Project Voices
- Conditions
- A diagnosis of a dissociative identity disorder or a schizophrenia spectrum disorder
- Registration Number
- NL-OMON21947
- Lead Sponsor
- Stichting PVO
- Brief Summary
/A
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- Pending
- Sex
- Not specified
- Target Recruitment
- 93
In order to be eligible to participate in this study, a patient must meet one of the following criteria:
o A diagnosis of Dissociative Identity Disorder (DID) (300.14)
o A diagnosis of Schizophrenia Spectrum and other Psychotic Disorders (SSD), more specifically one of the following diagnoses in this category: Brief Psychotic Disorder (298.8); Schizophreniform Disorder (295.40) or Schizophrenia (295.90) and persistent voice hearing
- Participants will be divided into groups in terms of their diagnosis and the presence/absence of a childhood trauma history:
o Participants with Dissociative Identity Disorder
o Participants with Schizophrenia Spectrum Disorder with a childhood trauma history
o Participants with Schizophrenia Spectrum Disorder without a childhood trauma history
- Severe current substance abuse (e.g., the use of hallucinogens, cannabis, amphetamine-type stimulants and cocaine; DSM-5) that produces acute drug effects that are difficult to differentiate from the mental disorders and symptoms involving this study (e.g., dissociative feelings, hallucinations or paranoid ideation).
- The presence of a substance/medication-induced mental disorder that shares the phenomenology of schizophrenia spectrum disorders and dissociative disorders (e.g., cannabis or alcohol induced psychotic disorder).
- Severe brain damage, which prevents the participant from answering the questions and using the smartphone application properly.
- Lack of fluency in Dutch
- Severity of present disorders (e.g. too much anxiety or paranoid cognitive distortions), that disables the patient to contribute.
- Patients that meet both the diagnosis of dissociative identity disorder ánd schizophrenia spectrum disorder (true comorbidity) will be excluded.
- For ethical reasons, patients that are currently in crisis (i.e., immediate danger to oneself or others) will be excluded (e.g., acute high risk of suicide, severe self-injurious behavior, or severe aggression-control problems).
Study & Design
- Study Type
- Observational non invasive
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method Characteristics of voices (measured by daily momentary assessment)
- Secondary Outcome Measures
Name Time Method Dissociative symptoms; symptoms of psychosis; life events; characteristics of voices (as measured by a retrospective questionnaire); and insomnia