RT Article T1 How early is too early? Identification of elevated, persistent problem behavior in childhood JF Prevention science VO 21 IS 4 SP 445 OP 455 A1 Augustyn, Megan A1 Henry, Kimberly L. A1 Thornberry, Terence P. A1 Philippi, Pilar A1 Loughran, Thomas A2 Henry, Kimberly L. A2 Thornberry, Terence P. A2 Philippi, Pilar A2 Loughran, Thomas LA English YR 2020 UL https://krimdok.uni-tuebingen.de/Record/1912577364 DO 10.1007/s11121-019-01060-y