TV exposure, attitudes about targeted food ads and brands, and unhealthy consumption by adolescents: Modeling a hierarchical relationship

Abstract

Public health experts raise concerns that extensive exposure to advertising for calorie-dense nutrient-poor food negatively influences adolescents' diets, but few studies have explored how food advertising affects children over age 12. This study examines adolescents' attitudes about highly targeted unhealthy food brands and assesses the hierarchical relationship between TV exposure, intermediary measures of advertising effects, and healthy and unhealthy food consumption. A cross-sectional online survey of 1566 adolescents (13–17 years) measured TV exposure, attitudes about eight highly advertised teen-targeted food brands and their advertising, and unhealthy and healthy food consumption. A theory-based structural equation model (SEM) tested hypothesized paths from TV exposure to unhealthy food consumption, with attitudes about teen-targeted TV ads and brands as intermediary variables, controlling for healthy food consumption and demographic characteristics. Participants reported high liking of targeted-brand advertising (M = 4.05/5.0, SD = 0.65), strong perceptions that the ads were targeted to someone like them (M = 4.07/5.0, SD = 0.66), positive brand attitudes (M = 4.07/5.0, SD = 0.56), brand popularity (M = 4.01/5.0, SD = 0.63), and consuming the brands a few times in the past month on average. As hypothesized, the SEM supported significant positive paths from TV exposure to ad attitudes (β = 0.50, 95% CI = 0.40–0.60) to brand attitudes (β = 0.90, 95% CI = 0.87–0.92) to unhealthy food consumption (β = 0.41, 95% CI = 0.32–0.50). Contrary to expectations, healthy consumption was positively associated with both brand attitudes (β = 0.11, 95% CI = 0.04–0.18) and unhealthy consumption (β = 0.42, 95% CI = 0.33–0.51). These results further public health concerns about the potential impact of adolescents’ exposure to unhealthy food advertising on brand consumption and unhealthy food consumption more broadly. They also support marketing theories that ad liking and perceived targeting may increase the influence of ad exposure on brand attitudes and unhealthy consumption.