Tailored anti-cannabis messages worked better than generic ones for at-risk teens

In Study 1 (N=808), at-risk adolescents who perceived cannabis use as normative showed lowest usage intentions after receiving a tailored gain-framed message. In Study 2 (N=391), at-risk teens with normative beliefs and pro-cannabis attitudes who received the tailored gain-framed communication showed decreased cannabis attitude certainty and lower usage intentions 2 months later.

Two studies with cannabis-abstinent middle and high school students ages 11-16. Study 1 compared gain- and loss-framed messages tailored to normative perceptions. Study 2 used a sequential approach: first destabilizing anti-message attitudes through rebuttal feedback, then delivering tailored vs. non-tailored messages. Follow-up at 2 months.

Most cannabis prevention campaigns fail because they use one-size-fits-all messaging. This study demonstrates that tailoring messages to individual beliefs about peer norms and using sequential persuasion strategies can improve effectiveness for the hardest-to-reach youth.

The approach of first weakening resistance and then delivering personalized messages represents a more sophisticated prevention strategy that could be scaled through digital platforms where real-time tailoring is feasible.

Only cannabis-abstinent students were included, so effects on actual users are unknown. Florida-based samples may not generalize nationally. Self-reported intentions may not translate to behavior. 2-month follow-up is relatively short.