Validity, reliability and factor structure of the Turkish version of the Borderline Personality Questionnaire (Turkish BPQ)

Objective: In this study, we aimed to examine the validity, reliability, and factor structure of the Borderline Personality Questionnaire in a Turkish sample. Methods: Participants were 306 (201 female, 105 male) college students at the Hasan Kalyoncu University in Gaziantep, Turkey. The study protocol was approved by the Ethics Committee of Hasan Kalyoncu University. Sociodemographic information of the participants was collected and Turkish BEST, Turkish BPQ, BDI, PBQ and State-Trait Anxiety scales were administered. All variables were screened for the accuracy of data entry, missing values, and homoscedasticity using SPSS version 23 for Windows. Results: The Cronbach alpha coefficients for the Turkish BPQ was found as 0.89. The test-retest correlation coefficient for Impulsivity, Affective Instability, Abandonment, Relationships, Self-Image, Suicide, Self-Mutilation, Emptiness, Intense Anger and Quasi Psychotic States were found to be 0.50, 0.77, 0.40, 0.68, 0.72, 0.48, 0.73, 0.74 and 0.62, respectively. A positive and statistically significant correlation was found between the Turkish BPQ and BEST (r=0.337, p<0.01), BDI (r=0.375, p<0.01), PBQ (r=0. 322, r<0.01), State Anxiety (r=0.299, p<0.01) and Trait Anxiety (r=0.306, p<0.01) scales. Principal axis factor analyses with Oblimin rotations were performed and two-factor structure was observed. Conclusions: Our results suggested that Turkish BPQ was a valid and reliable tool with a robust factorial structure to use in clinical population in Turkey. Keywords: Borderline Personality Questionnaire, reliability, validity, factor structure