INTRODUCTION: The high rate of substance use highlights the need to intervene in the initial use prevention of smoking tobacco. The aim was to determine the efficacy of anti-smoking messages to motivate smoking cessation.

METHODS: It was hypothesised that the messages would reduce the frequency of smoking. The influence of the messages on the intention to smoke, negative emotions, perceived self-efficacy, and health behaviour was also measured. Relevant reliable and valid questionnaires were used to collect data for this experimental study.

RESULTS: In this study mean differences were...