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EXPLOration of Processes Involved in Dissociative Identity Disorder (DID) (EXPLO-DID)

23. juni 2026 opdateret af: Lille University

EXPLOration Des Processus à l'Origine du Trouble Dissociatif de l'Identité (TDI)(EXPLOTDI)

Dissociative Identity Disorder (DID) is a psychological condition in which a person may feel as though they have multiple distinct personalities or identities. Today, this disorder is being discussed more and more, particularly among young people, partly due to its visibility on social media. However, researchers have observed that some individuals may mimic or exaggerate the symptoms, which makes it more difficult to understand the disorder.

The goal of this study is therefore to better understand:

  • in which situations these identity shifts occur
  • what people feel at that moment
  • and what happens next To do this, researchers will interview approximately 60 people, some with a diagnosed DID and others exhibiting simulated symptoms.

Participants will complete questionnaires and take part in an interview. The researchers will analyze:

  • the situations that trigger the changes
  • the associated thoughts and emotions
  • the behaviors
  • the consequences of these episodes

The ultimate goal is to better understand this disorder in order to:

  • improve care
  • and better distinguish between genuine cases and feigned ones

Studieoversigt

Status

Rekruttering

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

This study falls within the field of dissociative disorders, and more specifically dissociative identity disorder (DID), whose clinical validity and mechanisms remain controversial, particularly due to the reported frequency of feigned symptoms.

Objective The primary objective is to identify the functional determinants of episodes of personality state change, whether genuine or feigned, within the framework of cognitive-behavioral therapies (CBT).

The analysis is based on the SORC functional model:

  • S (Stimuli): triggering situations
  • O (Organism): cognitions, emotions, sensations, imagery
  • R (Response): operant behaviors
  • C (Consequences): short- and long-term effects Methodology An exploratory qualitative approach will be used, aimed at generating hypotheses for subsequent quantitative research.

Participants

  • N ≈ 60

    • 30 diagnosed with TDI
    • 30 simulated TDI
  • Multicenter recruitment
  • Inclusion: ≥ 18 years old, currently undergoing therapy Procedure

Participants will complete:

  • sociodemographic questionnaires

  • standardized scales:

    • dissociation (sDIS-Q)
    • dissociative beliefs (DSB)
    • knowledge about dissociation (KADS)
    • post-traumatic symptoms Then, a semi-structured qualitative interview will be conducted and recorded. Analysis
  • Thematic analysis of interviews
  • Data saturation approach
  • Cross-coding by raters Scientific objectives
  • Clarify the mechanisms of TDI
  • Identify functional patterns of dissociative episodes
  • Explore differences between genuine and feigned symptoms
  • Improve diagnostic validity and therapeutic interventions

Undersøgelsestype

Observationel

Tilmelding (Anslået)

60

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

  • Frankrig
      • Carvin, Frankrig
        • Rekruttering
        • Sophie Marek's Practice
        • Kontakt:
        • Ledende efterforsker:
          • Sophie Marek, psychologist
      • Chambray-lès-Tours, Frankrig
        • Rekruttering
        • Online Consultation Cabinet
        • Kontakt:
        • Ledende efterforsker:
          • Cécile Elorriaga, psychologist
      • Lille, Frankrig, 59800
        • Rekruttering
        • Online Consultation Cabinet - Alexis VANCAPPEL,
        • Kontakt:
        • Ledende efterforsker:
          • Alexis VANCAPPEL, PhD
      • Tours, Frankrig
        • Rekruttering
        • Centre Régional du Psychotraumatisme
        • Kontakt:
        • Ledende efterforsker:
          • William El-Hage, Dr, PhD

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Voksen
  • Ældre voksen

Tager imod sunde frivillige

Ingen

Prøveudtagningsmetode

Ikke-sandsynlighedsprøve

Studiebefolkning

People who report suffering from Dissociative Identity Disorder (DID).

Beskrivelse

Inclusion Criteria:

  • Individuals who report having Dissociative Identity Disorder (DID)
  • At least 18 years old
  • Currently receiving treatment from a therapist (psychologist or psychiatrist)

Exclusion Criteria:

  • Individuals under guardianship or court-ordered protection

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

Kohorter og interventioner

Gruppe / kohorte
Intervention / Behandling
Patients
patients diagnosticated with DDI or simulating DDI
Andet: Questionnaire and Physical Exam
5 standardized assessment tools measuring, respectively, dissociation (sDIS-Q; Vancappel, Chkili, et al., 2025), beliefs about dissociation (DSB; Vancappel et al., 2023), knowledge and skills related to dissociation (KADS; Vancappel, Chami, et al., 2025), psychotrauma (Ashbaugh et al., 2016), and dissociation simulation.
Andet: Interview
qualitative interview with the therapist they are already seeing
Patients' families and loved ones
the patients' families and loved ones
Andet: Questionnaire and Physical Exam
5 standardized assessment tools measuring, respectively, dissociation (sDIS-Q; Vancappel, Chkili, et al., 2025), beliefs about dissociation (DSB; Vancappel et al., 2023), knowledge and skills related to dissociation (KADS; Vancappel, Chami, et al., 2025), psychotrauma (Ashbaugh et al., 2016), and dissociation simulation.
Andet: Interview
qualitative interview with the therapist they are already seeing

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Dissociative symptoms
Tidsramme: baseline
Questionnaire
baseline
Beliefs about dissociation
Tidsramme: baseline
Questionnaire
baseline
Skills and knowledge regarding dissociation
Tidsramme: baseline
Questionnaire
baseline
Psychotraumatic symptoms
Tidsramme: baseline
Questionnaire
baseline
How the TDI Works
Tidsramme: baseline
Qualitative interview
baseline
Simulation
Tidsramme: baseline
Qualitative interview
baseline
Dissociative symptoms
Tidsramme: baseline
Qualitative interview
baseline

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Lille University

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

4. juni 2026

Primær færdiggørelse (Anslået)

30. juni 2026

Studieafslutning (Anslået)

30. juni 2028

Datoer for studieregistrering

Først indsendt

10. juni 2026

Først indsendt, der opfyldte QC-kriterier

18. juni 2026

Først opslået (Faktiske)

23. juni 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

26. juni 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

23. juni 2026

Sidst verificeret

1. juni 2026

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • D2025-6
  • 2025-A02614-45 (Anden identifikator: CPP)

Plan for individuelle deltagerdata (IPD)

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