Publications 2024

Broekhof R, Nordahl HM, Eikenæs IU, Selvik SG (2024)
Adverse Childhood Experiences Are Associated With Personality Disorder: A Prospective, Longitudinal Study
J Pers Disord, 38 (1), 19-33
DOI 10.1521/pedi.2024.38.1.19, PubMed 38324247

Publications 2023

Kvarstein EH, Frøyhaug M, Pettersen MS, Carlsen S, Ekberg A, Fjermestad-Noll J, Ulvestad DA, Gikling EL, Hjermann E, Lindberget K, Omvik S, Eikenæs IU, Hummelen B, Morken KTE, Wilberg T, Pedersen GAF (2023)
Improvement of personality functioning among people treated within personality disorder mental health services. A longitudinal, observational study
Front Psychiatry, 14, 1163347
DOI 10.3389/fpsyt.2023.1163347, PubMed 37229394

Langjord T, Pedersen G, Bovim T, Christensen TB, Eikenæs IU, Hove O, Kildahl AN, Mork E, Norheim AB, Ramleth RK, Ringen PA, Romm KL, Siqveland J, Schønning T, Stänicke L, Torgersen T, Pettersen M, Tveit T, Urnes Ø, Walby F, Kvarstein EH (2023)
Mental health disorders, functioning and health-related quality of life among extensively hospitalized patients due to severe self-harm - results from the Extreme Challenges project
Front Psychiatry, 14, 1258025
DOI 10.3389/fpsyt.2023.1258025, PubMed 37920539

Publications 2022

Hummelen B, Ulltveit-Moe Eikenæs I, Wilberg T (2022)
Is the alternative model for personality disorders able to capture avoidant personality disorder according to Section II of the DSM-5? A systematic review
Personal Disord, 13 (4), 412-417
DOI 10.1037/per0000553, PubMed 35787131

Nysaeter TE, Hummelen B, Christensen TB, Eikenaes IU, Selvik SG, Pedersen G, Bender DS, Skodol AE, Paap MCS (2022)
The Incremental Utility of Criteria A and B of the DSM-5 Alternative Model for Personality Disorders for Predicting DSM-IV/DSM-5 Section II Personality Disorders
J Pers Assess, 105 (1), 111-120
DOI 10.1080/00223891.2022.2039166, PubMed 35285763

Zahl KE, Pedersen G, Eikenaes IU, Stänicke LI, Wilberg T, Baltzersen ÅL, Pettersen MS, Hummelen B, Arnevik E, Johansen MS, Hartveit Kvarstein E (2022)
Avoidant and borderline personality disorder patients during the first Covid-19 wave in Norway - a survey-based comparison of therapy changes and patients' accommodations
Nord J Psychiatry, 77 (4), 336-344
DOI 10.1080/08039488.2022.2110614, PubMed 35984379

Publications 2021

Bach B, Eikenaes IU (2021)
Transdiagnostic conceptualization of social avoidance through the lens of personality functioning and traits
J Clin Psychol, 77 (5), 1249-1258
DOI 10.1002/jclp.23160, PubMed 34003505

Hartveit Kvarstein E, Zahl KE, Stänicke LI, Pettersen MS, Baltzersen ÅL, Johansen MS, Eikenæs IU, Hummelen B, Wilberg T, Ajo Arnevik E, Pedersen G (2021)
Vulnerability of personality disorder during COVID-19 crises: a multicenter survey of mental and social distress among patients referred to treatment
Nord J Psychiatry
DOI 10.1080/08039488.2021.1942980, PubMed 34369842

Kvarstein EH, Zahl KE, Stänicke LI, Pettersen MS, Baltzersen ÅL, Johansen MS, Eikenaes IU, Arnevik EA, Hummelen B, Wilberg T, Pedersen G (2021)
Vulnerability of personality disorder during the Covid-19 crises - a multicenter survey of treatment experiences among patients referred to treatment
Nord J Psychiatry, 76 (1), 52-63
DOI 10.1080/08039488.2021.1934110, PubMed 34126854

Pedersen G, Normann-Eide E, Eikenaes IU, Kvarstein EH, Wilberg T (2021)
Psychometric evaluation of the Norwegian Toronto Alexithymia Scale (TAS-20) in a multisite clinical sample of patients with personality disorders and personality problems
J Clin Psychol, 78 (6), 1118-1136
DOI 10.1002/jclp.23270, PubMed 34716595

Publications 2020

Eikeseth FF, Sætren SS, Benjamin BR, Ulltveit-Moe Eikenæs I, Sütterlin S, Hummelen B (2020)
The Test-Retest Reliability of Heart Rate Variability and Its Association With Personality Functioning
Front Psychiatry, 11, 558145
DOI 10.3389/fpsyt.2020.558145, PubMed 33329098

Hummelen B, Braeken J, Buer Christensen T, Nysaeter TE, Germans Selvik S, Walther K, Pedersen G, Eikenaes I, Paap MCS (2020)
A Psychometric Analysis of the Structured Clinical Interview for the DSM-5 Alternative Model for Personality Disorders Module I (SCID-5-AMPD-I): Level of Personality Functioning Scale
Assessment, 28 (5), 1320-1333
DOI 10.1177/1073191120967972, PubMed 33155489

Simonsen S, Eikenaes IU, Bach B, Kvarstein E, Gondan M, Møller SB, Wilberg T (2020)
Level of alexithymia as a measure of personality dysfunction in avoidant personality disorder
Nord J Psychiatry, 75 (4), 266-274
DOI 10.1080/08039488.2020.1841290, PubMed 33146059

Publications 2019

Buer Christensen T, Eikenaes I, Hummelen B, Pedersen G, Nysæter TE, Bender DS, Skodol AE, Selvik SG (2019)
Level of personality functioning as a predictor of psychosocial functioning-Concurrent validity of criterion A
Personal Disord, 11 (2), 79-90
DOI 10.1037/per0000352, PubMed 31580097

Buer Christensen T, Hummelen B, Paap MCS, Eikenaes I, Selvik SG, Kvarstein E, Pedersen G, Bender DS, Skodol AE, Nysæter TE (2019)
Evaluation of Diagnostic Thresholds for Criterion A in the Alternative DSM-5 Model for Personality Disorders
J Pers Disord, 34 (Supplement C), 40-61
DOI 10.1521/pedi_2019_33_455, PubMed 31682197

Ekeberg O, Urnes O, Hem E, Kvarstein EH, Eikenaes IUM (2019)
Patients with emotionally unstable personality disorder need appropriate emergency treatment
Tidsskr. Nor. Laegeforen., 139 (15), 1442-1444

Ekeberg O, Urnes O, Hem E, Kvarstein EH, Eikenaes IUM (2019)
Suicidal patients with personality disorder
Tidsskr. Nor. Laegeforen., 139 (15), 1445-1447

Ekeberg Ø, Kvarstein EH, Urnes Ø, Eikenæs IU, Hem E (2019)
Suicidal patients with personality disorder
Tidsskr Nor Laegeforen, 139 (15)
DOI 10.4045/tidsskr.19.0493, PubMed 31642623

Ekeberg Ø, Kvarstein EH, Urnes Ø, Eikenæs IU, Hem E (2019)
Patients with borderline personality disorder need tailored emergency care
Tidsskr Nor Laegeforen, 139 (15)
DOI 10.4045/tidsskr.19.0492, PubMed 31642629

Ekeberg Ø, Urnes Ø, Kvarstein EH, Eikenæs IU, Hem E (2019)
[Correction: Patients with borderline personality disorder need tailored emergency care]
Tidsskr Nor Laegeforen, 139 (16)
DOI 10.4045/tidsskr.19.0661, PubMed 31686482

Simonsen S, Eikenaes IUM, Norgaard NL, Normann-Eide E, Juul S, Wilberg T (2019)
Specialized Treatment for Patients with Severe Avoidant Personality Disorder: Experiences from Scandinavia
J. Contemp. Psychother., 49 (1), 27-38
DOI 10.1007/s10879-018-9395-x

Publications 2018

Buer Christensen T, Paap MCS, Arnesen M, Koritzinsky K, Nysaeter TE, Eikenaes I, Germans Selvik S, Walther K, Torgersen S, Bender DS, Skodol AE, Kvarstein E, Pedersen G, Hummelen B (2018)
Interrater Reliability of the Structured Clinical Interview for the DSM-5 Alternative Model of Personality Disorders Module i: Level of Personality Functioning Scale
J Pers Assess, 100 (6), 630-641
DOI 10.1080/00223891.2018.1483377, PubMed 30084661

Publications 2015

Eikenaes I, Egeland J, Hummelen B, Wilberg T (2015)
Avoidant personality disorder versus social phobia: the significance of childhood neglect
PLoS One, 10 (3), e0122846
DOI 10.1371/journal.pone.0122846, PubMed 25815817

Eikenaes I, Egeland J, Hummelen B, Wilberg T (2015)
Correction: Avoidant Personality Disorder versus Social Phobia: The Significance of Childhood Neglect
PLoS One, 10 (5), e0128737
DOI 10.1371/journal.pone.0128737, PubMed 25978045

Eikenaes I, Pedersen G, Wilberg T (2015)
Attachment styles in patients with avoidant personality disorder compared with social phobia
Psychol Psychother, 89 (3), 245-60
DOI 10.1111/papt.12075, PubMed 26332087

Pedersen G, Eikenæs I, Urnes Ø, Skulberg GM, Wilberg T (2015)
Experiences in Close Relationships – Psychometric properties among patients with personality disorders
Personal Ment Health, 9 (3), 208-19
DOI 10.1002/pmh.1298, PubMed 26033784

Publications 2013

Eikenaes I, Hummelen B, Abrahamsen G, Andrea H, Wilberg T (2013)
Personality functioning in patients with avoidant personality disorder and social phobia
J Pers Disord, 27 (6), 746-63
DOI 10.1521/pedi_2013_27_109, PubMed 23786266

Publications 2006

Eikenaes I, Gude T, Hoffart A (2006)
Integrated wilderness therapy for avoidant personality disorder
Nord J Psychiatry, 60 (4), 275-81
DOI 10.1080/08039480600790093, PubMed 16923635