RT Article T1 Cognitive development in low attention, hyperactive, and aggressive 6-year-old through 11-year-old children JF Journal of the American Academy of Child and Adolescent Psychiatry VO 26 IS 2 SP 214 OP 218 A1 Goldstein, H. S. LA English YR 1987 UL https://krimdok.uni-tuebingen.de/Record/1639486593 K1 Aufmerksamkeitsdefizit K1 Hyperaktivitätsstörung K1 Aggressionen K1 Kinder