RT Article T1 Validation of hyperactive, aggressive, and mixed hyperactive/aggressive childhood disorders: a research note JF The journal of child psychology and psychiatry VO 31 IS 3 SP 455 OP 459 A2 Pascualvaca, Daisy M. A2 Wolf, Lorraine E. A2 Newcorn, Jeffrey H. A2 Healey, Jane M. LA English YR 1990 UL https://krimdok.uni-tuebingen.de/Record/1640036199 K1 Hyperaktivität K1 Verhaltensstörung K1 Aggressivität