RT Article T1 Study group report on the impact of television violence on adolescents JF Journal of adolescent health VO 11 IS 1 SP 45 OP 49 A1 Hoberman, Harry Mark 1955- LA English YR 1990 UL https://krimdok.uni-tuebingen.de/Record/1639284109 K1 Medienwirkung K1 Mediengewalt K1 Jugendliche