title: Social Norms Shift Preferences for Healthy and Unhealthy Foods.
abstract: This research investigated whether people change their food preferences and eating behavior in response to health-based social norms. One hundred twenty participants rated a series of healthy and unhealthy food images. After each rating, participants sometimes viewed a rating that ostensibly represented the average rating of previous participants. In fact, these average ratings were manipulated to convey a particular social norm. Participants either saw average ratings that favored healthy foods, favored unhealthy foods, or did not see any average ratings. Participants then re-rated those same food images after approximately ten minutes and again three days later. After the norm manipulation, participants were given the chance to take as many M&Ms as they wanted. Participants exposed to a healthy social norm consistently reported lower preferences for unhealthy foods as compared to participants in the other two conditions. This preference difference persisted three days after the social norm manipulation. However, health-based social norm manipulations did not influence the amount of M&Ms participants took. Although health-based social norm manipulations can influence stated food preferences, in this case they did not influence subsequent eating behavior.
authors.affiliation: Department of Psychological and Brain Sciences, Dartmouth, Hanover, New Hampshire, United States of America.
authors.forename: Emma M
authors.initials: EM
authors.lastname: Templeton
authors.affiliation: Health Sciences Program, California State University, East Bay, Hayward, California, United States of America.
authors.forename: Michael V
authors.initials: MV
authors.lastname: Stanton
authors.affiliation: Department of Psychology, Stanford University, Stanford, California, United States of America.
authors.forename: Jamil
authors.initials: J
authors.lastname: Zaki
mesh_terms: D000293:Adolescent; D000328:Adult; D005247:Feeding Behavior; D005260:Female; D005502:Food; D005518:Food Preferences; D006801:Humans; D008297:Male; D010465:Perception; D066262:Social Norms; D011795:Surveys and Questionnaires; D055815:Young Adult