@ARTICLE{Bagheri Sheykhangafshe, author = {Mohammadi, Arezoo and Aghamirmohammadali, Zahra and Shabahang, Reza and Bagheri Sheykhangafshe, Farzin and Savabi Niri, Vahid and }, title = {Effectiveness of Grit Program on Capacity of Sustaining Effort and Interest for Long-Term Purposes, Mental Toughness, and Self-Efficacy of Students: An Interventional Study}, volume = {9}, number = {4}, abstract ={Background and Purpose: Grit is the driver of success; without grit, talent couldn’t flourish. Grit is an essential ingredient of success in school, and its improvement can lead to academic achievement; hence the present study tries to strengthen the sustaining effort and interest for long-term purposes, mental toughness, and self-efficacy of students by using the grit program as an interventional study. Method: In this semi-experimental study (pretest-posttest with the control group), the study's statistical population included the middle school students of district one of Rasht City in the academic year of 2018-19. Using the convenience sampling method, 82 students (41 female students and 41 male students) aged between 13 and 15 years were selected and they were randomly assigned to the experimental (n = 41) and waiting for control (n = 41) groups. The program for developing and strengthening grit and mindset including stories, choice maps, peer tutoring, self-evaluation, and verbal self-instruction (Polirstok, 2017) was provided for the experimental group in 9 90-minute sessions (three days a week). The program was group-based and focused on increasing the capacity to sustain effort and interest in long-term goals. The research instruments included the Short Grit Scale (Duckworth & Quinn, 2009), Mental Toughness Questionnaire-18 items (Clough et al., 2002), and the General Self-Efficacy Scale (Schwarzer & Jerusalem, 1995). Data were analyzed by SPSS24 using multivariate covariance analysis (MANCOVA). Results: Based on the findings, the grit program enhanced the persistence of effort (ηp2 = 0.46), consistency of interest (ηp2 = 0.61), mental toughness (ηp2 = 0.46), and self-efficacy (ηp2 = 0.50) in students. The program on the consistency of interest (ηp2 = 0.61) was the most effective. Conclusion: Given the facilitating role of grit in students' academic performance and success in school, it is necessary to provide interventions to develop grit in students. Our results confirm the effectiveness of the grit program on the sustaining effort and interest for long-term purposes, mental toughness, and self-efficacy of students, which are recognized as critical factors in academic success. }, URL = {http://childmentalhealth.ir/article-1-1045-en.html}, eprint = {http://childmentalhealth.ir/article-1-1045-en.pdf}, journal = {Quarterly Journal of Child Mental Health}, doi = {10.61186/jcmh.9.4.4}, year = {2023} }