The purpose of this study is to investigate the effect of the Multi-Component Positive Psychology Intervention (MPPI) on adolescents’ risky behaviors and psychological flexibility. The study utilized a convergent parallel design, a mixed-method research design. While the quantitative phase included a 2 × 3 factorial design, the qualitative phase included a descriptive phenomenology approach. The study group consisted of 26 adolescents (experimental group = 13, control group = 13) selected using the simultaneous/nested sampling method (Ranj_age=14–17, M_age=15.35, SD_age=1.09). While the adolescents in the experimental group received a ten-week MPPI program online, the adolescents in the control group were administered no interventions. Quantitative data were collected through the Risky Behavior Scale and the Multidimensional Psychological Flexibility Inventory-Short Form. Qualitative data were collected through individual interviews conducted with the adolescents after the experimental procedure. The quantitative results showed that MPPI enabled a significant decrease in adolescents’ antisocial behaviors, suicide tendency, risky behaviors total and psychological inflexibility scores and an increase in their psychological flexibility scores. This effect was found to continue in the follow-up measurements taken three months later. On the other hand, MPPI was found to have no significant effects on reducing adolescents’ alcohol use, smoking, nutrition habits, and school dropout scores. Qualitative findings indicated the positive effects of MPPI on decreasing adolescents’ risky behaviors and increasing their psychological flexibility levels. Findings from quantitative and qualitative data assessing the effectiveness of MPPI were found to support each other.

本研究的目的是调查多成分积极心理学干预 （MPPI） 对青少年危险行为和心理灵活性的影响。该研究采用了收敛平行设计，即混合方法研究设计。定量阶段包括 2 × 3 因子设计，而定性阶段包括描述性现象学方法。研究组由 26 名青少年 （实验组 = 13，对照组 = 13） 组成，使用同步/嵌套抽样方法选择 （Ranj_年龄 = 14-17，M_年龄 = 15.35，SD_年龄 = 1.09）。虽然实验组的青少年在线接受了为期 10 周的 MPPI 计划，但对照组的青少年没有接受任何干预。通过风险行为量表和多维心理灵活性量表-简表收集定量数据。通过在实验程序后对青少年进行个体访谈来收集定性数据。定量结果表明，MPPI 使青少年的反社会行为、自杀倾向、危险行为总分和心理不灵活性评分显著降低，并提高了他们的心理灵活性评分。发现这种影响在 3 个月后进行的随访测量中持续存在。另一方面，发现 MPPI 对减少青少年的饮酒、吸烟、营养习惯和辍学分数没有显着影响。定性研究结果表明，MPPI 对减少青少年的危险行为和提高他们的心理灵活性水平有积极影响。 评估 MPPI 有效性的定量和定性数据结果发现相互支持。