Аннотация:Several questionnaires exist for brief estimation of the Big Five personality factors. The majority of the short forms of the Big Five instruments aim to estimate the Big Five factors but not the facets within each factor. Assessing facets can be beneficial because facets may explain external behavior better than factors do. This paper presents a short form of the Big Five Questionnaire (BFQ) designed to assess both factors and facets, validated on a sample of Russian adolescents (14-18 years old). We created a short version (BFQ – Russian Brief; BFQ-RB), using data from a sample of 1128 adolescents (14-18 years) and then confirmed the factor structure on another subsample of 1087 adolescents. The psychometric properties of the newly created instrument – the BFQ-RB (Russian Brief) – were evaluated via item-level confirmatory factor analysis. We estimated three main models. In the first model, the selected items represented the Big Five factors. In the second model, the selected items represented ten correlated latent factors (facets). The third model was the second-order factor model fitted the data well, suggesting that the BFQ-RB enabled the estimation of both facets and factors. Our final instrument consists of 43 items, with each facet represented by 3-4 items and each second-order factor consisting of two facets, including the Lie scale