Erik Simonsen

Research output

Research output per year 1985 2010 2016 2017 2018 2019 2020

• 220 Journal article
• 60 Book chapter
• 16 Review
• 14 Book
• 29 More
  • 9 Comment/debate
  • 4 Letter
  • 3 Poster
  • 3 Conference abstract in journal
  • 3 Editorial
  • 2 Report
  • 2 Paper
  • 1 Anthology
  • 1 Ph.D. thesis
  • 1 Other contribution

Research output per year

Research output per year

Search results

• 2008

  Treatment of obsessive-compulsive disorder in the context of an avoidant personality disorder

  Reich, J. & Simonsen, E., Apr 2008, In: Personality and Mental Health. 2, 2, p. 104-109 6 p.

  Research output: Contribution to journal › Journal article › Research › peer-review
• 2007

  Clinical epidemiologic first-episode psychosis: 1-Year outcome and predictors

  Simonsen, E., Friis, S., Haahr, U., Johannessen, J. O., Larsen, T. K., Melle, I., Opjordsmoen, S., Rund, B. R., Vaglum, P. & McGlashan, T., 1 Jul 2007, In: Acta Psychiatrica Scandinavica. 116, 1, p. 54-61 8 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Psychotic Disorders 100%
  • Health Care Sector 65%
  • Norway 57%
  • Denmark 56%
  • Schizophrenia 43%
  71 Citations (Scopus)

• Effects on referral patterns of reducing intensive informational campaigns about first-episode psychosis

  Joa, I., Johannessen, J. O., Auestad, B., Friis, S., Opjordsmoen, S., Simonsen, E., Vaglum, P., McGlashan, T. & Larsen, T. K., 2007, In: Early Intervention in Psychiatry. 1, 4, p. 340-5 6 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Psychotic Disorders 100%
  • Referral and Consultation 78%
  9 Citations (Scopus)

• First-episode psychosis patients recruited into treatment via early detection teams versus ordinary pathways: course, outcome and health service use during first 2 years

  Johannessen, J. O., Friis, S., Joa, I., Haahr, U., Larsen, T. K., Melle, I., Opjordsmoen, S., Rund, B. R., Simonsen, E., Vaglum, P. & McGlashan, T., 2007, In: Early Intervention in Psychiatry. 1, 1, p. 40-8 9 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Psychotic Disorders 100%
  • Health Services 93%
  • Referral and Consultation 78%
  • Therapeutics 17%
  9 Citations (Scopus)

• Multifamily group treatment in a program for patients with first-episode psychosis: experiences from the TIPS project

  Fjell, A., Bloch Thorsen, G. R., Friis, S., Johannessen, J. O., Larsen, T. K., Lie, K., Lyse, H-G., Melle, I., Simonsen, E., Smeby, N. A., Øxnevad, A. L., McFarlane, W. R., Vaglum, P. & McGlashan, T., 2007, In: Psychiatric Services. 58, 2, p. 171-3 3 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Psychotic Disorders 100%
  • Therapeutics 17%
  • Norway 16%
  • Denmark 16%
  23 Citations (Scopus)

• One-year effect of changing duration of untreated psychosis in a single catchment area

  Larsen, T. K., Melle, I., Friis, S., Joa, I., Johannessen, J. O., Opjordsmoen, S., Simonsen, E., Vaglum, P. & McGlashan, T. H., 2007, In: The British journal of psychiatry. Supplement. 51, p. 128-32 5 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Psychotic Disorders 100%
  14 Citations (Scopus)

• Personlighedsforstyrrelser

  Translated title of the contribution: Personality disordersSimonsen, E., Haahr, U. H., Kjølbye, M. & Sørensen, P., 2007, In: Ugeskrift for Laeger. 169, 21, p. 2002-5 4 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Personality Disorders 100%
  • Education 37%
  • Research Personnel 20%

• Psykoedukation og familiegrupper for patienter med nydebuterede psykoser

  Translated title of the contribution: Psychoeducation and multifamily groups for patients with first-episode psychosisLyse, H-G., Haahr, U. H., Fjell, A., Dichmann, B., Flensborg, E. & Simonsen, E., 2007, In: Ugeskrift for Laeger. 169, 43, p. 3668-72 5 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Denmark 100%
  • Psychotic Disorders 88%
  4 Citations (Scopus)

• The course of neurocognitive functioning in first-episode psychosis and its relation to premorbid adjustment, duration of untreated psychosis, and relapse

  Rund, B. R., Melle, I., Friis, S., Johannessen, J. O., Larsen, T. K., Midbøe, L. J., Opjordsmoen, S., Simonsen, E., Vaglum, P. & McGlashan, T., 2007, In: Schizophrenia Research. 91, 1-3, p. 132-40 9 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Social Adjustment 100%
  • Short-Term Memory 98%
  • Psychotic Disorders 98%
  • Verbal Learning 83%
  • Recurrence 60%
  105 Citations (Scopus)

• The impact of personality and personality disorders on the treatment of depression

  Gabbard, G. O. & Simonsen, E., Nov 2007, In: Personality and Mental Health. 1, p. 161-175 15 p.

  Research output: Contribution to journal › Journal article › Research › peer-review
• 2006

  Alternative dimensional models of personality disorder: Finding a common ground

  Widiger, T. A. & Simonsen, E., 2006, Dimensional models of personality disorders.: Refining the research agenda for DSM-V. Widiger, T. A., Simonsen, E., Sirovatka, P. & Regier, D. A. (eds.). Washington, DC: American Psychiatric Association, p. 1-21

  Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Communication

• Commentary on Verheul: Focusing on the clinician's need for at better model

  Simonsen, E., 2006, Dimensional models of Personality Disorders.: Refining the Research Agenda for DSM-V. Widiger, T. A., Simonsen, E., Sirovatka, P. & Regier, D. A. (eds.). 1 ed. Washington, DC: American Psychiatric Association, p. 219-226

  Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Communication

• Dimensional models of personality disorders. Refining the research agenda for DSM-V

  Widiger, T. A. (ed.) & Simonsen, E. (ed.), 2006, Washington, DC: American Psychiatric Association.

  Research output: Book/Report › Book › Communication

• Early detection of first-episode psychosis: the effect on 1-year outcome

  Larsen, T. K., Melle, I., Auestad, B., Friis, S., Haahr, U., Johannessen, J. O., Opjordsmoen, S., Rund, B. R., Simonsen, E., Vaglum, P. & McGlashan, T., 2006, In: Schizophrenia Bulletin. 32, 4, p. 758-64 7 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Psychotic Disorders 100%
  99 Citations (Scopus)

• Early detection of the first episode of schizophrenia and suicidal behavior

  Melle, I., Johannesen, J. O., Friis, S., Haahr, U., Joa, I., Larsen, T. K., Opjordsmoen, S., Rund, B. R., Simonsen, E., Vaglum, P. & McGlashan, T., 1 Jan 2006, In: American Journal of Psychiatry. 163, 5, p. 800-804 5 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Schizophrenia 100%
  • Suicide 37%
  • Psychotic Disorders 25%
  • Therapeutics 20%
  • Psychiatry 10%
  166 Citations (Scopus)

• Millon Clinical Multiaxial Inventory (MCMI)

  Simonsen, E., Jensen, H. H. & Mortensen, E. L., 2006, Assessmentmetoder: Håndbog for psykologer og psykiatere. Elsass, P., Ivanouw, J., Mortensen, E. L., Poulsen, S. & Rosenbaum, B. (eds.). Dansk Psykologisk Forlag, p. 259-272

  Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Communication

• Personality and psychosis

  Simonsen, E., 2006, Evolving psychosis: : different stages, different treatments. Johannessen, J. O., Martindale, B. & Cullberg, J. (eds.). London: Brunner-Routledge, p. 35-48

  Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Communication

• Personality disorder research agenda for DSM-V

  Widiger, T. A., Simonsen, E., Krueger, R. F., Livesley, W. J. & Verheul, R., 2006, Dimensional models of personality disorders.: Refining the research agenda for DSM-V. Widiger, T. A., Simonsen, E., Sirovatka, P. & Regier, D. A. (eds.). 1 ed. Washington, DC: American Psychiatric Association, p. 233-256

  Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Communication

• Substance abuse in first-episode non-affective psychosis

  Larsen, T. K., Melle, I., Auestad, B., Friis, S., Haahr, U., Johannessen, J. O., Opjordsmoen, S., Rund, B. R., Simonsen, E., Vaglum, P. & McGlashan, T. H., 2006, In: Schizophrenia Research. 88, 1-3, p. 55-62 8 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Psychotic Disorders 100%
  • Substance-Related Disorders 94%
  • Alcohols 64%
  • Alcoholism 38%
  • Pharmaceutical Preparations 35%
  76 Citations (Scopus)
• 2005

  Alternative dimensional models of personality disorder: finding a common ground

  Widiger, T. A. & Simonsen, E., 2005, In: Journal of Personality Disorders. 19, 2, p. 110-30 21 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • personality disorder 100%
  • Personality Disorders 96%
  • Lead 39%
  480 Citations (Scopus)

• Different factors that influence validity of "cluster A" personality disorders diagnoses. Commentary to Parnas J. Cluster A personality disorders

  Simonsen, E., 2005, Personality Disorders. Maj, M., Akiskal, H., Mezzich, J. & Okasha, A. (eds.). Wiley, Vol. 8. (Evidence and experience in psychiatry, Vol. 8).

  Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Communication

• Effect of an early detection programme on duration of untreated psychosis: part of the Scandinavian TIPS study

  Friis, S., Vaglum, P., Haahr, U., Johannessen, J. O., Larsen, T. K., Melle, I., Opjordsmoen, S., Rund, B. R., Simonsen, E. & McGlashan, T. H., 2005, In: The British journal of psychiatry. Supplement. 48, p. 29-32 4 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Psychotic Disorders 100%
  45 Citations (Scopus)

• Experiences in translating the Millon Inventories in a European country

  Simonsen, E., 2005, Handbook of personology and psychopathology. Strack, S. S. (ed.). New York: Wiley, p. 390-402

  Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Communication

• Introduction to "Early psychosis: a bridge to the future"

  McGorry, P., Nordentoft, M. & Simonsen, E., 2005, In: The British journal of psychiatry. Supplement. 48, p. 1-3 3 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Psychotic Disorders 100%
  • Mental Disorders 43%
  • Early Diagnosis 43%
  • Psychiatry 39%
  • Medicine 39%
  24 Citations (Scopus)

• Introduction To The Special Section: The American Psychiatric Association's Research Agenda For The DSM-V

  Widiger, T. A. & Simonsen, E., 2005, In: Journal Of Personality Disorders. 19, 2, p. 103-109 7 p.

  Research output: Contribution to journal › Editorial › peer-review

  41 Citations (Scopus)

• MCMI III. Millon Clinical Multiaxial Inventory III. Vejledning: Uddrag og dansk bearbejdning af Millon T, Davis R, Millon C: MCMI-III Mnaual, 2. edition

  Elklit, A. & Simonsen, E., 2005, Virum: Dansk Psykologisk Forlag.

  Research output: Book/Report › Book › Education

• Measuring quality of life in first-episode psychosis

  Melle, I., Friis, S., Haahr, U., Johannesen, J. O., Larsen, T. K., Opjordsmoen, S., Roessberg, J. I., Rund, B. R., Simonsen, E., Vaglum, P. & McGlashan, T., Nov 2005, In: European Psychiatry. 20, 7, p. 474-83 10 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Psychotic Disorders 100%
  • Quality of Life 68%
  • Interviews 26%
  • Social Adjustment 25%
  • Psychotic Affective Disorders 19%
  41 Citations (Scopus)

• New developments in personality disorder research

  Simonsen, E. & Tyrer, P., 2005, Advances in psychiatry. Christodoulou, G. N. (ed.). 2 ed. World Psychiatric Association

  Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Communication

• Pathways to care for first-episode psychosis in an early detection healthcare sector: part of the Scandinavian TIPS study

  Johannessen, J. O., Larsen, T. K., Joa, I., Melle, I., Friis, S., Opjordsmoen, S., Rund, B. R., Simonsen, E., Vaglum, P. & McGlashan, T. H., 2005, In: The British journal of psychiatry. Supplement. 48, p. 24-8 5 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Episode of Care 100%
  • Health Care Sector 86%
  • Psychotic Disorders 65%
  • Education 44%
  • Therapeutics 11%
  53 Citations (Scopus)

• Personality disorder research agenda for the DSM-V

  Widiger, T. A., Simonsen, E., Krueger, R., Livesley, W. J. & Verheul, R., 2005, In: Journal of Personality Disorders. 19, 3, p. 315-38 24 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • personality disorder 100%
  • Personality Disorders 96%
  • Congresses 85%
  • Diagnostic and Statistical Manual of Mental Disorders 80%
  • Behavioral Genetics 30%
  153 Citations (Scopus)

• Reducing the duration of untreated first-episode psychosis -- effects on baseline social functioning and quality of life

  Melle, I., Haahr, U., Friis, S., Hustoft, K., Johannessen, J. O., Larsen, T. K., Opjordsmoen, S., Rund, B. R., Simonsen, E., Vaglum, P. & McGlashan, T., Dec 2005, In: Acta Psychiatrica Scandinavica. Supplementum. 112, 6, p. 469-73 5 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Psychotic Disorders 100%
  • Quality of Life 68%
  • Informed Consent 17%
  • Diagnostic and Statistical Manual of Mental Disorders 16%
  • Multivariate Analysis 12%
  45 Citations (Scopus)
• 2004

  Daghospitalsbehandling versus heldøgnsindlaeggelse ved akutte psykiatriske tilstande

  Translated title of the contribution: Day hospital treatment versus hospital admission in acute psychiatric illnessSimonsen, E., Folker, H. & Nystrup, J., 2004, In: Ugeskrift for Laeger. 166, 18, p. 1653-6 4 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  1 Citation (Scopus)

• Does duration of untreated psychosis bias study samples of first-episode psychosis?

  Friis, S., Melle, I., Larsen, T. K., Haahr, U., Johannessen, J. O., Simonsen, E., Opjordsmoen, S., Vaglum, P. & McGlashan, T. H., Oct 2004, In: Acta Psychiatrica Scandinavica. Supplementum. 110, 4, p. 286-91 6 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Psychotic Disorders 100%
  • Substance-Related Disorders 8%
  • Age Groups 6%
  • Regression Analysis 6%
  • Health Care Outcome Assessment 6%
  38 Citations (Scopus)

• Neurocognitive dysfunction in first-episode psychosis: correlates with symptoms, premorbid adjustment, and duration of untreated psychosis

  Rund, B. R., Melle, I., Friis, S., Larsen, T. K., Midbøe, L. J., Opjordsmoen, S., Simonsen, E., Vaglum, P. & McGlashan, T., 2004, In: American Journal of Psychiatry. 161, 3, p. 466-72 7 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Social Adjustment 100%
  • Psychotic Disorders 98%
  • Cognition 41%
  150 Citations (Scopus)

• Personlighedsforstyrrelser

  Simonsen, E., 2004, Psykiatri - en grundbog. Poulsen, H. D., Munk-Jørgensen, P. & Bolwig, T. G. (eds.). 2 ed. København: Munksgaard , p. 250-268

  Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Communication

• Premorbid adjustment in first-episode non-affective psychosis: distinct patterns of pre-onset course

  Larsen, T. K., Friis, S., Haahr, U., Johannessen, J. O., Melle, I., Opjordsmoen, S., Rund, B. R., Simonsen, E., Vaglum, P. V. & McGlashan, T. H., 2004, In: British Journal of Psychiatry. 185, p. 108-15 8 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Social Adjustment 100%
  • Psychotic Disorders 98%
  122 Citations (Scopus)

• Reducing the duration of untreated first-episode psychosis: effects on clinical presentation

  Melle, I., Larsen, T. K., Haahr, U., Friis, S., Johannessen, J. O., Opjordsmoen, S., Simonsen, E., Rund, B. R., Vaglum, P. & McGlashan, T., 2004, In: Archives of General Psychiatry. 61, 2, p. 143-50 8 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Psychotic Disorders 100%
  344 Citations (Scopus)
• 2003

  Det sårbare sind

  Simonsen, E., 2003, København: Gyldendal.

  Research output: Book/Report › Book › Communication

• Methodological pitfalls in early detection studies–the NAPE Lecture 2002

  Svein, F., Tor Ketil, L., Melle, I., Opjordsmoen, S., Johannessen, J. O., Haahr, U. H., Simonsen, E., Rund, B. R., Vaglum, P. & McGlashan, T., 2003, In: Acta Psychiatrica Scandinavica. Supplementum. 107, p. 3-9 7 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  83 Citations (Scopus)

• Personality disorder in psychiatric practice

  Tyrer, P. & Simonsen, E., 2003, In: World Psychiatry. 2, 1, p. 41-4 4 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

• Tidlige tegn på psykose - erfaringer fra TIPS-projektet (tidlig intervention ved psykose)

  Simonsen, E., 2003, In: Hospital Health Care. 2, p. 16-20 5 p.

  Research output: Contribution to journal › Journal article › Research › peer-review
• 2001

  A systematized program to reduce duration of untreated psychosis in first episode schizophrenia. Proceedings of the Nato Advanced Research Workshop on Early Intervention in Psychiatric Disorders, Prague, Czec Republic, October 22-27, 1998

  Johannessen, J. O., Larsen, T. K., Horneland, M., Joa, I., Mardal, S., Kvebaek, R., Friis, S., Melle, I., Opjordsmoen, S., Simonsen, E., Vaglum, P. & McGlashan, T. H., 2001, The Netherlands: Kluwer Acad. Publishers.

  Research output: Book/Report › Book › Education › peer-review

• Early detection and intervention in first-episode schizophrenia: a critical review

  Larsen, T. K., Friis, S., Haahr, U., Joa, I., Johannessen, J. O., Melle, I., Opjordsmoen, S., Simonsen, E. & Vaglum, P., May 2001, In: Acta Psychiatrica Scandinavica. Supplementum. 103, 5, p. 323-34 12 p.

  Research output: Contribution to journal › Review › peer-review

  • Psychotic Disorders 100%
  • Schizophrenia 87%
  • Primary Prevention 18%
  • Secondary Prevention 17%
  • Health Services 15%
  178 Citations (Scopus)

• Early detection strategies for untreated first-episode psychosis

  Johannessen, J. O., McGlashan, T. H., Larsen, T. K., Horneland, M., Joa, I., Mardal, S., Kvebaek, R., Friis, S., Melle, I., Opjordsmoen, S., Simonsen, E., Haahr, U. H. & Vaglum, P., 1 Aug 2001, In: Schizophrenia Research. 51, 1, p. 39-46 8 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Psychotic Disorders 100%
  • Norway 57%
  • Denmark 37%
  • Schizophrenia 29%
  • Referral and Consultation 26%
  186 Citations (Scopus)

• Om og med psykoser

  Simonsen, E., Lyse, H-G., Hansen, A. O. & Knudsen, P., 2001, Psykiatrifondens Forlag.

  Research output: Book/Report › Book › Communication

• Shortened duration of untreated first episode of psychosis: changes in patient characteristics at treatment

  Larsen, T. K., McGlashan, T. H., Johannessen, J. O., Friis, S., Guldberg, C., Haahr, U., Horneland, M., Melle, I., Moe, L. C., Opjordsmoen, S., Simonsen, E. & Vaglum, P., Nov 2001, In: The American Journal of Psychiatry. 158, 11, p. 1917-9 3 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Psychotic Disorders 100%
  • Schizophrenia 29%
  • Health Care Sector 21%
  • Therapeutics 17%
  • Diagnostic and Statistical Manual of Mental Disorders 16%
  139 Citations (Scopus)
• 2000

  Differentialdiagnostik mellem personlighedsforstyrrelse og nydebuteret psykose

  Simonsen, E., 2000, Tidlig indsats ved skizofreni. Jørgensen, P., Rosenbaum, B. & Larsen, T. K. (eds.). København: FADL's Forlag, p. 77-91

  Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Communication
• 1999

  Diagnostik og klassifikation af psykiske lidelser

  Simonsen, E., 1999, Dynamisk psykiatri. Cullberg, J., Nystrup, J., Simonsen, E. & Bonnevie, A. (eds.). 5 ed. København: Hans Reitzels Forlag

  Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Communication

• Distriktspsykiatri

  Simonsen, E., 1999, Dynamisk psykiatri. Cullberg, J., Nystrup, J., Simonsen, E. & Bonnevie, A. (eds.). 5 ed. Hans Reitzels Forlag

  Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Communication

• Dynamisk psykiatri

  Cullberg, J., Nystrup, J. E., Simonsen, E. & Bonnevie, A., 1999, 5 ed. København: Hans Reitzels Forlag.

  Research output: Book/Report › Book › Communication