Volume 10, Issue 2 (Summer 2008)                   Advances in Cognitive Sciences 2008, 10(2): 21-28 | Back to browse issues page

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Mohammadizadeh A, Borjali A. Schizotypal Trait Questionnaire (STQ) Versus Eysenck Personality Questionnaire (EPQ): Divergence and Convergence Between Two Perspectives In Psychosis. Advances in Cognitive Sciences. 2008; 10 (2) :21-28
URL: http://icssjournal.ir/article-1-420-en.html
Abstract:   (2736 Views)
Objective: Clinical and psychometric studies of personality have shown that in contrast to categorical classification of mental disorders, in pathological characteristics of personality, there is a behavioral continuity between the symptomatology of psychotic patients and non psychotic individuals in different dimensions. There are two major approaches for the evaluation of psychotic characteristics, which are reflected in questionnaires. The Schizotypal Trait Questionnaire (STQ) represents the clinical perspective, while Eysenck Personality Questionnaire (EPQ) represents the psychometric perspective in the evaluation of psychotic characteristics in personality. The aim of the present study is to compare these two instruments on the basis of psychotic characteristics, with regard to the Iranian psychometric characteristics of these questionnaires. 
Method: The current research which was carried out in an ex-post facto research context, is a descriptive cross-sectional study. A group of 304 normal participants (164 females and 140 males) from different schools of Shiraz and Allameh Tabatabaie Universities took part in this research. Data were analyzed using multivariate regression analysis. 
Results: Neuroticism is a better predictor of psychotic characteristics than psychoticism. The relation between schyzotypal and borderline personality scales and their factors with the neuroticism scale of Eysenck Personality Questionnaire, is stronger than their relation with the psychoticism scale.
Conclusions: These findings are in line with previous research results which have shown that schizotypal and borderline traits are more related to N rather than P scale of EPQ; because typical symptoms of psychosis are not observed in these patients. In addition, since the P scale of EPQ is more indicative of antisocial behavior, a low correlation with this scale was predictable.
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Type of Study: Research | Subject: Special
Received: 2008/02/8 | Accepted: 2008/04/16 | Published: 2008/06/21

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