Paranoia Persecutory delusions
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: Age above 18, primary diagnosis of schizophrenia, schizoaffective disorder, or delusional disorder, all with current experience of persecutory delusions or paranoid thinking based on the criteria from the Diagnostic and Statistical Manual of Mental Disorders IV. Text Revision (DSM-IV-TR) and verified with the Mini International Neuropsychiatric Interview Plus (MINI-plus), a score above 50 on the persecutory item from the Green Paranoid Thought Scales (GPTS) and one question from the Positive and Negative Syndrome Scale (PANSS) regarding delusion which has to have a score between four and eight.
Exclusion criteria
Exclusion criteria: Insufficient knowledge of the Dutch language, cognitive impairment with a cut-off score of
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Primary measurements will be the scales taken from the Green Paranoid Thought Scale (GPTS) that assesses delusion, and the Psychotic Symptoms Rating Scale - Delusions (PSYRATS-DRS), rumination, assessed with the Ruminative Response Scale (RRS) and worry, assessed with the Penn State Worry Questionnaire (PSWQ). | — |
Secondary
| Measure | Time frame |
|---|---|
| Secondary measurements will be anxiety, assessed with the Beck Anxiety Inventory (BAI) and depression, assessed with the Beck Inventory of Depression - II (BDI2). In addition feasibility will be evaluated by interviewing patients on their opinion about the treatment and its effects. Also the participating therapists will be interviewed on their opinion about the feasibility and effectiveness of the treatment and on their collaboration. If a patient drops out of treatment, the reason for drop-out will be assessed by contacting the patient and the therapist. | — |
Countries
Netherlands