This qualitative study examines the possible long-term impact of multisystemic therapy (MST) as young people experience the transition from adolescence to young adulthood. MST is an intensive intervention aimed at reducing antisocial behavior among young people. Interviews were conducted with 32 young people aged 16 to 22 years at their 48-month follow-up as part of the Systemic Therapy for At-Risk Teens (START) evaluation trial in the United Kingdom. Sixteen participants had received MST while 16 received management as usual (MAU). Interviews addressed participants’ current life experiences and were analyzed with interpretative phenomenological analysis (IPA). The inductive qualitative analysis data were transformed into numerical data. Interview extracts were coded as either forward-looking and hopeful (“mature”) or static and frustrated (“stuck”). Among males, significantly more mature outcomes were found among participants who had received MST compared with MAU. No differences were seen between the female groups. A detailed qualitative commentary shows how the constructs, mature and stuck, are manifest across the four domains. The findings suggest that working with an MST therapist during adolescence helped young men cultivate more mature, forward-looking viewpoints and life activities 4 years later when transitioning into adulthood. Findings are discussed in relation to relevant theory and practical applications.

这项定性研究考察了多系统疗法 (MST) 在年轻人经历从青春期到青年期的过渡时可能产生的长期影响。MST 是一项旨在减少年轻人反社会行为的强化干预措施。作为英国高危青少年全身治疗 (START) 评估试验的一部分，在 48 个月的随访中对 32 名 16 至 22 岁的年轻人进行了访谈。16 名参与者接受了 MST，而 16 名参与者接受了照常管理 (MAU)。访谈涉及参与者当前的生活经历，并使用解释性现象学分析 (IPA) 进行分析。归纳定性分析数据转化为数值数据。采访摘录被编码为前瞻性和充满希望（“成熟”）或静态和沮丧（“卡住”）。在男性中，与 MAU 相比，在接受 MST 的参与者中发现了更成熟的结果。女性组之间没有发现差异。详细的定性评论显示了成熟和卡住的结构是如何在四个领域中体现出来的。研究结果表明，在青春期与 MST 治疗师合作有助于年轻男性在 4 年后过渡到成年期时培养更成熟、更具前瞻性的观点和生活活动。研究结果就相关理论和实际应用进行了讨论。女性组之间没有发现差异。详细的定性评论显示了成熟和卡住的结构是如何在四个领域中体现出来的。研究结果表明，在青春期与 MST 治疗师合作有助于年轻男性在 4 年后过渡到成年期时培养更成熟、更具前瞻性的观点和生活活动。研究结果就相关理论和实际应用进行了讨论。女性组之间没有发现差异。详细的定性评论显示了成熟和卡住的结构是如何在四个领域中体现出来的。研究结果表明，在青春期与 MST 治疗师合作有助于年轻男性在 4 年后过渡到成年期时培养更成熟、更具前瞻性的观点和生活活动。研究结果就相关理论和实际应用进行了讨论。