TY JOUR TI Formation of cognitive competencies in adolescents based on the relationship between the model and the original KW cognitive competencies KW teenagers KW correlation between model and original KW methods KW cognitive activity KW additional education JO Journal of Pedagogical Studies AU Ovchinnikova, A.Z. AU Klenikov, S.S. PY 2026 IS 11 PB INFRA-M Academic Publishing LLC.