Hiding the tobacco power wall reduces cigarette smoking risk in adolescents: using an experimental convenience store to assess tobacco regulatory options at retail point-of-sale.

OBJECTIVES: This experiment tested whether changing the location or visibility of the tobacco power wall in a life sized replica of a convenience store had any effect on adolescents' susceptibility to future cigarette smoking. METHODS: The study was conducted in the RAND StoreLab (RSL), a life sized replica of a convenience store that was developed to experimentally evaluate how changing aspects of tobacco advertising displays in retail point-of-sale environments influences tobacco use risk and behaviour. A randomised, between-subjects experimental design with three conditions that varied the location or visibility of the tobacco power wall within the RSL was used. The conditions were: cashier (the tobacco power wall was located in its typical position behind the cash register counter); sidewall (the tobacco power wall was located on a sidewall away from the cash register); or hidden (the tobacco power wall was located behind the cashier but was hidden behind an opaque wall). The sample included 241 adolescents. RESULTS: Hiding the tobacco power wall significantly reduced adolescents' susceptibility to future cigarette smoking compared to leaving it exposed (ie, the cashier condition; p=0.02). Locating the tobacco power wall on a sidewall away from the cashier had no effect on future cigarette smoking susceptibility compared to the cashier condition (p=0.80). CONCLUSIONS: Hiding the tobacco power wall at retail point-of-sale locations is a strong regulatory option for reducing the impact of the retail environment on cigarette smoking risk in adolescents.

How do tobacco power walls influence adolescents? A study of mediating mechanisms.

OBJECTIVES: Tobacco power walls display hundreds of tobacco products and are known to be a key part of the impact of point-of-sale tobacco advertising on risk for smoking in adolescents. The current study examined factors that are hypothesized to mediate the effect of tobacco power wall exposure on adolescents' susceptibility for smoking in the future. METHOD: Participants (N = 148) aged 11-17 years were invited to shop in the RAND StoreLab, a life-sized replica of a convenience store. They were randomized to 1 of 2 conditions: one in which the power wall was located in its typical position behind the cashier and the other in which it was hidden behind an opaque wall. Participants shopped in the RAND StoreLab and then completed measures of susceptibility for smoking in the future, perceived smoking norms, and perceived accessibility of cigarettes. Participants' movements in the store were electronically tracked. RESULTS: Having the tobacco power wall behind the cashier increased adolescents' susceptibility for smoking in the future by 14.3% (total effect) compared with when the power wall was hidden (p = .01), and 14% of this effect was mediated by participants' perceived smoking norms. Time spent in front of the cashier and perceived accessibility of cigarettes did not play a role in the association between study condition and susceptibility for smoking in the future. CONCLUSIONS: The tobacco power wall increases adolescents' smoking risk, and this effect is partly explained by the effect of the power wall on adolescents' perceptions of how normative smoking is. (PsycINFO Database Record