad A, Høglend PA (2014)
Personality disorder moderates outcome in short- and long-term group analytic psychotherapy: A randomized clinical trial
Br J Clin Psychol, 54 (2), 129-46
DOI 10.1111/bjc.12065, PubMed 25178520

Steen NE, Methlie P, Lorentzen S, Dieset I, Aas M, Nerhus M, Haram M, Agartz I, Melle I, Berg JP, Andreassen OA (2014)
Altered systemic cortisol metabolism in bipolar disorder and schizophrenia spectrum disorders
J Psychiatr Res, 52, 57-62
DOI 10.1016/j.jpsychires.2014.01.017, PubMed 24534618

Knutzen M, Bjørkly S, Eidhammer G, Lorentzen S, Mjøsund NH, Opjordsmoen S, Sandvik L, Friis S (2013)
Characteristics of patients frequently subjected to pharmacological and mechanical restraint--a register study in three Norwegian acute psychiatric wards
Psychiatry Res, 215 (1), 127-33
DOI 10.1016/j.psychres.2013.10.024, PubMed 24230996

Mork E, Walby FA, Harkavy-Friedman JM, Barrett EA, Steen NE, Lorentzen S, Andreassen OA, Melle I, Mehlum L (2013)
Clinical characteristics in schizophrenia patients with or without suicide attempts and non-suicidal self-harm--a cross-sectional study
BMC Psychiatry, 13, 255
DOI 10.1186/1471-244X-13-255, PubMed 24106884

Etain B, Aas M, Andreassen OA, Lorentzen S, Dieset I, Gard S, Kahn JP, Bellivier F, Leboyer M, Melle I, Henry C (2013)
Childhood trauma is associated with severe clinical characteristics of bipolar disorders
J Clin Psychiatry, 74 (10), 991-8
DOI 10.4088/JCP.13m08353, PubMed 24229750

Lorentzen S, Ruud T, Fjeldstad A, Høglend P (2013)
Comparison of short- and long-term dynamic group psychotherapy: randomised clinical trial
Br J Psychiatry, 203 (3), 280-7
DOI 10.1192/bjp.bp.112.113688, PubMed 24029539

Aas M, Haukvik UK, Djurovic S, Bergmann Ø, Athanasiu L, Tesli MS, Hellvin T, Steen NE, Agartz I, Lorentzen S, Sundet K, Andreassen OA, Melle I (2013)
BDNF val66met modulates the association between childhood trauma, cognitive and brain abnormalities in psychoses
Prog Neuropsychopharmacol Biol Psychiatry, 46, 181-8
DOI 10.1016/j.pnpbp.2013.07.008, PubMed 23876786

Bakali JV, Wilberg T, Klungsoyr O, Lorentzen S (2013)
Development of Group Climate in Short- and Long-Term Psychodynamic Group Psychotherapy
Int. J. Group Psychother., 63 (3), 367-393

Lorentzen S, Ruud T (2013)
Group therapy in public mental health services: approaches, patients and group therapists
J Psychiatr Ment Health Nurs, 21 (3), 219-25
DOI 10.1111/jpm.12072, PubMed 23581992

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

Hope S, Ueland T, Steen NE, Dieset I, Lorentzen S, Berg AO, Agartz I, Aukrust P, Andreassen OA (2013)
Interleukin 1 receptor antagonist and soluble tumor necrosis factor receptor 1 are associated with general severity and psychotic symptoms in schizophrenia and bipolar disorder
Schizophr Res, 145 (1-3), 36-42
DOI 10.1016/j.schres.2012.12.023, PubMed 23403415

Knutzen M, Bjørkly S, Eidhammer G, Lorentzen S, Helen Mjøsund N, Opjordsmoen S, Sandvik L, Friis S (2012)
Mechanical and pharmacological restraints in acute psychiatric wards--why and how are they used?
Psychiatry Res, 209 (1), 91-7
DOI 10.1016/j.psychres.2012.11.017, PubMed 23219102

Peleikis DE, Varga M, Sundet K, Lorentzen S, Agartz I, Andreassen OA (2012)
Schizophrenia patients with and without post-traumatic stress disorder (PTSD) have different mood symptom levels but same cognitive functioning
Acta Psychiatr Scand, 127 (6), 455-63
DOI 10.1111/acps.12041, PubMed 23176609

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

Aas M, Steen NE, Agartz I, Aminoff SR, Lorentzen S, Sundet K, Andreassen OA, Melle I (2012)
Is cognitive impairment following early life stress in severe mental disorders based on specific or general cognitive functioning?
Psychiatry Res, 198 (3), 495-500
DOI 10.1016/j.psychres.2011.12.045, PubMed 22472845

Lorentzen S (2012)
[Psychotherapy training in specialist education]
Tidsskr Nor Laegeforen, 132 (4), 394-5
DOI 10.4045/tidsskr.11.1309, PubMed 22353827

Hersoug AG, Høglend P, Gabbard GO, Lorentzen S (2012)
The combined predictive effect of patient characteristics and alliance on long-term dynamic and interpersonal functioning after dynamic psychotherapy
Clin Psychol Psychother, 20 (4), 297-307
DOI 10.1002/cpp.1770, PubMed 22298434

Mork E, Mehlum L, Barrett EA, Agartz I, Harkavy-Friedman JM, Lorentzen S, Melle I, Andreassen OA, Walby FA (2012)
Self-harm in patients with schizophrenia spectrum disorders
Arch Suicide Res, 16 (2), 111-23
DOI 10.1080/13811118.2012.667328, PubMed 22551042

Aas M, Djurovic S, Athanasiu L, Steen NE, Agartz I, Lorentzen S, Sundet K, Andreassen OA, Melle I (2011)
Serotonin transporter gene polymorphism, childhood trauma, and cognition in patients with psychotic disorders
Schizophr Bull, 38 (1), 15-22
DOI 10.1093/schbul/sbr113, PubMed 21908796

Lorentzen S, Høglend P, Martinsen EW, Ringdal E (2011)
Practice-based evidence: patients who did not respond to group analysis
Int J Group Psychother, 61 (3), 366-95
DOI 10.1521/ijgp.2011.61.3.366, PubMed 21728705

Lorentzen S, Bakali JV, Hersoug AG, Hagtvet KA, Ruud T, Høglend P (2011)
Psychodynamic group psychotherapy: impact of group length and therapist professional characteristics on development of therapeutic alliance
Clin Psychol Psychother, 19 (5), 420-33
DOI 10.1002/cpp.758, PubMed 21626613

Knutzen M, Mjosund NH, Eidhammer G, Lorentzen S, Opjordsmoen S, Sandvik L, Friis S (2011)
Characteristics of psychiatric inpatients who experienced restraint and those who did not: a case-control study
Psychiatr Serv, 62 (5), 492-7
DOI 10.1176/ps.62.5.pss6205_0492, PubMed 21532074

Steen NE, Methlie P, Lorentzen S, Hope S, Barrett EA, Larsson S, Mork E, Almås B, Løvås K, Agartz I, Melle I, Berg JP, Andreassen OA (2011)
Increased systemic cortisol metabolism in patients with schizophrenia and bipolar disorder: a mechanism for increased stress vulnerability?
J Clin Psychiatry, 72 (11), 1515-21
DOI 10.4088/JCP.10m06068yel, PubMed 21367348

Lorentzen S, Ronnestad MH, Orlinsky D (2011)
Sources of influence on the professional development of psychologists and psychiatrists in Norway and Germany
Eur. J. Psychother. Couns., 13 (2), 141-152
DOI 10.1080/13642537.2011.570016

Bakali JV, Wilberg T, Hagtvet KA, Lorentzen S (2010)
Sources Accounting for Alliance and Cohesion at Three Stages in Group Psychotherapy: Variance Component Analyses
Group Dyn.-Theory Res. Pract., 14 (4), 368-383
DOI 10.1037/a0019170

Lorentzen S, Ruud T, Grawe RW (2010)
Group therapy in community mental health centres. A Norwegian survey
Nord. Psychol., 62 (3), 20-34
DOI 10.1027/1901-2276/a000014

Hope S, Melle I, Aukrust P, Agartz I, Lorentzen S, Steen NE, Djurovic S, Ueland T, Andreassen OA (2010)
Osteoprotegerin levels in patients with severe mental disorders
J Psychiatry Neurosci, 35 (5), 304-10
DOI 10.1503/jpn.090088, PubMed 20569643

Høglend P, Dahl HS, Hersoug AG, Lorentzen S, Perry JC (2010)
Long-term effects of transference interpretation in dynamic psychotherapy of personality disorders
Eur Psychiatry, 26 (7), 419-24
DOI 10.1016/j.eurpsy.2010.05.006, PubMed 20810254

Barrett EA, Sundet K, Simonsen C, Agartz I, Lorentzen S, Mehlum L, Mork E, Andreassen OA, Melle I (2010)
Neurocognitive functioning and suicidality in schizophrenia spectrum disorders
Compr Psychiatry, 52 (2), 156-63
DOI 10.1016/j.comppsych.2010.06.001, PubMed 21295222

Athanasiu L, Mattingsdal M, Melle I, Inderhaug E, Lien T, Agartz I, Lorentzen S, Morken G, Andreassen OA, Djurovic S (2010)
Intron 12 in NTRK3 is associated with bipolar disorder
Psychiatry Res, 185 (3), 358-62
DOI 10.1016/j.psychres.2010.05.011, PubMed 20554328

Djurovic S, Gustafsson O, Mattingsdal M, Athanasiu L, Bjella T, Tesli M, Agartz I, Lorentzen S, Melle I, Morken G, Andreassen OA (2010)
A genome-wide association study of bipolar disorder in Norwegian individuals, followed by replication in Icelandic sample
J Affect Disord, 126 (1-2), 312-6
DOI 10.1016/j.jad.2010.04.007, PubMed 20451256

Larsson S, Lorentzen S, Mork E, Barrett EA, Steen NE, Lagerberg TV, Berg AO, Aminoff SR, Agartz I, Melle I, Andreassen OA (2009)
Age at onset of bipolar disorder in a Norwegian catchment area sample
J Affect Disord, 124 (1-2), 174-7
DOI 10.1016/j.jad.2009.10.031, PubMed 19931918

Hope S, Melle I, Aukrust P, Steen NE, Birkenaes AB, Lorentzen S, Agartz I, Ueland T, Andreassen OA (2009)
Similar immune profile in bipolar disorder and schizophrenia: selective increase in soluble tumor necrosis factor receptor I and von Willebrand factor
Bipolar Disord, 11 (7), 726-34
DOI 10.1111/j.1399-5618.2009.00757.x, PubMed 19839997

Bakali JV, Baldwin SA, Lorentzen S (2009)
Modeling group process constructs at three stages in group psychotherapy
Psychother Res, 19 (3), 332-43
DOI 10.1080/10503300902894430, PubMed 20183394

Viken K, Lonning V, Røstad AL, Korsmo M, Lorentzen S (2008)
[The ward atmosphere and satisfaction in four psychogeriatric wards]
Tidsskr Nor Laegeforen, 128 (3), 310-2
PubMed 18264156

Lorentzen S, Høglend P (2005)
Predictors of change after long-term analytic group psychotherapy
J Clin Psychol, 61 (12), 1541-53
DOI 10.1002/jclp.20207, PubMed 16193478

Lorentzen S, Sexton HC, Høglend P (2004)
Therapeutic alliance, cohesion and outcome in a long-term analytic group. A preliminary study
Nord J Psychiatry, 58 (1), 33-40
DOI 10.1080/08039480310000770, PubMed 14985152

Lorentzen S, Høglend P (2004)
Predictors of change during long-term analytic group psychotherapy
Psychother Psychosom, 73 (1), 25-35
DOI 10.1159/000074437, PubMed 14665793

Lorentzen S, Bøgwald KP, Høglend P (2002)
Change during and after long-term analytic group psychotherapy
Int J Group Psychother, 52 (3), 419-29
DOI 10.1521/ijgp.52.3.419.45511, PubMed 12082680

Lorentzen S, Maar V, Sørlie T (2002)
Block-training in group psychotherapy in the Baltic States: Experiences from three years of training
Nord J Psychiatry, 56 (2), 145-50
DOI 10.1080/080394802753617971, PubMed 11960568

Melle I, Friis S, Hauff E, Island TK, Lorentzen S, Vaglum P (1996)
The importance of ward atmosphere in inpatient treatment of schizophrenia on short-term units
Psychiatr Serv, 47 (7), 721-6
DOI 10.1176/ps.47.7.721, PubMed 8807685

Lorentzen S, Herlofsen P, Karterud S, Ruud T (1995)
Block training in group analysis: the Norwegian program
Int J Group Psychother, 45 (1), 73-89
DOI 10.1080/00207284.1995.11491269, PubMed 7890454

LORENTZEN S, ISLAND TK, FRIIS S, HAUFF E, VAGLUM P (1995)
THE ULLEVAL ACUTE-WARD FOLLOW-UP-STUDY - REFLECTIONS ON THE TREATMENT OF PSYCHOTIC-PATIENTS WHO COMMITTED SUICIDE
Nord. J. Psychiatr., 49 (1), 5-10
DOI 10.3109/08039489509011877

Josefsen K, Nielsen H, Lorentzen S, Damsbo P, Buschard K (1994)
Circulating monocytes are activated in newly diagnosed type 1 diabetes mellitus patients
Clin Exp Immunol, 98 (3), 489-93
DOI 10.1111/j.1365-2249.1994.tb05517.x, PubMed 7994912

LORENTZEN S (1994)
DEMOCRACY THROUGH PARTICIPATION - A NORWEGIAN MODEL FOR CITIZENSHIP EDUCATION
EUR EDUC R, 32, 91-100

Friis S, Hauff E, Island TK, Lorentzen S, Melle I, Vaglum P (1991)
The Ullevål acute ward follow-up study: a personal 7-year follow-up of patients with functional psychosis admitted to the acute ward of a catchment area
Psychopathology, 24 (5), 316-27
DOI 10.1159/000284732, PubMed 1784708

HALD M, DANIELSEN TK, LORENTZEN S (1989)
LATE PLEISTOCENE-HOLOCENE BENTHIC FORAMINIFERAL DISTRIBUTION IN THE SOUTHWESTERN BARENTS SEA - PALEOENVIRONMENTAL IMPLICATIONS
Boreas, 18 (4), 367-388
DOI 10.1111/j.1502-3885.1989.tb00413.x

Lorentzen S (1981)
Problems of establishing a therapeutic community ward within a mental hospital
J Oslo City Hosp, 31 (4-6), 47-9
PubMed 7320786

Lorentzen S (1981)
Why do psychiatric patients return? A pilot study of patients re-admitted to a psychiatric ward in a general hospital
J Oslo City Hosp, 31 (4-6), 63-6
PubMed 7320790

Lorentzen S (1979)
[Intracranial expansive lesions in patients at a psychiatric admitting department]
Tidsskr Nor Laegeforen, 99 (8), 413-5
PubMed 432866

Review articles

Bakali JV, Wilberg T, Klungsøyr O, Lorentzen S (2013)
Development of group climate in short- and long-term psychodynamic group psychotherapy
Int J Group Psychother, 63 (3), 366-93
DOI 10.1521/ijgp.2013.63.3.366, PubMed 23734920

Steen NE, Lorentzen S, Barrett EA, Lagerberg TV, Hope S, Larsson S, Berg AO, Agartz I, Melle I, Berg JP, Andreassen OA (2011)
Sex-specific cortisol levels in bipolar disorder and schizophrenia during mental challenge--relationship to clinical characteristics and medication
Prog Neuropsychopharmacol Biol Psychiatry, 35 (4), 1100-7
DOI 10.1016/j.pnpbp.2011.03.008, PubMed 21420462

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

Lorentzen S (2003)
Long-term analytic group psychotherapy with outpatients. Evaluation of process and change
Nord. J. Psychiatr., 57 (6), 473-474
DOI 10.1080/08039480310002822