Research shows comorbidity between posttraumatic stress symptoms (PTSS) and externalizing problems among polyvictimized youth. However, the impact of polyvictimization on the longitudinal co-development of PTSS and distinct forms of externalizing problems remains unclear. Growth trajectory modeling was used to address this gap. At ages 8, 12, and 16, polyvictimization was measured using youth, caregiver, and official records; whereas youth self-reported PTSS and caregivers reported aggression and delinquency. Results demonstrate that changes in PTSS and each externalizing domain were independent. Further, polyvictimization and PTSS/aggression were only associated at concurrent time points. In contrast, polyvictimization and delinquency were generally associated at concurrent and distal time points, suggesting that polyvictimization may have a more enduring impact on youths' delinquent behaviors than other symptoms.

中文翻译：

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受害高风险青年的创伤后压力和外化问题的平行过程

研究表明，在遭受多重伤害的青年中，创伤后应激症状 (PTSS) 与外化问题之间存在共病。然而，多重受害对 PTSS 的纵向共同发展和不同形式的外化问题的影响仍不清楚。增长轨迹模型被用来解决这个差距。在 8 岁、12 岁和 16 岁时，使用青年、看护者和官方记录来衡量多重受害情况；而青少年自我报告的 PTSS 和照顾者报告的攻击性和犯罪行为。结果表明 PTSS 和每个外化域的变化是独立的。此外，多重受害和 PTSS/攻击性仅在并发时间点相关。相比之下，多重受害和犯罪通常在并发和远端时间点相关，