3.4. Procedures
The project was granted ethical approval from Universiti Putra Malaysia Ethics Committee for Research Involving Human Subjects (JKEUPM), with the reference number JKEUPM-2020-432. The researcher recruited participants and obtained prior informed consent. As the study posed minimal risks to the participants, a waiver of parental permission was granted. The adolescents were informed that participation was entirely voluntary and that they had the right to consent or refuse. To participate, they provided personal details, such as the participant’s name, birth date, e-mail address(es), and mobile number (optional), onto a secure webpage. Random selection assigned participants to intervention or control conditions. Both study groups completed the program in the order of post-test followed by 3-month follow-up; they were reminded about these through various means of communication, namely postcards, e-mails, and telephone calls. Finally, online gifts were distributed to the participants for pre-test, post-test, and 3-month follow-up, respectively.