Aug. 25, 2008 Public health campaigns intended to reduce unhealthy behaviors like binge drinking and eating junk food often focus on the risks of those behaviors. But a new study in the Journal of Consumer Research suggests a relatively simple but surprisingly effective strategy to improve consumer health.
Authors Jonah Berger (University of Pennsylvania) and Lindsay Rand (Stanford University) found that linking a risky behavior with an "outgroup" (a group that the targeted audience doesn't want to be confused with) caused participants to reduce unhealthy behaviors.
"We suggest that public health campaigns will be more successful if they attend to how behaviors act as markers or signals of identity," the authors write.
The studies began by identifying groups of people who study participants liked, but with whom the participants would not want to be confused—"outgroups." In the first study, the participants were undergraduates and the "outgroup" was graduate students. When participants were led to believe that graduate students consumed more junk food, they chose 28% fewer junk-food items than participants who thought their group ate more junk food.
In another study, researchers placed fliers in freshman dormitories on a college campus. In one dorm, the fliers emphasized the health risks of binge drinking. In another dorm, the fliers linked binge drinking to graduate students. Participants in the dorm with the second flier consumed at least 50 percent less alcohol than those who saw the health risk fliers.
In a third study, students on their way to a campus eatery were surveyed about perceptions of the media. A control group read an article about politics and pop culture, and a second group read an article associating junk-food eating with online gamers (an "outgroup"). When research assistants observed the two groups ordering food, they found that the group who had read the article about online gamers made healthier choices.
These studies highlight the importance of identity in health behavior and suggest promising directions for future health promotion appeals, the authors believe. "Decisions are not only based on risks and benefits, but also the identity that a given choice communicates to others. Consequently, shifting perceptions of the identity associated with a risky behavior can help make better health a reality."
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- Berger et al. Shifting Signals to Help Health: Using Identity Signaling to Reduce Risky Health Behaviors. Journal of Consumer Research, 2008; 0 (0): 080324102158216 DOI: 10.1086/587632
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