The factor structure of schizophrenic symptoms: Which model is supported by independent item analysis?

ÖZEL KIZIL E. T., SAKA M. C., Atbasoglu E. C., GÖĞÜŞ A. K.

TURK PSIKIYATRI DERGISI, vol.19, no.2, pp.141-148, 2008 (SSCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 19 Issue: 2
  • Publication Date: 2008
  • Journal Name: TURK PSIKIYATRI DERGISI
  • Journal Indexes: Social Sciences Citation Index (SSCI), Scopus, TR DİZİN (ULAKBİM)
  • Page Numbers: pp.141-148
  • Keywords: factor analysis, negative symptoms, positive symptoms, schizophrenia, NEGATIVE SYMPTOMS, PSYCHOPATHOLOGICAL DIMENSIONS, POSITIVE SYMPTOMS, SCALE, SANS, SAPS
  • Ankara University Affiliated: Yes

Abstract

Objective: Most studies that have investigated the symptom dimensions of schizophrenia utilizing the Scale for the Assessment of Positive Symptoms (SAPS) and the Scale for the Assessment of Negative Symptoms (SANS), both global rating scales, favored a 3-factor model. Only a few studies have examined the factor structure at the item level and they suggest a wider dimensional structure. The factor structure of schizophrenic symptoms has not been previously studied in Turkey, nor has the construct validity of these scales. The present study sought to determine the factor structure of the independent items and the construct validity of the scales.