Abstract
The present study aimes to explore the factorial structure and the internal consistency of the Clinician-Rated Dimension of Psychosis Symptom Severity (CRDPSS) on a sample of Saudi schizophrenic patients. The sample consisted of 160 participants: 80 schizophrenic patients their ages ranged between 18 and 60 years old (M= 33.82 & SD= 9.70), and 80 participants as a matched group their ages ranged between 18 and 63 years old (M= 33.94 & SD= 9.12). The following measurements were utilized: 1- Positive and Negative Syndrome Rating Scale (PANSS), 2- Brief Psychiatric Rating Scale (BPRS), and 3- the CRDPSS. The results indicated that the CRDPSS comprised three factors (positive symptoms, negative/cognitive symptoms, and affective symptoms. Furthermore, the results revealed that the CRDPSS has significantly discriminate between disordered and normal participants. Moreover, the results showed that the convergent validity of the CRDPSS with PANSS and BPRS. Finally, the CRDPSS has showed significant high internal consistency.
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