are youth differentially impacted by cannabis advertising? an ecological momentary assessment of demographic and psychosis risk factors in a canadian post-legalization context
abstract
the canadian government’s efforts to prevent cannabis use among youth are warranted, as
early cannabis use greatly increases risk of harm. although it is illegal, cannabis companies
continue to advertise their products to youth, potentially influencing cannabis expectancies and use
intentions. some youth groups may be more susceptible to advertising based on demographic risk
factors (urbanicity, gender, ethnicity, age) and psychosis risk. ecological momentary assessment
(ema) enables youth to track a range of phenomena, in vivo. using ema, this research describes:
how cannabis advertising is reaching youth, how such exposures may impact cannabis
expectancies and use intentions, and whether at risk (demographics, psychosis risk) youth groups
are differentially impacted by cannabis advertising exposures. over a nine-day ema protocol, 120
youth aged 14-18 completed demographic and psychosis-risk questionnaires, captured cannabis
advertising exposures, and rated their reactions (expectancies and use intentions) to exposure(s) and
during two daily randomly issued (control) prompts. altogether, most (n = 85; 70.83%; range 1-30)
youth reported being exposed to cannabis advertisements through various channels. using
multilevel models, this study also found that advertisement exposure increased cannabis use
intentions, while it did not increase cannabis expectancies. interaction effects for all demographic
predictors and psychosis risk on expectancies and use intentions were also nonsignificant. [...]