“…However, although the online exposure context, sample focus, stimuli tested, measures used, and parental and adolescent consents (to meet IRB requirements) are consistent with prior tobacco warning reseach,15 22 they could serve to limit the generalisability of findings. There certainly are other warning themes to study beyond mouth cancer, as well as for other countries, smoking frequencies/situations46 (eg, progression from experimenters to any 30-day use to daily smokers), plain pack variations,33 brand variant descriptors (eg, colour, flavour, filter),49 and other brands and tobacco products (eg, e-cigarettes, hookah, cigars, cigarillos, smokeless tobacco) 50. Also, mediation analysis may reveal interesting pathways to quitting from the plain packs and GHWs.…”