Intervention Module
The newly developed intervention module, SIM, used 3 constructs of PWM, including attitude, perceived norms, and prototype perceptions. It was developed in Malay, which is the local native language. The module consisted of information regarding the definition of sexting, the negative impact of sexting, the prevalence of sexting, people’s opinions about sexting, and information regarding the negative characters of a sexter (person who sexts). In addition, behavior change techniques were also incorporated in the module, including the use of prompts to identify risky situations and barriers as well as the provision of specific instruction to prevent sexting, to enhance the effectiveness of the intervention [