Instruments

Networks of psychopathological experiences were based on data from 2 questionnaires indexing a broad symptom spectrum. First, the Community Assessment of Psychic Experiences (CAPE) was completed,⁴³ a 42-item self-report questionnaire assessing mild psychotic experiences that covers 3 subscales: positive psychotic experiences (20 items), negative psychotic experiences (14 items), and depressive feelings (8 items). Each item assesses frequency and associated distress on a 4-point scale. Only frequency items were used. Two items of the positive subscale were strongly interdependent, namely, “hearing voices” and “hearing voices talking to each other.” The latter item was deleted because of multicollinearity. Second, the Depression, Anxiety and Stress Scale (DASS-21) was completed,⁵⁶ covering 3 subscales: depression (7 items), anxiety (7 items), and distress (7 items). Each item is scored on a 4-point scale. The Depression subscale was excluded because of multicollinearity with the CAPE Depression subscale.