This study is designed as a parallel-group randomized controlled trial to evaluate the effectiveness of a sustainable environmentally friendly nutrition educational intervention program developed based on the principles of Social Cognitive Theory. The intervention aims to improve sustainable environmentally friendly nutrition behaviors, nutritional attitudes, and nutrition self-efficacy among adolescents. Eligible participants will be randomly assigned to either an intervention group or a control group using a computerized simple randomization procedure conducted by an independent researcher. Allocation concealment will be ensured through participant coding, and data analysis will be performed by an independent biostatistician blinded to group assignments. The intervention group will participate in a structured six-week educational program, consisting of one session per week. Each session will last approximately 40 minutes and will focus on a specific module addressing the relationship between climate change, environmental sustainability, and nutrition. Program content is grounded in Social Cognitive Theory, emphasizing observational learning, self-regulation, outcome expectations, and self-efficacy enhancement. Educational methods will include interactive presentations, group discussions, games, and activity-based learning supported by visual and audio materials to promote engagement and long-term behavioral change. To reinforce learning and facilitate behavior maintenance, supplementary reinforcement messages will be delivered throughout the intervention period. Communication with participants and their parents will be maintained via digital messaging platforms to support adherence and engagement. The control group will continue their routine school curriculum without receiving any nutrition-related educational intervention during the study period. Outcome data will be collected at four time points: baseline (pre-intervention), immediately after completion of the six-week program (post-intervention), and at one-month and three-month follow-up assessments. Data collection is expected to take approximately 25 minutes at each assessment point. The follow-up assessments are intended to evaluate the sustainability of behavior change over time. The intervention will be implemented during the fall semester of the 2025-2026 academic year following the completion of ethical approval and institutional permissions.
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Child Nutrition Self-Efficacy Scale
Timeframe: Pre-intervention (week 1), post-intervention (week 6), follow-up time (at the end of month 1 and 3)
"Sustainable Eco-Friendly Nutrition Scale
Timeframe: Pre-intervention (week 1), post-intervention (week 6), follow-up time (at the end of month 1 and 3)
Nutrition Attitude Subscale
Timeframe: Pre-intervention (week 1), post-intervention (week 6), follow-up time (at the end of month 1 and 3)