The COVID-19 pandemic has severely affected people's health, daily routine, and behaviors. Its effects have been most pronounced for the youngest and oldest generations. Their daily lives have completely changed throughout the pandemic. Self-transcendence values and positive orientation could facilitate optimal adjustment to this situation by promoting prosociality. The present study aimed to discover if applying a new, web-based intervention could activate self-transcendence values in a group of Italian adolescents, fostering COVID-19 prosocial behaviors while also considering the role of positive orientation. The study adopted a longitudinal, web-based, and quasi-experimental design. One hundred and forty adolescents between 15 and 19 years of age were involved in the study two times (T1-T2). Participants were assigned to an intervention or control group. All participants completed the self-transcendence subscale extracted from the 21-item Portrait Values Questionnaire, the Positive Orientation Scale, and the COVID-19 Prosocial Experiences Scale. The results showed that adolescents' self-transcendence values and positive orientation were positively associated with COVID-19 prosociality. However, the relationship between self-transcendence values and COVID-19 prosocial behaviors was significantly more robust in the intervention group. Finally, a three-way interaction (self-transcendence*group*positive orientation) emerged as significant. For the intervention group, the effect of self-transcendence values on COVID-19 prosocial behaviors was significant only for adolescents who reported a strong positive orientation. Limitations of the study, future research developments, and practical implications are discussed.
Keywords: COVID-19; Self-transcendence values; positive orientation; prosocial behaviors; web-based intervention.