RT Article T1 Childhood aggression, peer status, and social class as predictors of delinquency JF Psychological reports VO 70 IS 1 SP 31 OP 34 A1 Roff, J. D. LA English YR 1992 UL https://krimdok.uni-tuebingen.de/Record/1640058834 K1 Jugendliche K1 Delinquenzprognose K1 Aggressive Kinder