Abstract

• A model of mental health, dual factor model, imagines the status of mental health as a mixture of psychopathology and subjective well-being. To make lower secondary school students not only decrease their psychopathology in which externalizing and internalizing behavior but also increase subjective well-being including negative and positive affect and life satisfaction. Thus, to examine the effect of positive psychology intervention (PPI) program on students’ subjective well-being and psychopathology required. Therefore, this study was conducted as an investigation of the effectiveness of positive psychology intervention (PPI) on subjective wellbeing and psychopathology of grade 6 students. In this study, the equal number of boys and girls in Grade 6 (76 students) and 6 teachers in Grade 6 are participated. Pre-test post-test control group design and purposive sampling method were used. Experimental and control groups were assigned equally based on the results of pre-test. To improve students’ subjective well-being and to reduce psychopathology, the PPI was used in the experimental group. Results showed that participants in the experimental group showed significant lower level of psychopathology (the behaviors of externalizing and internalizing) and negative affect and higher levels of life satisfaction and positive affect than control group. Thus, it can be said that subjective well-being and psychopathology of lower secondary school students can be promoted and reduced by PPI program.