Phenomenology of hallucinations: a factor analytic approach

The present study was carried out with the aim of obtaining a factor analytic solution of parameters of hallucinations in schizophrenia. Seventy-five chronic hallucinating schizophrenic patients were assessed on the Phenomenology of Hallucinations Scale and Brief Psychiatric Rating Scale. A factor analytic solution was obtained by principal component analysis using varimax rotation. Two factors, 'reality of hallucinatory perception' and 'immersion in hallucination', were obtained. Findings are discussed in relation to existing literature.