Delusion Ideation in the Context of Everyday Life: a Novel Smartphone-supported Psychological Therapy Approach (DICE)
The project aims to investigate the feasibility and acceptability of a blended face-to-face and smartphone intervention for distressing thoughts and experiences in people with schizophrenia spectrum disorders. A secondary aim is to assess the outcomes of the intervention at baseline (T0) and post-intervention (T1) (single-arm feasibility design). The study design is primarily based on Bell et al.'s (2018, 2020) blended face-to-face and smartphone intervention for hallucinations. The participants receive four face-to-face therapy sessions, using a smartphone between sessions employing elements of Ecological Momentary Assessment (EMA) and Intervention (EMI).
• be between 18 and 65 years old
• fulfill the diagnostic criteria for schizophrenia as determined by the Mini-International Neuropsychiatric Interview (M.I.N.I.) (Sheehan et al., 1998)
• suffer from residual delusions and significant self-reported distress as assessed by the PSYRATS Delusions (Haddock et al., 1999), Green Paranoid Thoughts, and Subjective Experiences of Psychosis Scales (Freeman et al., 2021).
• sufficient knowledge of German
• have not undergone a recent (\<6 weeks) or planned change in antipsychotic and other psychopharmacological medication
• know how to use a smartphone or be willing to learn how to use it
• Time availability to attend 4 therapy appointments with two additional rating appointments