The current study focuses on exploring the 6-month test-retest stability of the Slovak second version of the Big Five Inventory (BFI-2) and its predictive power for subjective and psychological well-being, on value-focused behavior and everyday behavior. The sample consisted of 414 adult Slovak participants, who reported on their personalities using the BFI-2 on the first occasion, and then again circa 6 months later, along with well-being and behavior self-report measures focused on the past 6 months. The results showed a strong test-retest stability of the Slovak BFI-2's domains and facets. The Slovak BFI-2 also showed the expected pattern of well-being predictions with Extraversion and Negative Emotionality domains as the strongest predictors. Furthermore, meaningful trait-behavior links of the Slovak BFI-2 were discovered. Overall, our results contribute to the robust international knowledge base regarding stability, predictive power and ecological validity of the Big Five personality factors.

Abstract:The study focused on the gender differential item functioning in Slovak version of the Intelligence Structure Test 2000 -Revised (Amthauer et al., 2011). The sample included 744 middle and high school students with mean age of 16.94 years. The non-parametric method SIBTEST for identification of items with differential functioning was used in order to detect uniform and non-uniform DIF. The analysis showed that the I-S-T 2000 R includes several items with DIF favoring either males or females, but in most subtests, with no or small effect on differences between genders. Substantial but nonsignificant effect of DIF items on subtest score was found for Verbal Analogy, which contained six items with DIF all favoring females. These items included verbal content related to areas more common for females such as diet or food. The results suggest that specific content of verbal intelligence items can be a potential source of gender bias.