The purpose of the study presented in the article is to adapt and validate the CYBA questionnaire (Cyber-aggression Questionnaire for Adolescents, D. ?lvarez-Garc?a et al.) on a Russian sample. Validation of the Russian version of the questionnaire included the following psychometric procedures: assessment of obvious and substantive validity (method of expert estimates with calculation of Kendall concordance coefficient), refinement of the structure (exploratory factor analysis with equimax rotation), verification of internal consistency (calculation of ?
