Investigation of the Validity and Reliability of the Young Positive Schema Questionnaire on Turkish Adolescents


Yıldırım M., Yüksel Şahin F.

Journal of Rational-Emotive & Cognitive-Behavior Therapy (SSCI, SCOPUS), cilt.44, sa.10, ss.1-18, 2026 (Scopus)

Özet

Abstract

Schema Therapy aims to regulate dysfunctional schemas that develop early in life

and persist into adulthood. This approach incorporates a range of theoretical frameworks,

including cognitive behavioral therapy, psychodynamic therapy, attachment

theory, and gestalt therapy. This study aims to examine the psychometric properties

of the Young Positive Schema Questionnaire (YPSQ) in an adolescent sample. The

YPSQ was developed by Louis et al. (Psychol Assess 30(9):1199, 2018) and subsequently

adapted to a Turkish adult sample by Velibaşoğlu (2021). The sample of

the present study comprised 777 adolescents enrolled in high school. Confirmatory

factor analysis (CFA) was performed to assess the factor structure of the scale and

the 14-factor structure was confirmed with 55 items (χ2/df = 1.90, RMSEA = 0.03,

CFI = 0.97, NFI = 0.96, GFI = 0.98, AGFI = 0.97). Item 53 in the original scale was

eliminated due to a factor loading below 0.30. The factor loadings of the scale items

range between 0.43 and 0.82. The criterion-related validity of the scale was assessed

by examining the relationship between the Young Positive Schema Questionnaire

and the Flourishing Scale. As a result, a high level of correlation was identified between

positive schemas and psychological well-being (r = .73, p < .01). The internal

consistency of the sub-factors of the scale was assessed by examining the mean

inter-item correlations, which ranged from 0.25 to 0.51. Consequently, the 14-factor

structure of the scale was found to be compatible with both the original scale and

the theoretical framework. The scale demonstrated adequate internal consistency.

The correlation of the Young Positive Schema Questionnaire and its sub-dimensions

with psychological well-being indicates satisfactory criterion-related validity.

Keywords Schema therapy · Positive schemas · Validity · Reliability