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Diagnostic efficiency comparison of PTI(perceptual-Thinking Index) with SCZI(Schizophrenia Index) of the Rorschach test in identifying psychotic disorder among children and adolescent patient groups

Abstract

The present study was to examine the diagnostic efficiency of the Rorschach Perceptual-Thinking Index(PTI; Exner, 2000) as compared to Schizophrenia Index(SCZI; Exner, 1993). Participants were 69 children and adolescents psychiatric patients; 25 with psychotic disorder, 27 with depression, 17 with conduct disorder. The results showed significant difference among three groups on PTI and psychotic disorder patients showed a higher level of PTI than comparison groups. The cutoff score of 3 for PTI resulted in the greatest diagnostic hit rate, 83%. As compared with SCZI, PTI had no difference on false negative rate, whereas produced lower false positive rate than SCZI. Implications and limitations of this study were discussed.

keywords
정신증적 장애, 우울증, 품행장애, 사고장애, 부정확한 지각, PTI, SCZI, psychotic disorder, depression, conduct disorder, thought disorder, inaccurate perception, PTI, SCZI., psychotic disorder, depression, conduct disorder, thought disorder, inaccurate perception, PTI, SCZI.

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