The Effect of Online Multi-Component Positive Psychology Intervention on Adolescents’ Risky Behaviors and Psychological Flexibility: A Mixed Method Study

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.