KMAN Publication Inc. (KMANPUB) Journal of Adolescent and Youth Psychological Studies (JAYPS) 2981-2526 5 Serial Number 19 2024 03 10 Effectiveness of a Gratitude Journal Intervention on Well-Being and Academic Achievement Effectiveness of a Gratitude Journal Intervention on Well-Being and Academic Achievement 170 179 10.61838/kman.jayps.5.3.18 EN Journal Article 2023 12 25 <table> <tbody> <tr> <td> <p><strong>Objective:</strong> This study aimed to examine the effectiveness of a structured gratitude journal intervention on enhancing well-being and academic achievement among university students.</p> <p><strong>Methods and Materials: </strong>A randomized controlled trial was conducted with 30 undergraduate students from Greece, who were randomly assigned to either an experimental group (n = 15) receiving a ten-session gratitude journaling intervention over five weeks or a control group (n = 15) receiving no intervention. Assessments were conducted at three time points: pretest, posttest, and five-month follow-up. Well-being was measured using the Ryff Scales of Psychological Well-Being (RPWB), and academic achievement was assessed via self-reported Grade Point Average (GPA), cross-verified with institutional records. Repeated measures ANOVA and Bonferroni post-hoc tests were used to analyze the data using SPSS-27.</p> <p><strong>Findings: </strong>The results indicated significant improvements in well-being and academic achievement in the experimental group compared to the control group. The mean well-being score in the experimental group increased from 158.42 (SD = 12.35) at pretest to 172.68 (SD = 11.14) at posttest and remained high at follow-up (M = 171.47, SD = 11.92), while the control group showed no meaningful change. Academic achievement also improved significantly in the experimental group, with GPA rising from 2.89 (SD = 0.24) at pretest to 3.18 (SD = 0.21) at follow-up. Repeated measures ANOVA revealed significant time × group interactions for both variables (p &lt; .001), and Bonferroni post-hoc tests confirmed that gains were maintained over time.</p> <p><strong>Conclusion: </strong>The findings suggest that gratitude journaling is an effective and sustainable intervention for improving psychological well-being and academic performance in university students, with benefits persisting up to five months after the intervention.</p> </td> </tr> </tbody> </table> https://journals.kmanpub.com/index.php/jayps/article/download/3855/6468