The impact of self-affirmation on senior students’ happiness: An online-based experimental study

This research aims to prove the effect of the form of the self-affirmation intervention, a form of positive psychology intervention, on the happiness of senior-level students. An online-based experimental design of pre-test and post-test with self-affirmation intervention in the form of writing. The 180 participants were dividing into treatment and control groups with the final 154 participants joining the study. the analysis of variance (ANOVA) with ONE-WAY ANOVA testing was carried out. The results showed the self-affirmation intervention statistically significantly affected the happiness of senior students.