Quantifying Self-Reports of Auditory Verbal Hallucinations in Persons With Psychosis

The Hamilton Program for Schizophrenia Voices Questionnaire (HPSVQ) was developed to address the need for a brief, self-report measure that quantifies a range of the characteristics of auditory verbal hallucinations (AVHs). Each of the questionnaire's nine scored items utilizes a 5-point rating scale to yield a quantitative assessment of AVHs. The scale was well tolerated by a sample of 20 patients with schizophrenia and schizoaffective disorder at baseline and at one and eleven weeks postbaseline. It demonstrated good test-retest reliability over these intervals and good internal consistency. In addition, it demonstrated adequate concurrent validity when compared with the interviewer-rated Psychotic Symptoms Rating Scales Auditory Hallucinations subscale. The results of this pilot study suggest that the HPSVQ is potentially a reliable and useful measure for quantifying AVHs in persons suffering from psychosis.