ANALES DE PSICOLOGÍA, cilt.1, ss.1, 2025 (SCI-Expanded)
The
present study aimed to assess the psychometric properties of the Irrational
Beliefs Scale for Insomnia (IBSI) in Turkish emerging adults. The measurement
instrument aims to assess irrational beliefs by measuring four core irrational
beliefs (demandingness, awfulizing, frustration intolerance, and global
evolution of worth). A total of 762 emerging adults (556 female, 206 male)
between the ages of 19 and 28 were included in all stages of the study. The results
indicated that the IBSI, consisting of 4 dimensions and 24 items, is valid and reliable
according to the results of EFA, CFA, and network analysis. The calculated
Cronbach's α and McDonald's ω showed that the instrument was satisfactory. The
results provide strong evidence that the IBSI is a valid and reliable
instrument for Turkish emerging adults.