Johannes Hendrik Langeveld | University of Stavanger

Contact

Email: johannes.langevel@uis.no

Department

Faculty of Health Sciences

Department of Public Health

Publications

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Vitenskapelige publikasjoner
- Langeveld, Johannes Hendrik; Hatløy, Kristin; Hegelstad, Wenche; Johannessen, Jan Olav; Joa, Inge
  
  (2024)
  The TIPS family psychoeducational group work approach in first episode psychosis and related disorders: 25 years of experiences.
  Early Intervention in Psychiatry.
  
  ISSN 1751-7885.
  
  DOI: 10.1111/eip.13591
- Bjørnestad, Jone Ravndal; Tjora, Tore; Langeveld, Johannes Hendrik; Joa, Inge; Johannessen, Jan Olav; Friedman‐Yakoobian, Michelle; Hegelstad, Wenche
  
  (2022)
  Reduced Expression of Emotion: A Red Flag Signalling Conversion to Psychosis in Clinical High Risk for Psychosis (CHR-P) Populations.
  Psychiatry.
  
  ISSN 0033-2747.
  
  DOI: 10.1080/00332747.2021.2014383
- Aase, Ingvild; Langeveld, Johannes Hendrik; Joa, Inge; Johannessen, Jan Olav; Dalen, Ingvild; Hegelstad, Wenche
  
  (2022)
  Associations between symptom and neurocognitive dimensions in clinical high risk for psychosis.
  Schizophrenia Research: Cognition.
  
  ISSN 2215-0013.
  
  Volum 29.
  
  DOI: 10.1016/j.scog.2022.100260
- Joa, Inge; Bjørnestad, Jone Ravndal; Johannessen, Jan Olav; Langeveld, Johannes Hendrik; Stain, Helen J.; Weibell, Melissa Anne Elin Authen; Hegelstad, Wenche
  
  (2021)
  Early detection of ultra high risk for psychosis in a Norwegian catchment area: The two year follow-up of the Prevention of Psychosis study.
  Frontiers in Psychiatry.
  
  ISSN 1664-0640.
  
  Volum 12.
  
  DOI: 10.3389/fpsyt.2021.573905
- Israel, Pravin; Langeveld, Johannes Hendrik
  
  (2021)
  Psychometric properties of the Inventory of Interpersonal Problems (IIP-C) used with a clinical sample of adolescents: a preliminary study.
  Scandinavian Journal of Child and Adolescent Psychiatry and Psychology.
  
  ISSN 2245-8875.
  
  Volum 9.
  
  s.87-95.
  
  DOI: 10.21307/sjcapp-2021-010
- Bjørnestad, Jone Ravndal; Tjora, Tore; Langeveld, Johannes Hendrik; Stain, Helen J.; Joa, Inge; Johannessen, Jan Olav; Friedman‐Yakoobian, Michelle; Hegelstad, Wenche ten Velden
  
  (2021)
  Exploring specific predictors of psychosis onset over a 2‐year period: A decision‐tree model.
  Early Intervention in Psychiatry.
  
  ISSN 1751-7885.
  
  DOI: 10.1111/eip.13175
- Aase, Ingvild; Langeveld, Johannes Hendrik; Johannessen, Jan Olav; Joa, Inge; Dalen, Ingvild; Hegelstad, Wenche
  
  (2021)
  Cognitive predictors of longitudinal positive symptom course in clinical high risk for psychosis.
  Schizophrenia Research: Cognition.
  
  ISSN 2215-0013.
  
  Volum 26.
  
  DOI: 10.1016/j.scog.2021.100210
- Haavik, Linn; Joa, Inge; Hatløy, Kristin; Stain, Helen J.; Langeveld, Johannes H.
  
  (2019)
  Help seeking for mental health problems in an adolescent population: the effect of gender.
  Journal of Mental Health.
  
  ISSN 0963-8237.
  
  Volum 28.
  
  Hefte 5.
  
  s.467-474.
  
  DOI: 10.1080/09638237.2017.1340630
- Hegelstad, Wenche; Joa, Inge; Heitmann, Lena; Johannessen, Jan Olav; Langeveld, Johannes H.
  
  (2019)
  Job- and schoolprescription: A local adaption to individual placement av support for first episode psychosis.
  Early Intervention in Psychiatry.
  
  ISSN 1751-7885.
  
  Volum 13.
  
  Hefte 4.
  
  s.859-866.
  
  DOI: 10.1111/eip.12686
- Gardsjord, Erlend Strand; Romm, Kristin Lie; Røssberg, Jan Ivar; Friis, Svein; Barder, Helene; Evensen, Julie Horgen; Haahr, Ulrik; Hegelstad, Wenche; Joa, Inge; Johannessen, Jan Olav; Langeveld, Johannes H.; Larsen, Tor Ketil; Ilner, Stein E. Opjordsmoen; Rund, Bjørn Rishovd; Simonsen, Erik; Vaglum, Per Jørgen Wiggen; Melle, Ingrid
  
  (2018)
  Depression and functioning are important to subjective quality of life after a first episode psychosis.
  Comprehensive Psychiatry.
  
  ISSN 0010-440X.
  
  Volum 86.
  
  s.107-114.
  
  DOI: 10.1016/j.comppsych.2018.07.014
- Bjørnestad, Jone Ravndal; Davidson, Larry; Joa, Inge; Larsen, Tor Ketil; Hegelstad, Wenche; Langeveld, Johannes H.; Veseth, Marius; Melle, Ingrid; Johannessen, Jan Olav; Brønnick, Kolbjørn Selvåg
  
  (2017)
  Antipsychotic treatment: experiences of fully recovered service users.
  Journal of Mental Health.
  
  ISSN 0963-8237.
  
  Volum 26.
  
  Hefte 3.
  
  s.264-270.
  
  DOI: 10.1080/09638237.2017.1294735
- Joa, Inge; Hustoft, Kjetil; Anda-Ågotnes, Liss Gøril; Brønnick, Kolbjørn Selvåg; Nielssen, Olav; Johannessen, Jan Olav; Langeveld, Johannes H.
  
  (2017)
  Public attitudes towards involuntary admission and treatment by mental health services in Norway.
  International Journal of Law and Psychiatry.
  
  ISSN 0160-2527.
  
  Volum 55.
  
  s.1-7.
  
  DOI: 10.1016/j.ijlp.2017.09.002
- Langeveld, Johannes H.; Bjørkly, Stål; Evensen, Julie Horgen; Joa, Inge; Johannessen, Jan Olav; Larsen, Tor Ketil; Melle, Ingrid; Ilner, Stein E. Opjordsmoen; Røssberg, Jan Ivar; Rund, Bjørn Rishovd; Simonsen, Erik; Vaglum, Per Jørgen Wiggen; Hegelstad, Wenche; McGlashan, Tom; Friis, Svein
  
  (2017)
  A 10-year follow-up study of violent victimization in first episode psychosis : risk and protective factors.
  Psychiatry Research.
  
  ISSN 0165-1781.
  
  Volum 259.
  
  Hefte January.
  
  s.545-549.
  
  DOI: 10.1016/j.psychres.2017.11.013
- Gardsjord, Erlend Strand; Romm, Kristin Lie; Røssberg, Jan Ivar; Friis, Svein; Barder, Helene; Evensen, Julie Horgen; Haahr, Ulrik; Hegelstad, Wenche; Joa, Inge; Johannessen, Jan Olav; Langeveld, Johannes H.; Larsen, Tor Ketil; Ilner, Stein E. Opjordsmoen; Rund, Bjørn Rishovd; Simonsen, Erik; Vaglum, Per Jørgen Wiggen; McGlashan, Thomas; Melle, Ingrid
  
  (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.
  Schizophrenia Research.
  
  ISSN 0920-9964.
  
  Volum 193.
  
  s.364-369.
  
  DOI: 10.1016/j.schres.2017.07.006
- Melle, Ingrid; Johannessen, Jan Olav; Haahr, Ulrik H.; Hegelstad, Wenche; Joa, Inge; Langeveld, Johannes H.; Larsen, Tor Ketil; Ilner, Stein E. Opjordsmoen; Qin, Ping; Røssberg, Jan Ivar; Rund, Bjørn Rishovd; Simonsen, Erik; Vaglum, Per Jørgen Wiggen; McGlashan, Thomas H.; Friis, Svein
  
  (2017)
  Causes and predictors of premature death in first-episode schizophrenia spectrum disorders.
  World Psychiatry.
  
  ISSN 1723-8617.
  
  Volum 16.
  
  Hefte 2.
  
  s.217-218.
  
  DOI: 10.1002/wps.20431
- Sønmez, Nasrettin; Røssberg, Jan Ivar; Evensen, Julie Horgen; Barder, Helene; Haahr, Ulrik; Hegelstad, Wenche; Joa, Inge; Johannessen, Jan Olav; Langeveld, Johannes H.; Larsen, Tor Ketil; Melle, Ingrid; Ilner, Stein E. Opjordsmoen; Rund, Bjørn Rishovd; Simonsen, Erik; Vaglum, Per Jørgen Wiggen; McGlashan, Thomas; Friis, Svein
  
  (2016)
  Depressive symptoms in first-episode psychosis: A 10-year follow-up study.
  Early Intervention in Psychiatry.
  
  ISSN 1751-7885.
  
  Volum 10.
  
  Hefte 3.
  
  s.227-233.
  
  DOI: 10.1111/eip.12163
- Rund, Bjørn Rishovd; Barder, Helene; Evensen, Julie Horgen; Haahr, Ulrik; Hegelstad, Wenche; Joa, Inge; Johannessen, Jan Olav; Langeveld, Johannes H.; Larsen, Tor Ketil; Melle, Ingrid; Ilner, Stein E. Opjordsmoen; Røssberg, Jan Ivar; Simonsen, Erik; Sundet, Kjetil Søren; Vaglum, Per Jørgen Wiggen; McGlashan, Thomas; Friis, Svein
  
  (2016)
  Neurocognition and Duration of Psychosis: A 10-year Follow-up of First-Episode Patients.
  Schizophrenia Bulletin.
  
  ISSN 0586-7614.
  
  Volum 42.
  
  Hefte 1.
  
  s.87-95.
  
  DOI: 10.1093/schbul/sbv083
- Friis, Svein; Melle, Ingrid; Johannessen, Jan Olav; Røssberg, Jan Ivar; Barder, Helene; Evensen, Julie Horgen; Haahr, Ulrik; Hegelstad, Wenche; Joa, Inge; Langeveld, Johannes H.; Larsen, Tor Ketil; Ilner, Stein E. Opjordsmoen; Rund, Bjørn Rishovd; Simonsen, Erik; Vaglum, Per Jørgen Wiggen; McGlashan, Thomas H.
  
  (2016)
  Early Predictors of Ten-Year Course in First-Episode Psychosis..
  Psychiatric Services.
  
  ISSN 1075-2730.
  
  Volum 67.
  
  Hefte 4.
  
  s.438-443.
  
  DOI: 10.1176/appi.ps.201400558
- Solesvik, Martine; Joa, Inge; Larsen, Tor Ketil; Langeveld, Johannes H.; Johannessen, Jan Olav; Bjørnestad, Jone Ravndal; Anda-Ågotnes, Liss Gøril; Gisselgård, Jens; Hegelstad, Wenche; Brønnick, Kolbjørn Selvåg
  
  (2016)
  Visual Hallucinations in First-Episode Psychosis: Association with Childhood Trauma.
  PLOS ONE.
  
  ISSN 1932-6203.
  
  DOI: 10.1371/journal.pone.0153458
- Gardsjord, Erlend Strand; Romm, Kristin Lie; Friis, Svein; Barder, Helene; Evensen, Julie Horgen; Haahr, Ulrik; Hegelstad, Wenche; Joa, Inge; Johannessen, Jan Olav; Langeveld, Johannes H.; Larsen, Tor Ketil; Ilner, Stein E. Opjordsmoen; Rund, Bjørn Rishovd; Simonsen, Erik; Vaglum, Per Jørgen Wiggen; McGlashan, Thomas; Melle, Ingrid; Røssberg, Jan Ivar
  
  (2016)
  Subjective quality of life in first-episode psychosis. A ten year follow-up study.
  Schizophrenia Research.
  
  ISSN 0920-9964.
  
  Volum 172.
  
  Hefte 1-3.
  
  s.23-28.
  
  DOI: 10.1016/j.schres.2016.02.034
- Langeveld, Johannes H.; Hatløy, Kristin; Johannessen, Jan Olav; Joa, Inge
  
  (2016)
  
  Psykoser. I: Psykisk helse i skolen.
  
  Universitetsforlaget.
  
  ISBN 9788215026015.
  
  s.237-256.
- Bjørnestad, Jone Ravndal; Joa, Inge; Larsen, Tor Ketil; Langeveld, Johannes H.; Davidson, Larry; Hegelstad, Wenche; Anda-Ågotnes, Liss Gøril; Veseth, Marius; Melle, Ingrid; Johannessen, Jan Olav; Brønnick, Kolbjørn Selvåg
  
  (2016)
  "Everyone Needs a Friend Sometimes" - social predictors of long-term remission in first episode psychosis.
  Frontiers in Psychology.
  
  ISSN 1664-1078.
  
  Volum 7.
  
  DOI: 10.3389/fpsyg.2016.01491
- Bjørnestad, Jone Ravndal; Brønnick, Kolbjørn Selvåg; Davidson, Larry; Hegelstad, Wenche; Joa, Inge; Kandal, Øyvind; Larsen, Tor Ketil; Langeveld, Johannes H.; Veseth, Marius; Melle, Ingrid; Johannessen, Jan Olav
  
  (2016)
  The central role of self-agency in clinical recovery from first episode psychosis.
  Psychosis.
  
  ISSN 1752-2439.
  
  Volum 9.
  
  Hefte 2.
  
  s.140-148.
  
  DOI: 10.1080/17522439.2016.1198828
- Hegelstad, Wenche; Brønnick, Kolbjørn Selvåg; Barder, Helene; Evensen, Julie Horgen; Haahr, Ulrik; Joa, Inge; Johannessen, Jan Olav; Langeveld, Johannes H.; Larsen, Tor Ketil; Melle, Ingrid; Ilner, Stein E. Opjordsmoen; Rund, Bjørn Rishovd; Røssberg, Jan Ivar; Simonsen, Erik; Vaglum, Per Jørgen Wiggen; McGlashan, Thomas; Friis, Svein
  
  (2016)
  Preventing poor vocational functioning in psychosis through early intervention.
  Psychiatric Services.
  
  ISSN 1075-2730.
  
  Volum 68.
  
  Hefte 1.
  
  s.100-103.
  
  DOI: 10.1176/appi.ps.201500451
- Haahr, Ulrik Helt; Larsen, Tor Ketil; Simonsen, Erik; Rund, Bjørn Rishovd; Joa, Inge; Røssberg, Jan Ivar; Johannessen, Jan Olav; Langeveld, Johannes H.; Evensen, Julie Horgen; Trauelsen, Anne Marie; Vaglum, Per Jørgen Wiggen; Ilner, Stein E. Opjordsmoen; Hegelstad, Wenche; Friis, Svein; McGlashan, Thomas; Melle, Ingrid
  
  (2016)
  Relation between premorbid adjustment, duration of untreated psychosis and close interpersonal trauma in ﬁrst-episode psychosis .
  Early Intervention in Psychiatry.
  
  ISSN 1751-7885.
  
  Volum 12.
  
  Hefte 3.
  
  s.316-323.
  
  DOI: 10.1111/eip.12315
- Barder, Helene; Sundet, Kjetil Søren; Rund, Bjørn Rishovd; Evensen, Julie Horgen; Haahr, Ulrik; Hegelstad, Wenche; Joa, Inge; Johannessen, Jan Olav; Langeveld, Johannes H.; Larsen, Tor Ketil; Melle, Ingrid; Ilner, Stein E. Opjordsmoen; Røssberg, Jan Ivar; Simonsen, Erik; Vaglum, Per Jørgen Wiggen; McGlashan, Thomas; Friis, Svein
  
  (2015)
  Ten year course of IQ in first-episode psychosis: relationship between duration of psychsis and long-term intellectual trajectories.
  Psychiatry Research.
  
  ISSN 0165-1781.
  
  Volum 225.
  
  Hefte 3.
  
  s.515-521.
  
  DOI: 10.1016/j.psychres.2014.11.054
- Stain, Helen J.; Brønnick, Kolbjørn S; Hegelstad, Wenche; Joa, Inge; Johannessen, Jan Olav; Langeveld, Johannes H.; Mawn, Lauren; Larsen, Tor Ketil
  
  (2014)
  Impact of Interpersonal Trauma on the Social Functioning of Adults With First-Episode Psychosis.
  Schizophrenia Bulletin.
  
  ISSN 0586-7614.
  
  Volum 40.
  
  Hefte 6.
  
  s.1491-1498.
  
  DOI: 10.1093/schbul/sbt166
- Hegelstad, Wenche; Joa, Inge; Barder, Helene; Evensen, Julie Horgen; Haahr, Ulrik; Johannessen, Jan Olav; Langeveld, Johannes H.; Melle, Ingrid; Ilner, Stein E. Opjordsmoen; Røssberg, Jan Ivar; Rund, Bjørn Rishovd; Simonsen, Erik; Vaglum, Per Jørgen Wiggen; McGlashan, Thomas; Friis, Svein; Larsen, Tor Ketil
  
  (2014)
  Variation in duration of untreated psychosis in an 18-year perspective.
  Early Intervention in Psychiatry.
  
  ISSN 1751-7885.
  
  Volum 8.
  
  Hefte 4.
  
  s.323-331.
  
  DOI: 10.1111/eip.12057
- Langeveld, Johannes H.; Bjørkly, Stål; Auestad, Bjørn Henrik; Barder, Helene; Evensen, Julie Horgen; Hegelstad, Wenche; Joa, Inge; Johannessen, Jan Olav; Larsen, Tor Ketil; Melle, Ingrid; Ilner, Stein E. Opjordsmoen; Røssberg, Jan Ivar; Rund, Bjørn Rishovd; Simonsen, Erik; Vaglum, Per Jørgen Wiggen; McGlashan, Thomas; Friis, Svein
  
  (2014)
  Treatment and violent behavior in persons with first episode psychosis during a 10-year prospective follow-up study.
  Schizophrenia Research.
  
  ISSN 0920-9964.
  
  Volum 156.
  
  Hefte 2-3.
  
  s.272-276.
  
  DOI: 10.1016/j.schres.2014.04.010
- Gisselgård, Jens; Anda, Liss Gøril; Brønnick, Kolbjørn S; Langeveld, Johannes H.; Hegelstad, Wenche; Joa, Inge; Johannessen, Jan Olav; Larsen, Tor Ketil
  
  (2014)
  Verbal working memory deficits predict levels of auditory hallucination in first-episode psychosis.
  Schizophrenia Research.
  
  ISSN 0920-9964.
  
  Volum 153.
  
  Hefte 1-3.
  
  s.38-41.
  
  DOI: 10.1016/j.schres.2013.12.018
- Langeveld, Johannes H.; Andreassen, Ole Andreas; Auestad, Bjørn Henrik; Færden, Ann; Hauge, Lars Johan; Joa, Inge; Johannessen, Jan Olav; Melle, Ingrid; Rund, Bjørn Rishovd; Røssberg, Jan Ivar; Simonsen, Erik; Vaglum, Per Jørgen Wiggen; Larsen, Tor Ketil
  
  (2013)
  Is there an optimal factor structure of the Positive and Negative Syndrome Scale in patients with first-episode psychosis?.
  Scandinavian Journal of Psychology.
  
  ISSN 0036-5564.
  
  Volum 54.
  
  Hefte 2.
  
  s.160-165.
  
  DOI: 10.1111/sjop.12017
- Hegelstad, Wenche; Haahr, Ulrik; Larsen, Tor Ketil; Auestad, Bjørn Henrik; Barder, Helene; Evensen, Julie Horgen; Joa, Inge; Johannessen, Jan Olav; Langeveld, Johannes H.; Melle, Ingrid; Ilner, Stein E. Opjordsmoen; Røssberg, Jan Ivar; Rund, Bjørn Rishovd; Simonsen, Erik; Vaglum, Per Jørgen Wiggen; McGlashan, Thomas; Friis, Svein
  
  (2013)
  Early detection, early symptom progression and symptomatic remission after ten years in a first episode of psychosis study.
  Schizophrenia Research.
  
  ISSN 0920-9964.
  
  Volum 143.
  
  Hefte 2-3.
  
  s.337-343.
  
  DOI: 10.1016/j.schres.2012.10.027
- Barder, Helene; Sundet, Kjetil Søren; Rund, Bjørn Rishovd; Evensen, Julie Horgen; Haahr, Ulrik; Hegelstad, Wenche; Joa, Inge; Johannessen, Jan Olav; Langeveld, Johannes H.; Larsen, Tor Ketil; Melle, Ingrid; Ilner, Stein E. Opjordsmoen; Røssberg, Jan Ivar; Simonsen, Erik; Vaglum, Per Jørgen Wiggen; McGlashan, Tom; Friis, Svein
  
  (2013)
  Neurocognitive development in first episode psychosis 5 years follow-up: associations between illness severity and cognitive course.
  Schizophrenia Research.
  
  ISSN 0920-9964.
  
  Volum 149.
  
  Hefte 1-3.
  
  s.63-69.
  
  DOI: 10.1016/j.schres.2013.06.016
- Barder, Helene; Sundet, Kjetil Søren; Rund, Bjørn Rishovd; Evensen, Julie Horgen; Haahr, Ulrik; Hegelstad, Wenche; Joa, Inge; Johannessen, Jan Olav; Langeveld, Johannes H.; Larsen, Tor Ketil; Melle, Ingrid; Ilner, Stein E. Opjordsmoen; Røssberg, Jan Ivar; Simonsen, Erik; Vaglum, Per Jørgen Wiggen; McGlashan, Thomas; Friis, Svein
  
  (2013)
  Ten year neurocognitive trajectories in first-episode psychosis.
  Frontiers in Human Neuroscience.
  
  ISSN 1662-5161.
  
  Volum 7.
  
  DOI: 10.3389/fnhum.2013.00643
- Langeveld, Hans; Gundersen, Knut; Svartdal, Frode
  
  (2012)
  Social Competence as a Mediating Factor in Reduction of Behavioral Problems.
  Scandinavian Journal of Educational Research.
  
  ISSN 0031-3831.
  
  Volum 56.
  
  Hefte 4.
  
  s.381-399.
  
  DOI: 10.1080/00313831.2011.594614
- Hegelstad, Wenche; Larsen, Tor Kjetil; Auestad, Bjørn Henrik; Evensen, Julie Horgen; Haahr, Ulrik; Joa, Inge; Johannessen, Jan Olav; Langeveld, Johannes; Melle, Ingrid; Ilner, Stein E. Opjordsmoen; Røssberg, Jan Ivar; Rund, Bjørn Rishovd; Simonsen, Erik; Sundet, Kjetil Søren; Vaglum, Per Jørgen Wiggen; Friis, Svein; McGlashan, Thomas
  
  (2012)
  Long-Term Follow-Up of the TIPS Early Detection in Psychosis Study: Effects on 10-Year Outcome.
  American Journal of Psychiatry.
  
  ISSN 0002-953X.
  
  Volum 169.
  
  Hefte 4.
  
  s.374-380.
  
  DOI: 10.1176/appi.ajp.2011.11030459
- Stain, Helen J.; Hodne, Sigrun; Joa, Inge; Hegelstad, Wenche; Douglas, Katie M.; Langeveld, Johannes H.; Gisselgård, Jens; Johannessen, Jan Olav; Larsen, Tor Ketil
  
  (2012)
  The relationship of verbal learning and verbal fluency with written story production: Implications for social functioning in first episode psychosis.
  Schizophrenia Research.
  
  ISSN 0920-9964.
  
  Volum 138.
  
  Hefte 2-3.
  
  s.212-217.
  
  DOI: 10.1016/j.schres.2012.04.002
- Langeveld, Johannes H.; Joa, Inge; Friis, Svein; Hegelstad, Wenche; Melle, Ingrid; Johannessen, Jan Olav; Ilner, Stein E. Opjordsmoen; Simonsen, Erik; Vaglum, Per Jørgen Wiggen; Auestad, Bjørn Henrik; McGlashan, Thomas; Larsen, Tor Ketil
  
  (2012)
  A Comparison of Adolescent and Adult Onset First-Episode Non Affective Psychosis: 2-year Follow-up:.
  European Archives of Psychiatry and Clinical Neuroscience.
  
  ISSN 0940-1334.
  
  Volum 262.
  
  s.599-605.
  
  DOI: 10.1007/s00406-012-0308-9
- Evensen, Julie Horgen; Røssberg, Jan Ivar; Haahr, Ulrik; Hegelstad, Wenche; Joa, Inge; Johannessen, Jan Olav; Langeveld, Hans; Larsen, Tor Ketil; Melle, Ingrid; Ilner, Stein E. Opjordsmoen; Rund, Bjørn Rishovd; Simonsen, Erik; Sundet, Kjetil Søren; Vaglum, Per Jørgen Wiggen; Friis, Svein; McGlashan, Thomas
  
  (2011)
  Contrasting monosymptomatic patients with hallucinations and delusions in first-episode psychosis patients: a five-year longitudinal follow-up study.
  Psychopathology.
  
  ISSN 0254-4962.
  
  Volum 44.
  
  Hefte 2.
  
  s.90-97.
  
  DOI: 10.1159/000319789
- Langeveld, Hans; Joa, Inge; Larsen, Tor Ketil; Rennan, Jon Anders; Idsøe, Ella Maria Cosmovici; Johannessen, Jan Olav
  
  (2011)
  Teachers' awareness for psychotic symptoms in secondary school: the effects of an early detection programme and information campaign.
  Early Intervention in Psychiatry.
  
  ISSN 1751-7885.
  
  Volum 5.
  
  Hefte 2.
  
  s.115-121.
  
  DOI: 10.1111/j.1751-7893.2010.00248.x
- Røssberg, Jan Ivar; Johannessen, Jan Olav; Klungsøyr, Ole; Ilner, Stein E. Opjordsmoen; Evensen, Julie Horgen; Fjell, Anders Martin; Haahr, U.; Joa, Inge; Langeveld, Johannes Hendrik; Larsen, Tor Ketil; Melle, Ingrid; Rund, Bjørn Rishovd; Simonsen, E; Hegelstad, Wenche; Vaglum, Per Jørgen Wiggen; Friis, Svein; McGlashan, Thomas
  
  (2010)
  Are multi family groups appropriate for patients with first episode psychosis? A 5-year naturalistic follow-up study.
  Acta Psychiatrica Scandinavica.
  
  ISSN 0001-690X.
  
  Volum 122.
  
  Hefte 5.
  
  s.384-394.
  
  DOI: 10.1111/j.1600-0447.2010.01571.x
- Langeveld, Johannes Hendrik; Israel, Pravin; Thomsen, Per Hove
  
  (2010)
  Parental relations and referral of adolescents to Norwegian mental health clinics.
  Nordic Journal of Psychiatry.
  
  ISSN 0803-9488.
  
  Volum 64.
  
  Hefte 5.
  
  s.327-333.
  
  DOI: 10.3109/08039481003675068
- Joa, Inge; Johannessen, Jan Olav; Langeveld, H; Langeveld, Johannes Hendrik; Friis, Svein; Melle, Ingrid; Simonsen, Erik; Opjordsmoen, Stein; Simonsen, Erik; Vaglum, Per; McGlashan, Thomas H; Larsen, Tor Ketil
  
  (2009)
  Baseline profiles of adolescent vs. adult-onset first-episode psychosis in an early detection program.
  Acta Psychiatrica Scandinavica.
  
  ISSN 0001-690X.
  
  Volum 119.
  
  Hefte 6.
  
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  DOI: 10.1111/j.1600-0447.2008.01338.x
- Larsen, Tor Ketil; Joa, Inge; Langeveld, Johannes Hendrik; Johannessen, Jan Olav
  
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  Optimizing health-care systems to promote early detection of psychosis.
  Early Intervention in Psychiatry.
  
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  DOI: 10.1111/j.1751-7893.2009.00125.x
- Israel, Pravin; Thomsen, Per H.; Langeveld, Johannes Hendrik; Stormark, Kjell Morten
  
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  Child factors associated with parent involvement in usual clinical care of children and adolescents: A national register study.
  Nordic Journal of Psychiatry.
  
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  Volum 61.
  
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  DOI: 10.1080/08039480701352363
- Israel, Pravin; Thomsen, Per H.; Langeveld, Johannes Hendrik; Stormark, Kjell Morten
  
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  Parent- youth Discrepancy in the Assessment and Treatment of Youth Referred to Specialty Mental Health Clinics: Consequences to Parent Involvement.
  European Child and Adolescent Psychiatry.
  
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  DOI: 10.1007/s00787-006-0583-y
- Israel, Pravin; Thomsen, Per Hove; Langeveld, Johannes Hendrik; Stormark, Kjell Morten
  
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  Child factors associated with parent involvement in usual clinical care of children and adolescents: A national register study.
  Nordic Journal of Psychiatry.
  
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  DOI: 10.1080/08039480701352363
- Israel, Pravin; Thomsen, Per Hove; Langeveld, Johannes Hendrik; Stormark, Kjell Morten
  
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  Parent-youth discrepancy in the assessment and treatment of youth in usual clinical care setting: consequences to parent involvement.
  European Child and Adolescent Psychiatry.
  
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  Volum 16.
  
  Hefte 2.
  
  s.138-148.
  
  DOI: 10.1007/s00787-006-0583-y
- Langeveld, Johannes; Gundersen, Knut Kornelius; Svartdal, Frode
  
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  The role of cognitive distortions on the effect of Aggressive Replacement Training (ART) on adolescents; mediator or moderator?. I: Proceedings of the 5th. European Congress on Violence in Clinical Psychiatry.
- Israel, Pravin; Thomsen, Per Hove; Langeveld, Johannes Hendrik; Stormark, Kjell Morten
  
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  Parental engagement in psychotherapy with adolescents: A preliminary study.
  Nordic Journal of Psychiatry.
  
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  Volum 58.
  
  s.133-138.
  
  DOI: 10.1080/08039480410005512
- Israel, Pravin; Thomsen, Per Hove; Langeveld, Johannes Hendrik; Stormark, Kjell Morten
  
  (2004)
  
  Parental engagement in psychotherapy with adolescents: A preliminary study.
  
  Nordic Journal of Psychiatry.
  
  ISSN 0803-9488.
  
  Volum 58.
  
  s.133-138.
- Langeveld, Johannes Hendrik
  
  (2004)
  
  Blir psykiske lidelser i fengsel fanget opp av helsetjenesten?.
  
  Tidsskrift for Den norske legeforening.
  
  ISSN 0029-2001.
  
  Volum 124.
  
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Bøker og kapitler
- Fandrem, Cathrine Hatleskog; Langeveld, Johannes Hendrik
  
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  PTSD hos mødre utsatt for intim partnervold og konsekvenser for omsorgsevne: en litteraturgjennomgang.
- Sandve, Bodil; Skålvik, Andrea Bjerke; Langeveld, Johannes Hendrik; Larsen, Tor K
  
  (2009)
  
  Selvforstyrrelse som kjernemarkør for pre-psykotisk fase. Klarer SIPS (Strukturert Intervju for ProdromalSyndromer) å fange opp selvforstyrrelse?.
  
  Universitetet i Bergen.
- Hetland, Jens; Olsen, Cecilie Sunde; Langeveld, Johannes Hendrik
  
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  Prevalens av emosjonelt ustabil personlighetsforstyrrelse i relasjon til behandleres diagnostiseringspraksis og holdninger - en undersøkelse ved poliklinikker innen psykiatrisk divisjon ved et større helseforetak i Norge.
  
  Universitetet i Bergen.
- Kvål, Monica Vaaland; Langeveld, Johannes Hendrik
  
  (2008)
  
  Rehabilitering, straff og psykisk helse i fengsler - i et kvinneperspektiv.
  
  Universitetet i Bergen.
- Røv, Karin; Langeveld, Johannes Hendrik
  
  (2004)
  
  Er Psychopathy Checklist Youth-version egnet for vurdering av farlighetsgrad hos barn og unge i Norge?.
  
  Universitetet i Bergen.
- jellum, Bente; Sulejewski, Simen Hiort; Langeveld, Johannes Hendrik
  
  (2003)
  
  Er Inventory of Interpersonal Problems - Circumplex et egnet instrument for ungdom i alderen 14-18 år?.
  
  Universitetet i Bergen.
- Langeveld, Johannes Hendrik; Passchier, Jan; Koot, Hans M
  
  (1998)
  
  Quality of Life in Adolescents with Migraine and other Headaches.
  
  ISBN 90-9012007-6.
Formidling
- Johannessen, Jan Olav; Bjørnestad, Jone Ravndal; Gohar, Sherif Mostafa Mohamed Ahmed; Joa, Inge; Langeveld, Johannes Hendrik; Weibell, Melissa Anne Elin Authen; Hegelstad, Wenche ten Velden
  
  (2023)
  
  Lessons learned over 25 years: TIPS Norway- now that we found DUP what are we going to do with it?.
  
  Biennial Schizophrenia International Research Society conference;
  
  2023-05-11 - 2023-05-15.
- Hatløy, Kristin; Joa, Inge; Idsøe, Ella Maria C.; Idsøe, Thormod; Johannessen, Jan Olav; Langeveld, Johannes H.
  
  (2013)
  
  High school students’ mental health literacy and attitudes to treatment; possible effects of an Norwegian early detection campaign and a psychoeducative curriculum.
  
  Foredrag;
  
  2013-08-22 - 2013-08-25.
- Friis, Svein; Barder, Helene; Evensen, Julie Horgen; Haahr, Ulrik; Hegelstad, Wenche ten Velden; Joa, Inge; Johannessen, Jan Olav; Langeveld, Johannes; Larsen, Tor Ketil; Melle, Ingrid; Opjordsmoen, Stein; Rund, Bjørn Rishovd; Røssberg, Jan Ivar; Simonsen, Erik; Sundet, Kjetil Søren; Vaglum, Per Jørgen Wiggen; McGlashan, Thomas
  
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  The TIPS study and bias: Replies to Dr Amos.
  Australian and New Zealand journal of psychiatry (Print).
  
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  Volum 46.
  
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  s.905-907.
  
  DOI: 10.1177/0004867412451344
- Langeveld, Johannes H.; Joa, Inge; Johannessen, Jan Olav; Friis, Svein; Hegelstad, Wenche; Melle, Ingrid; Ilner, Stein E. Opjordsmoen; Larsen, Tor Ketil; Vaglum, Per Jørgen Wiggen; Auestad, Bjørn Henrik; Bjørkly, Stål; McGlashan, Tom
  
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  Characteristic of first-episode psychosis patients reporting violent/threatening behavior.
  
  Early Intervention in Psychiatry.
  
  ISSN 1751-7885.
  
  Volum 6.
  
  s.51-51.
- Hegelstad, Wenche; Larsen, Tor Ketil; Evensen, Julie Horgen; Friis, Svein; Haahr, Ulrick; Joa, Inge; Johannesen, Jan O.; Langeveld, Johannes H.; Melle, Ingrid; Opjordsmoen, Stein; Rossberg, Jan Ivar; McGlashan, Thomas
  
  (2012)
  
  Long-term follow-up of the TIPS early detection in psychosis study: effects on 10-year outcome.
  
  Early Intervention in Psychiatry.
  
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  Volum 6.
  
  s.15-15.
- Melle, Ingrid; Evensen, Julie Horgen; Haahr, U.; Hegelstad, Wenche; Joa, Inge; Johannessen, Jan Olav; Langeveld, Hans; Larsen, Tor Ketil; Ilner, Stein E. Opjordsmoen; Røssberg, Jan Ivar; Rund, Bjørn Rishovd; Simonsen, E.; Sundet, Kjetil Søren; Vaglum, Per Jørgen Wiggen; Friis, Svein; McGlashan, Thomas
  
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  Quality of life and recovery in psychotic disorders - 10 year follow-up of the tips study.
  
  Schizophrenia Bulletin.
  
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  Volum 37.
  
  s.274-274.
- McGlashan, Thomas H.; Evensen, Julie Horgen; Haahr, J.; Hegelstad, Wenche; Joa, Inge; Johannessen, Jan Olav; Langeveld, Hans; Larsen, T; Melle, Ingrid; Ilner, Stein E. Opjordsmoen; Rossberg, J.; Rund, Bjørn Rishovd; Simonsen, E.; Sundet, Kjetil Søren; Vaglum, Per Jørgen Wiggen; Friis, Svein
  
  (2011)
  
  EARLY DETECTION AND INTERVENTION (EDI) IN FIRST EPISODE PSYCHOSIS: CAN IT IN CREASE THE CHANCE FOR FULL RECOVERY? TIPS 10 YEAR FINDINGS.
  
  Schizophrenia Bulletin.
  
  ISSN 0586-7614.
  
  Volum 37.
  
  s.273-274.
- Friis, Svein; Evensen, Julie Horgen; Haahr, Ulrik; Hegelstad, Wenche; Joa, Inge; Johannessen, O; Langeveld, Hans; Larsen, TK; Melle, Ingrid; Opjordsmoen, S; Rossberg, Jan Ivar; Rund, Bjørn Rishovd; Simonsen, E; Sundet, Kjetil Søren; Vaglum, Per Jørgen Wiggen; McGlashan, Thomas
  
  (2011)
  
  Early Detection and Intervention(EDI) in first episode psychosis: Can it reduce the risk for poor outcome? Tips 10 years findings.
  
  Schizophrenia Bulletin.
  
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  Volum 37.
  
  s.98-98.
- Joa, Inge; Weibel, M.; Johannessen, Jan Olav; Hegelstad, Wenche; Langeveld, Hans; Larsen, Tor Ketil
  
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  SUBSTANCE MISUSE AND FIRST EPISODE PSYCHOSIS, A STUDY OF ASSOCIATED RISKS.
  
  Schizophrenia Bulletin.
  
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  Volum 37.
  
  s.4-4.
- Langeveld, Johannes; Gundersen, Knut Kornelius
  
  (2009)
  
  Presentasjon av forskning på ART i Norge.
  
  Nordisk ART - konferanse;
  
  2009-09-29 - 2009-09-30.
- Grini, Irene; Heitmann, Lena; Harestad, S; ten Velden, WH; Langeveld, Johannes
  
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  Job-prescript: vocational rehabilitation for people with severe mental illness in south-west Norway.
  
  Early Intervention in Psychiatry.
  
  ISSN 1751-7885.
  
  Volum 2.
  
  s.A104-A104.
- Langeveld, Johannes Hendrik
  
  (2007)
  
  Forskning på ambulant virksomhet i Barne og ungdomspsykiatrien.
  
  Selbu seminar om ambulant behandling;
  
  2007-11-01 - 2007-11-02.
- Israel, Pravin; Langeveld, Johannes Hendrik
  
  (2007)
  
  Interpersonal Problems of Adolescents: Is IIP a Suitable Instrument to Assess Their Interpersonal Problems?.
  
  annual meeting of the Society for Interpersonal Theory and Research;
  
  2007-06-18 - 2007-06-19.
- Langeveld, Johannes Hendrik
  
  (2007)
  
  The role of cognitive distortions on the effect of Aggressive Replacement Training (ART) on adolescents; mediator or moderator? Preliminary findings.
  
  5 th European Congress on Violence in Clinical Psychiatry;
  
  2007-10-24 - 2007-10-27.
- Langeveld, Johannes; Gundersen, Knut Kornelius; Svartdal, Frode
  
  (2007)
  
  The role of cognitive distortions on the effect of Aggressive Replacement Training (ART) on adolescents; mediator or moderator? Preliminary findings.
  
  5 th European Congress on Violence in Clinical Psychiatry;
  
  2007-10-25 - 2007-10-27.
- Langeveld, Johannes Hendrik
  
  (2006)
  
  Risk prediction and needs assessment among juvenlie delinquents in Norway.
  
  Offender Risk- and Need Assessment- A necessary tool in reducing recidivism?;
  
  2006-11-14 - 2006-11-16.
- Langeveld, Johannes Hendrik
  
  (2005)
  
  Prevalens og faktisk identifiseringav psykisk lidelse blant innsatte i Stavanger fengsel.
  
  Psykisk helsearbeid blant lovbrytere/ straffedømte;
  
  2005-04-24 - .
- Israel, Pravin; Thomsen, Per H.; Langeveld, Johannes Hendrik; Stormark, Kjell Morten
  
  (2002)
  
  Parental Engagement in Psychotherapy with Adolescents: A Preliminary Study.
  
  Third International Conference on Child and Adolescent Mental Health ;
  
  2002-06-11 - 2002-06-15.
- Langeveld, Johannes Hendrik
  
  (1993)
  
  Development of a Quality of Life Instrument for Young Patients with Migraine.
  
  Cephalalgia.
  
  ISSN 0333-1024.
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