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This page is an AI-assisted Turkish summary of the study presented at the 26th World Congress of Psychiatry. The study belongs to the presenting authors; please refer to the original source when citing it.

EV1256

Psychometric evaluation of the Persian version of the Beliefs About Voices Questionnaire–Revised (BAVQ-R) in patients with schizophrenia spectrum disorder

PSYCHOMETRIC EVALUATION OF THE PERSIAN VERSION OF THE BELIEFS ABOUT VOICES QUESTIONNAIRE: REVISED IN PATIENTS WITH SCHIZOPHRENIA SPECTRUM DISORDERS

The 31-item, four-factor structure of the Persian BAVQ-R, obtained by removing four items, demonstrated excellent fit and reliability, and its subscales were associated with clinical variables in the expected directions.

The study aimed to examine the factor structure, reliability, and convergent validity of the Persian version of the Beliefs About Voices Questionnaire–Revised (BAVQ-R) in patients with schizophrenia spectrum disorder. The sample comprised 298 outpatients diagnosed with schizophrenia spectrum disorder according to DSM-5 criteria (85.2% male; aged 19 to 50 years; M = 37.32; SD = 1.14). In addition to the BAVQ-R (31 items), participants completed the PSYRATS (auditory hallucinations and delusions), CDSS and BDI-II (depression), and SQLS (quality of life). Analyses used confirmatory factor analysis (CFA) with the WLSMV estimator, Cronbach’s alpha and McDonald’s omega for reliability, and Pearson correlations for convergent validity. After removing items 3, 6, 12, and 18, which had low or negative factor loadings, the resulting modified 31-item, four-factor model showed the best fit of all models compared (CFI = 0.996; TLI = 0.995; RMSEA = 0.042). Among the comparison models, the three-factor model yielded CFI = 0.958, TLI = 0.951, and RMSEA = 0.122; the five-factor model yielded CFI = 0.983, TLI = 0.982, and RMSEA = 0.074; and the 35-item, four-factor model yielded CFI = 0.982, TLI = 0.981, and RMSEA = 0.077. Subscale reliabilities were high: malevolence/omnipotence (9 items), α = 0.91 and ω = 0.91; benevolence (7 items), α = 0.94 and ω = 0.94; resistance (8 items), α = 0.92 and ω = 0.92; and engagement (7 items), α = 0.95 and ω = 0.95. Convergent validity analyses showed that the malevolence/omnipotence and resistance subscales had strong positive associations with hallucinations, delusions, depression, and poorer quality of life, whereas benevolence and engagement were negatively associated with these measures (the association between delusions and benevolence was not statistically significant). The authors concluded that the Persian BAVQ-R is a psychometrically sound instrument that can be used with confidence in research and clinical practice in Iran to support interventions aimed at reducing voice-related distress.

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