Publications 2022

Kvarstein EH, Zahl KE, Stanicke LI, Pettersen MS, Baltzersen AL, Johansen MS, Eikenaes IUM, Arnevik EA, Hummelen B, Wilberg T, Pedersen G (2022)
Vulnerability of personality disorder during the Covid-19 crises - a multicenter survey of treatment experiences among patients referred to treatment
Nord. J. Psychiatr., 76 (1), 52-63
DOI 10.1080/08039488.2021.1934110

Publications 2021

Heltne A, Bode C, Hummelen B, Falkum E, Selvik SG, Paap MCS (2021)
Norwegian Clinicians' Experiences of Learnability and Usability of SCID-II, SCID-5-PD and SCID-5-AMPD-I Interviews: A Sequential Multi-Group Qualitative Approach
J. Pers. Assess.
DOI 10.1080/00223891.2021.1975726

Hummelen B, Braeken J, Christensen TB, Nysaeter TE, Selvik SG, Walther K, Pedersen G, Eikenaes I, Paap MCS (2021)
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), 1073191120967972-1333
DOI 10.1177/1073191120967972

Kvarstein EH, Zahl KE, Stanicke LI, Pettersen MS, Baltzersen AL, Johansen MS, Eikenaes IUM, Hummelen B, Wilberg T, Arnevik EA, 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. Psychiatr.
DOI 10.1080/08039488.2021.1942980

Paap MCS, Heltne A, Pedersen G, Selvik SG, Frans N, Wilberg T, Hummelen B (2021)
More Is More: Evidence for the Incremental Value of the SCID-II/SCID-5-PD Specific Factors Over and Above a General Personality Disorder Factor
Personal. Disord.
DOI 10.1037/per0000426

Paap MCS, Hummelen B, Braeken J, Arnevik EA, Walderhaug E, Wilberg T, Berghuis H, Hutsebaut J, Pedersen G (2021)
A multi-center psychometric evaluation of the Severity Indices of Personality Problems 118 (SIPP-118): Do we really need all those facets?
Qual. Life Res., 30 (2), 567-575
DOI 10.1007/s11136-020-02654-8

Ulberg R, Hummelen B, Hersoug AG, Midgley N, Hoglend PA, Dahl HSJ (2021)
The first experimental study of transference work-in teenagers (FEST-IT): a multicentre, observer- and patient-blind, randomised controlled component study
BMC Psychiatry, 21 (1), 106
DOI 10.1186/s12888-021-03055-y

Publications 2020

Boen E, Hummelen B, Boye B, Elvsashagen T, Malt UF (2020)
Borderline patients have difficulties describing feelings: bipolar II patients describe difficult feelings. An alexithymia study
Acta Psychiatr. Scand., 142 (3), 203-214
DOI 10.1111/acps.13204

Christensen TB, Eikenaes I, Hummelen B, Pedersen G, Nysaeter TE, Bender DS, Skodol AE, Selvik SG (2020)
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

Christensen TB, Hummelen B, Paap MCS, Eikenaes I, Selvik SG, Kvarstein E, Pedersen G, Bender DS, Skodol AE, Nysaeter TE (2020)
EVALUATION OF DIAGNOSTIC THRESHOLDS FOR CRITERION A IN THE ALTERNATIVE DSM-5 MODEL FOR PERSONALITY DISORDERS
J. Pers. Disord., 34 C, 40-61
DOI 10.1521/pedi_2019_33_455

Eikeseth FF, Saetren SS, Benjamin BR, Eikenaes IUM, Sutterlin 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

Paap MCS, Braeken J, Pedersen G, Urnes O, Karterud S, Wilberg T, Hummelen B (2020)
A Psychometric Evaluation of the DSM-IV Criteria for Antisocial Personality Disorder: Dimensionality, Local Reliability, and Differential Item Functioning Across Gender
Assessment, 27 (1), 89-101
DOI 10.1177/1073191117745126

Sonmez N, Romm KL, Ostefjells T, Grande M, Jensen LH, Hummelen B, Tesli M, Melle I, Rossberg JI (2020)
Cognitive behavior therapy in early psychosis with a focus on depression and low self-esteem: A randomized controlled trial
Compr. Psychiat., 97, 152157
DOI 10.1016/j.comppsych.2019.152157

Zimmermann J, Muller S, Bach B, Hutsebaut J, Hummelen B, Fischer F (2020)
A Common Metric for Self-Reported Severity of Personality Disorder
Psychopathology, 53 (3-4), 168-178
DOI 10.1159/000507377

Publications 2019

Arnevik EA, Pedersen G, Walderhaug E, Lien I, Wilberg T, Hummelen B (2019)
Measuring Personality Problems in Patients With Substance Use Disorders: A Cross-Sample Validation
J. Dual Diagn., 15 (4), 324-332
DOI 10.1080/15504263.2019.1668583

Boen E, Hjornevik T, Hummelen B, Elvsashagen T, Moberget T, Holtedahl JE, Babovic A, Hol PK, Karterud S, Malt UF (2019)
Patterns of altered regional brain glucose metabolism in borderline personality disorder and bipolar II disorder
Acta Psychiatr. Scand., 139 (3), 256-268
DOI 10.1111/acps.12997

Kvarstein EH, Pedersen G, Folmo E, Urnes O, Johansen MS, Hummelen B, Wilberg T, Karterud S (2019)
Mentalization-based treatment or psychodynamic treatment programmes for patients with borderline personality disorder - the impact of clinical severity
Psychol. Psychother.-Theory Res. Pract., 92 (1), 91-111
DOI 10.1111/papt.12179

Pedersen G, Arnevik EA, Hummelen B, Walderhaug E, Wilberg T (2019)
Psychometric Properties of the Severity Indices of Personality Problems (SIPP) in Two Samples A Norwegian Community Sample and Clinical Samples of Patients With and Without Personality Disorders
Eur. J. Psychol. Assess., 35 (5), 698-711
DOI 10.1027/1015-5759/a000436

Sunde T, Hummelen B, Himle JA, Walseth LT, Vogel PA, Launes G, Haaland VO, Haaland AT (2019)
Early maladaptive schemas impact on long-term outcome in patients treated with group behavioral therapy for obsessive-compulsive disorder
BMC Psychiatry, 19 (1), 318
DOI 10.1186/s12888-019-2285-2

Publications 2018

Christensen TB, Paap MCS, Arnesen M, Koritzinsky K, Nysaeter TE, Eikenaes I, Selvik SG, 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

Pedersen G, Urnes O, Hummelen B, Wilberg T, Kvarstein EH (2018)
Revised manual for the Global Assessment of Functioning scale
Eur. Psychiat., 51, 16-19
DOI 10.1016/j.eurpsy.2017.12.028

Selvik S, Hummelen B, Romild U, Langbehn D, Pedersen G (2018)
The Iowa Personality Disorder Screen: A validation study in a psychiatric population that receives long-term group psychotherapy for personality related problems
Personal. Ment. Health, 12 (3), 229-240
DOI 10.1002/pmh.1418

Publications 2017

Antonsen BT, Kvarstein EH, Urnes O, Hummelen B, Karterud S, Wilberg T (2017)
Favourable outcome of long-term combined psychotherapy for patients with borderline personality disorder: Six-year follow-up of a randomized study
Psychother. Res., 27 (1), 51-63
DOI 10.1080/10503307.2015.1072283

Haaland AT, Eskeland SO, Moen EM, Vogel PA, Haseth S, Mellingen K, Himle JA, Woods DW, Hummelen B (2017)
ACT-enhanced behavior therapy in group format for Trichotillomania: An effectiveness study
J. Obsessive-Compuls. Relat. Disord., 12, 109-116
DOI 10.1016/j.jocrd.2017.01.005

Publications 2016

Selvik SG, Kristiansen O, Hummelen B, Solhaug HI (2016)
A shortcut in the diagnosis of personality disorders?
Tidsskr. Nor. Laegeforen., 136 (7), 596
DOI 10.4045/tidsskr.16.0148

Publications 2015

Boen E, Hummelen B, Elvsashagen T, Boye B, Andersson S, Karterud S, Malt UF (2015)
Different impulsivity profiles in borderline personality disorder and bipolar II disorder
J. Affect. Disord., 170, 104-111
DOI 10.1016/j.jad.2014.08.033

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

Hummelen B, Pedersen G, Wilberg T, Karterud S (2015)
POOR VALIDITY OF THE DSM-IV SCHIZOID PERSONALITY DISORDER CONSTRUCT AS A DIAGNOSTIC CATEGORY
J. Pers. Disord., 29 (3), 334-346
DOI 10.1521/pedi_2014_28_159

Kvarstein EH, Pedersen G, Urnes O, Hummelen B, Wilberg T, Karterud S (2015)
Changing from a traditional psychodynamic treatment programme to mentalization-based treatment for patients with borderline personality disorder - Does it make a difference?
Psychol. Psychother.-Theory Res. Pract., 88 (1), 71-86
DOI 10.1111/papt.12036

Publications 2014

Antonsen BT, Klungsoyr O, Kamps A, Hummelen B, Johansen MS, Pedersen G, Urnes O, Kvarstein EH, Karterud S, Wilberg T (2014)
Step-down versus outpatient psychotherapeutic treatment for personality disorders: 6-year follow-up of the Ulleval personality project
BMC Psychiatry, 14, 119
DOI 10.1186/1471-244X-14-119

Boen E, Westlye LT, Elvsashagen T, Hummelen B, Hol PK, Boye B, Andersson S, Karterud S, Malt UF (2014)
Smaller stress-sensitive hippocampal subfields in women with borderline personality disorder without posttraumatic stress disorder
J. Psychiatry Neurosci., 39 (2), 127-134
DOI 10.1503/jpn.130070

Boen E, Westlye LT, Elvsashagen T, Hummelen B, Hol PK, Boye B, Andersson S, Karterud S, Malt UF (2014)
Regional cortical thinning may be a biological marker for borderline personality disorder
Acta Psychiatr. Scand., 130 (3), 193-204
DOI 10.1111/acps.12234

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), 746-763
DOI 10.1521/pedi_2013_27_109

Pedersen G, Karterud S, Hummelen B, Wilberg T (2013)
The impact of extended longitudinal observation on the assessment of personality disorders
Personal. Ment. Health, 7 (4), 277-287
DOI 10.1002/pmh.1234

Reas DL, Ro O, Karterud S, Hummelen B, Pedersen G (2013)
Eating Disorders in a Large Clinical Sample of Men and Women with Personality Disorders
Int. J. Eating Disord., 46 (8), 801-809
DOI 10.1002/eat.22176

Publications 2012

Hummelen B, Pedersen G, Karterud S (2012)
Some suggestions for the DSM-5 schizotypal personality disorder construct
Compr. Psychiat., 53 (4), 341-349
DOI 10.1016/j.comppsych.2011.05.009

Publications 2010

Hummelen B (2010)
Treatment of borderline personality disorder with schizotypal traits by Cesare Maffei, MD
Personal. Ment. Health, 4 (3), 229-232
DOI 10.1002/pmh.135

Publications 2008

Hummelen B, Wilberg T, Pedersen G, Karterud S (2008)
The quality of the DSM-IV obsessive-compulsive personality disorder construct as a prototype category
J. Nerv. Ment. Dis., 196 (6), 446-455
DOI 10.1097/NMD.0b013e3181775a4e

Wilberg T, Hummelen B, Pedersen G, Karterud S (2008)
A study of patients with personality disorder not otherwise specified
Compr. Psychiat., 49 (5), 460-468
DOI 10.1016/j.comppsych.2007.12.008

Publications 2007

Hummelen B, Wilberg T, Karterud S (2007)
Interviews of female patients with borderline personality disorder who dropped out of group psychotherapy
Int. J. Group Psychother., 57 (1), 67-91
DOI 10.1521/ijgp.2007.57.1.67

Hummelen B, Wilberg T, Pedersen G, Karterud S (2007)
The relationship between avoidant personality disorder and social phobia
Compr. Psychiat., 48 (4), 348-356
DOI 10.1016/j.comppsych.2007.03.004

Publications 2006

Hummelen B, Wilberg T, Pedersen G, Karterud S (2006)
An investigation of the validity of the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition avoidant personality disorder construct as a prototype category and diagnostic the psychometric properties of the criteria
Compr. Psychiat., 47 (5), 376-383
DOI 10.1016/j.comppsych.2006.01.006