NCT07663890

Brief Summary

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

Trial Health

77
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
60

participants targeted

Target at P25-P50 for all trials

Timeline
23mo left

Started Jun 2026

Typical duration for all trials

Geographic Reach
1 country

4 active sites

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress9%
Jun 2026Jun 2028

Study Start

First participant enrolled

June 4, 2026

Completed
6 days until next milestone

First Submitted

Initial submission to the registry

June 10, 2026

Completed
13 days until next milestone

First Posted

Study publicly available on registry

June 23, 2026

Completed
7 days until next milestone

Primary Completion

Last participant's last visit for primary outcome

June 30, 2026

Completed
2 years until next milestone

Study Completion

Last participant's last visit for all outcomes

June 30, 2028

Expected
Last Updated

June 26, 2026

Status Verified

June 1, 2026

Enrollment Period

26 days

First QC Date

June 10, 2026

Last Update Submit

June 23, 2026

Conditions

Dissociative Identity Disorder (DID)

Keywords

Dissociative Identity Disorder

Outcome Measures

Primary Outcomes (7)

  • Dissociative symptoms

    Questionnaire

    baseline

  • Beliefs about dissociation

    Questionnaire

    baseline

  • Skills and knowledge regarding dissociation

    Questionnaire

    baseline

  • Psychotraumatic symptoms

    Questionnaire

    baseline

  • How the TDI Works

    Qualitative interview

    baseline

  • Simulation

    Qualitative interview

    baseline

  • Dissociative symptoms

    Qualitative interview

    baseline

Study Arms (2)

Patients

patients diagnosticated with DDI or simulating DDI

Other: Questionnaire and Physical ExamOther: Interview

Patients' families and loved ones

the patients' families and loved ones

Other: Questionnaire and Physical ExamOther: Interview

Interventions

Questionnaire and Physical ExamOTHER

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.

PatientsPatients' families and loved ones
InterviewOTHER

qualitative interview with the therapist they are already seeing

PatientsPatients' families and loved ones

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodNon-Probability Sample
Study Population

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

You may qualify if:

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

You may not qualify if:

  • Individuals under guardianship or court-ordered protection

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (4)

Sophie Marek's Practice

Carvin, France

RECRUITING

Online Consultation Cabinet

Chambray-lès-Tours, France

RECRUITING

Online Consultation Cabinet - Alexis VANCAPPEL,

Lille, 59800, France

RECRUITING

Centre Régional du Psychotraumatisme

Tours, France

RECRUITING

MeSH Terms

Conditions

Dissociative Identity Disorder

Interventions

Surveys and QuestionnairesRestraint, PhysicalInterviews as Topic

Condition Hierarchy (Ancestors)

Dissociative DisordersMental Disorders

Intervention Hierarchy (Ancestors)

Data CollectionEpidemiologic MethodsInvestigative TechniquesHealth Care Evaluation MechanismsQuality of Health CareHealth Care Quality, Access, and EvaluationPublic HealthEnvironment and Public HealthBehavior ControlTherapeuticsImmobilization

Study Design

Study Type
observational
Observational Model
CASE CONTROL
Time Perspective
CROSS SECTIONAL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

June 10, 2026

First Posted

June 23, 2026

Study Start

June 4, 2026

Primary Completion

June 30, 2026

Study Completion (Estimated)

June 30, 2028

Last Updated

June 26, 2026

Record last verified: 2026-06

Locations

FR(4)