<![CDATA[Background:HIV/AIDS prevention education for adolescents requires approaches that are accurate, interactive, and appropriate to their learning characteristics. Objective: This study aimed to develop a locally adapted Emo Demo-based education method containing HIV/AIDS prevention content and to conduct a preliminary evaluation through feasibility, acceptance, and post-intervention knowledge and attitude outcomes. Methods: An exploratory sequential mixed-methods design was conducted at SMA Negeri 15 Padang. The qualitative phase used formative interviews with two students, a school health unit teacher, and an HIV programme coordinator to identify information needs and audience characteristics. Media development followed the Behaviour Centred Design (BCD) stages of Assess, Build, Create, Deliver, and Evaluate, adapted from the thesis procedure. The package was reviewed by content, design, and language experts and tested for acceptance with 10 students before implementation. The quantitative phase used a posttest-only, non-equivalent control-group design involving 61 Grade XI students, with 29 students in the intervention group and 32 in the control group. Knowledge was measured using 24 true-false items and attitudes using 10 Likert-scale statements. Posttest distributions were compared using the Mann-Whitney U test. Expert feasibility averaged 92%, while student acceptance was 96.2%. Results: The intervention group had higher median knowledge scores than the control group (21.00 vs 16.00) and higher median attitude scores (42.00 vs 34.50); both between-group differences were statistically significant (p = 0.001). Conclusion: These findings support the feasibility and promising educational value of the developed Emo Demo-based method. However, because the design used purposive group selection, no baseline measurement, and no direct assessment of behaviour or emotional response, the findings should be interpreted as preliminary evidence for the developed educational method rather than proof of behavioural effectiveness.]]>
