TPM - TESTING, PSYCHOMETRICS, METHODOLOGY IN APPLIED PSYCHOLOGY, cilt.30, sa.3, ss.319-331, 2023 (ESCI)
The Difficulties in Emotion Regulation Scale (DERS) is one of the most widely used measures of emotion regulation. The general purpose of this research is to create the short form of the Difficulty in Emotion Regulation Scale (DERS-SF) by comparing the findings obtained from various metaheu-ristic algorithms (ACO, TS, and SA). The data of this study were collected from 398 undergraduate students. Correlated 6-factor and bifactor structures of DERS are tested with CFA. The model-data fit obtained from the correlated 6-factor structure created by the items selected by the ACO algorithms indicates a perfect fit. Also, hierarchical omega coefficients and standardi zed factor loadings show adequate psychometric properties. Strict measurement invariance was provided between gender groups. The correlations between the total score obtained from the Self-Compassion Scale and the nonacceptance, goals, impulse, strategies, awareness, and clarity factors of DERS-SF are negative and vary between moderate to high. As a result of this study, DERS-SF was developed as six factors and 18 items.