RT Article T1 Correlates and predictors of hyperactivity and aggression: a longitudinal study of parent-referred problem preschoolers JF The journal of child psychology and psychiatry VO 27 IS 4 SP 217 OP 217 A1 Campbell, Susan B. 1956- LA English YR 1986 UL https://krimdok.uni-tuebingen.de/Record/1639486801 K1 Aufmerksamkeitsdefizit K1 Hyperaktivitätsstörung K1 Aggressionen K1 Langzeitstudien