Psykometriske studier

Studier av reliabilitet og validitet ved målinger og målemetoder

Bakgrunn

Validiteten ved de konklusjonene vi trekker av skårer fra våre mål og målemetoder er helt avhengig av kvaliteten på disse. Dersom påliteligheten til våre vurderinger er svekket, eller at det trekkes feil eller tvilsomme konklusjoner, står evalueringer av behandlingseffekt, allianse, brukertilfredshet, diagnostikk, samt individuelle kliniske profiler på spill.

I tillegg til fokus på forståelse og behandling av personlighetsforstyrrelser, bruker Nettverk for personlighetsforstyrrelser mye ressurser på å evaluere de psykometriske egenskapene til sine kliniske mål og målemetoder. Tematisk kan dette arbeidet kategoriseres i på følgende måte:

  • Dimensjonalitet og skala-reliabilitet
  • Diagnostisering av personlighetsforstyrrelse
  • Dimensjonaliteten ved DSM PF-kriteriene
  • Testutvikling
  • Prediktive egenskaper
  • Generalizability og inter-rater reliability studier
  • Vurdering av global funksjon

Pågående studie

For tiden arbeides det med en evaluering av den norske versjonen av "Difficulties in Emotion Regulation Scale" (DERS) og to av dens kortversjoner (DERS-18 og DERS-SF). Utvalget blir hentet fra kvalitetsregisteret til Nettverk for personligetsforstyrrelser. I tillegg til analyser for å beskrive de psykometriske egenskapene til DERS (og dens kortversjoner), vil det også gjennomføres en validering med utvalgte undergrupper og ulike kliniske mål.

Psykometriske studier

Selv om alle publikasjoner fra vår forskningsgruppe er kronologisk listet sammen, har vi valgt ut de mest sentrale psykometriske studiene her. I tillegg kommer et annet prosjekt med hovedfokus på validitet og reliabilitet: Nor-AMP prosjektet.

Dimensjonalitet og skala-reliabilitet

  • Paap, M. C. S., Pedersen, G., Kvarstein, E. H., & Hummelen, B. (2023). Evaluating the Construct Validity of the Norwegian Version of the Level of Personality Functioning Scale - Brief Form 2.0 in A Large Clinical Sample. Journal of Personality Assessment. DOI: 10.1080/00223891.2023.2182694
  • Pedersen G, Kvarstein EH, Wilberg T, Folmo EJ, Burlingame G & Lorentzen S. (2021). The Group Questionnaire (GQ) – Psychometric properties among outpatients with personality disorders. Group Dynamics: Theory, Research, and Practice. http://dx.doi.org/10.1037/gdn0000176
  • Pedersen G, Norman-Eide E, Eikenæs IU-M, Kvarstein E, Wilberg T (2021). Psychometric evaluation of the Norwegian Toronto Alexithymia Scale (TAS-20) in a multi-site clinical sample of patients with personality disorders and personality problems. Journal of Clinical Psychology. DOI: 10.1002/jclp.23270
  • Paap MCS, Meijer RR, Cohen-Kettenis PT, Richter-Appelt H, de Cuypere G, Kreukels BPC, Pedersen G, Karterud S, Malt UF & Haraldsen I (2021). Why the factorial structure of the SCL-90-R is unstable: comparing patient groups with different levels of psychological distress using Mokken Scale Analysis. Psychiatry Research, 200(2-3):819-826. DOI: 10.1016/j.psychres.2012.03.012.
  • Breivik R, Wilberg T, Evensen J, Røssberg JI, Dahl HSJ, Pedersen G (2020). Countertransference feelings and personality disorders: A psychometric evaluation of a brief version of the Feeling Word Checklist (FWC-BV). BMC Psychiatry, 20:141. https://doi.org/10.1186/s12888-020-02556-6.
  • Pedersen G, Kvarstein EH & Wilberg T (2017). The Work and Social Adjustment Scale: Psychometric properties and validity among patients with personality disorders and traits. Personality and Mental Health.11, 215–228. DOI: 10.1002/pmh.1382
  • Pedersen G, Urnes Ø, Kvarstein EH, Karterud S. (2016). The three factors of the Psychoticism scale of SCL-90-R. Personality and Mental Health, 10, 244-255. doi: 10.1002/pmh.1278.
  • Pedersen G, Eikenæs I, Urnes Ø, Skulberg GM & Wilberg S (2015). Experiences in Close Relationships - Psychometric properties among patients with personality disorders. Personality and Mental Health, 9(3), 208-219. DOI 10.1002/pmh.1298.
  • Pedersen G, Johansen MS, Wilberg T & Karterud S (2014). Testing Different Versions of the Affective Neuroscience Personality Scales in a Clinical Sample. PLoSONE 9(10): e109394. doi:10.1371/journal.pone.0109394.
  • Paap MCS, Meijer RR, van Bebber J, Pedersen G, Karterud S, Hellem F & Haraldsen IR (2011). A study of the dimensionality and measurement precision of the SCL-90-R using Item Response Theory. International Journal of Methods in Psychiatric Research, 20(3), e39–e55.
  • Pedersen G, Karterud S (2002). Ward Atmosphere Scale for Therapeutic Programs (WAS-TP): Psychometric properties and clinical benefits. Therapeutic Communities, 23(4): 261-269.
  • Pedersen G (2002). Norsk revidert versjon av Inventory of Interpersonal Problems - Circumplex (IIP-C). Tidsskrift for Norsk Psykologforening, 39, 25-34.

Diagnostisering av personlighetsforstyrrelser

  • Pedersen G, Karterud S, Hummelen B & Wilberg T (2013). The impact of extended longitudinal observation on the assessment of personality disorders. Personality and Mental Health, 7, 277–287. DOI 10.1002/pmh.1234
  • Wilberg T, Dammen T, Friis S (2000). A Comparison of the Personality Diagnostic Questionnaire -4+ (PDQ-4) with LEAD Standard Diagnoses in Highly Symptomatic Patients. Comprehensive Psychiatry, 41(4), 295-302.

Dimensjonalitet ved DSM PF kriteriene

  • 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 PD factor. Personality Disorders: Theory, Research, and Treatment. https://doi.org/10.1037/per0000426
  • Hummelen, B., Pedersen, G., Wilberg, T., Karterud, S. (2015). Poor Validity of the DSM-IV Schizoid Personality Disorder Construct as a Diagnostic Category. Journal of Personality Disorders, 28, 1-13. doi: 10.1521/pedi_2014_28_159.
  • Hummelen B, Pedersen G & Karterud S (2012). Some suggestions for the DSM-5 schizotypal personality disorder construct. Comprehensive Psychiatry, 53(4), 341-349.
  • Falkum E, Pedersen G & Karterud S (2009). Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, paranoid personality disorder diagnosis: a unitary or a two-dimensional construct? Comprehansive Psychiatry, 50(6), 533-541.
  • Paap MCS, Bræken J, Pedersen G, Urnes Ø, Karterud S, Wilberg T, & Hummelen B (2017). A Psychometric Evaluation of the DSM-IV Criteria for Antisocial Personality Disorder: Dimensionality, Local Reliability, and Differential Item Functioning Across Gender. Assessment, 1-13. https://doi.org/10.1177/1073191117745126
  • Johansen M, Karterud S, Pedersen G, Gude T & Falkum E (2004). An investigation of the prototype validity of the borderline DSM-IV criteria. Acta Psyciatrica Scandinavica, 109(4), 289-298.
  • Karterud S, Øyen M & Pedersen G (2011). Validity aspects of the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, narcissistic personality disorder construct. Comprehensive Psychiatry, 52(5), 517–526.
  • Bakkevig JF & Karterud S (2010). Is the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, histrionic personality disorder category a valid construct? Comprehensive Psychiatry, 51(5), 462-70.
  • 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 the psychometric properties of the diagnostic criteria. Comprehensive Psychiatry, 47(5):376-83.
  • Hummelen B, Wilberg T, Pedersen G & Karterud S (2008). The Quality of the DSM-IV Obsessive-Compulsive Personality Disorder Construct as a Prototype Category. Journal of Nervous & Mental Disease, 196(6), 446-455.
  • Gude T, Karterud S, Pedersen G, Falkum E. (2006). The quality of the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition dependent personality disorder prototype. Comprehensive Psychiatry, 47(6):456-62.
  • Wilberg T, Hummelen B, Pedersen G & Karterud S (2008). A study of patients with personality disorder not otherwise specified. Comprehensive Psychiatry, 49(5), 460-468.

Testutvikling

  • Pedersen G, Tybring-Petersen K, Tønder M, Arnestad TB, Møller AC & Øya T (2013). Spørreskjema for måling av kroppsopplevelse. Tidsskrift for Norsk Psykologforening, 50, 992-998.

Prediktive egenskaper

  • Selvik S, Romild U, Hummelen B, Langbehn DR & 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. Personality and Mental Health, 12: 229–240. DOI: 10.1002/pmh.1418.
  • Pedersen G & Karterud S (2010). Using measures from the SCL-90-R to screen for personality disorders. Personality and Mental Health, 4(2), 121-132.
  • Pedersen G, Karterud S (2004). Is SCL-90R helpful for the clinician in assessing DSM-IV symptom disorders? Acta Psyciatrica Scandinavica, 110(3): 215-224.
  • Karterud S, Friis S, Irion T, Mehlum L, Vaglum P & Vaglum S (1995). A SCL-90-R derived index of the severity of personality disorders. Journal of Personality Disorders, 9, 112–123.

Generalizability og inter-rater reliability studier

  • Ulvestad, D. A., Johansen, M. S., Kvarstein, E. H., Pedersen, G., & Wilberg, T. (2022): A borderline focused Reflective Functioning measure – Interrater reliability of the Mentalization Breakdown Interview. Nordic Journal of Psychiatry, DOI: 10.1080/08039488.2022.2123040
  • Folmo EJ, Karterud SW, Bremer K, Walther KL, Kvarstein EH & Pedersen GAF (2017). The design of the MBT-G adherence and quality scale. Scandinavian Journal of Psychology, 58, 341–349. DOI: 10.1111/sjop.12375.
  • Karterud S, Pedersen G, Engen M, Johansen MS, Johansson P, Urnes Ø, Wilberg T & Bateman A (2012). The MBT adherence and Competence Scale (MBT-ACS): Development, structure and reliability. Psychotherapy Research, 23(6), 705-717. DOI: 10.1080/10503307.2012.708795.
  • Pedersen G, Hagtvet KA & Karterud S (2011). Interpersonal problems: Self-therapist agreement and therapist consensus. Journal of Clinical Psychology, 67(3), 308-317.

Evaluering av globalt funksjonsnivå

  • Pedersen G, Urnes Ø, Hummelen B, Wilberg T & Kvarstein EH (2018). Revised manual for the Global Assessment of Functioning scale. European Psychiatry, 51, 16–19. http://dx.doi.org/10.1016/j.eurpsy.2017.12.028
  • Støre-Valen J, Ryum T, Pedersen G, Pripp AH , Jose PE & Karterud S (2015). Does a Web-Based Feedback Training Program Result in Improved Reliability in Clinicians’ Ratings of the Global Assessment of Functioning (GAF) Scale? Psychological Assessment. 27(3), 865-873. doi: 10.1037/pas0000086.
  • Pedersen G & Karterud S (2012). The symptom and function dimensions of the Global Assessment of Functioning (GAF) scale. Comprehensive Psychiatry, 53(3), 292-298.
  • Pedersen G, Hagtvet KA & Karterud S. (2007). Generalizability studies of the Global assessment of functioning (GAF) - Split version. Comprehensive Psychiatry. 48, 88– 94.
  • Karterud S, Pedersen G, Løvdahl H, Friis S. (1998). Global assessment of functioning - split version. Background and scoring guidelines. Psychiatric clinic, Ullevaal university hospital, Oslo.
Publisert 8. feb. 2022 14:32 - Sist endret 14. des. 2023 10:01
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