Κατεύθυνση Κλινική ψυχολογία
Library of the School of Philosophy

2019-07-16

2019

Ermiliou Vasiliki-Maria

Κωνσταντίνος Μυλωνάς, Καθηγητής Μεθοδολογίας Επιστημονικής Έρευνας & Στατιστικής στην Ψυχολογία, Τμήμα Ψυχολογίας ΕΚΠΑ
Άννα Χριστοπούλου, Αναπλ. Καθηγήτρια Κλινικής Κοινοτικής Ψυχολογίας, Τμήμα Ψυχολογίας ΕΚΠΑ
Αρχοντούλα Χαρίλα, Ε.Δ.Ι.Π. Κλινικής Ψυχολογίας, Τμήμα Ψυχολογίας ΕΚΠΑ

Αξιολόγηση των ψυχομετρικών ιδιοτήτων του ερωτηματολογίου Βραχείες Κλίμακες Πυρηνικών Σχημάτων σε άτομα με πρώτο ψυχωτικό επεισόδιο και σε μη κλινικό πληθυσμό

Greek

Exploring the psychometric properties of the Greek version of the Brief Core Schema Scales: a comparison between a general-population sample and a sample with a first psychotic episode

An individual’s core schemas concerning oneself as well as others is believed to contribute significantly to the onset of a psychotic episode. These schemas are formed based on an individual’s adverse experiences during childhood. As a result, the individual experiences an ongoing feeling of vulnerability. At the same time, during the onset of a psychotic episode, the individual uses his/her core schemas so as to explain the disorders in relation to his/her perception and his/her thoughts; a fact which confirms the pre-existing dysfunctional beliefs. The aim of this research is to examine the psychometric properties of the Greek version of the Brief Core Schema Scales-BCSS in relation to a sample of individuals with a first psychotic episode (N=148) and a sample of university students (N=165). Specifically, in both samples we examined whether the core schemas correlated to depression, paranoid ideation and psychoticism. Specifically in the clinical sample, we examined how core schemas are related to the positive symptoms of psychosis whereas in the non-clinical sample we examined how core schemas are related to self-esteem and aggression due to provocation and frustration. The results which ensued from the analysis of the psychometric properties of BCSS revealed that BCSS provides a high level of internal consistency reliability and a satisfactory concurrent validity. The concurrent validity revealed that in the clinical sample, negative self-schemas and negative schemas about others presented a positive correlation to depression. In the student sample, a positive correlation was observed only between depression and negative self-schemas. Moreover, in both samples negative self-schemas presented a positive correlation to paranoid ideation and psychoticism. Although negative schemas about others were found to have a positive correlation to paranoid ideation in both samples, a positive correlation between negative schemas about others and psychoticism was observed only in the clinical sample. In the clinical sample, a positive correlation between negative schemas about others and positive psychotic symptoms was found. In the non-clinical sample, low self-esteem was found to have a strong positive correlation to negative self-schemas and a strong negative correlation to positive self-schemas. Furthermore, in the non-clinical sample a positive correlation was observed between negative schemas about others and aggression due to provocation. An important finding was the congruence between the BCSS four dimensional theoretical model and the four dimensions extracted from the component analysis of the present study. Based on the evaluation of the factors’ equivalence between the two samples, a high factor equivalence was observed for the three factors whereas the factor “Negative self-schemas” was found similar but not equivalent. In conclusion, the clinical sample showed a statistically significant higher score in the subscales “Negative self-schemas” and “Positive schemas about others” in comparison to the non-clinical sample.

Philosophy - Psychology

core schemas, first episode psychosis, positive psychotic symptoms, concurrent validity, internal consistency

Yes

2

No

141

199

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https://pergamos.lib.uoa.gr/uoa/dl/object/2878898