title: Poverty, inequality, and increased consumption of high calorie food: Experimental evidence for a causal link.
abstract: Rising obesity represents a serious, global problem. It is now well established that obesity is associated with poverty and wealth inequality, suggesting that these factors may promote caloric intake. Whereas previous work has examined these links from an epidemiological perspective, the current paper examined them experimentally. In Study 1 we found that people experimentally induced to view themselves as poor (v. wealthy) exhibited increased calorie intake. In Study 2, participants who believed that they were poorer or wealthier than their interaction partners exhibited higher levels of anxiety compared to those in an equal partners condition; this anxiety in turn led to increased calorie consumption for people who had a strong need to belong. The findings provide causal evidence for the poverty-intake and inequality-intake links. Further, we identify social anxiety and a strong need to belong as important social psychological factors linking inequality to increased calorie intake.
authors.affiliation: University of St. Andrews, United Kingdom; Université Libre de Bruxelles, Belgium. Electronic address: bab20@st-andrews.ac.uk.
authors.forename: Boyka
authors.initials: B
authors.lastname: Bratanova
authors.affiliation: University of Edinburgh, United Kingdom.
authors.forename: Steve
authors.initials: S
authors.lastname: Loughnan
authors.affiliation: Université Libre de Bruxelles, Belgium.
authors.forename: Olivier
authors.initials: O
authors.lastname: Klein
authors.affiliation: Université Libre de Bruxelles, Belgium.
authors.forename: Almudena
authors.initials: A
authors.lastname: Claassen
authors.affiliation: Centre for Ethical Leadership, University of Melbourne, Australia.
authors.forename: Robert
authors.initials: R
authors.lastname: Wood
mesh_terms: D000293:Adolescent; D000328:Adult; D001007:Anxiety / Q000150:complications / Q000191:economics / Q000453:epidemiology* / Q000523:psychology; D001069:Appetite Regulation; D015984:Causality; D000072001:Diet, Healthy / Q000191:economics / Q000523:psychology*; D002149:Energy Intake; D005518:Food Preferences / Q000523:psychology; D054624:Health Status Disparities; D006801:Humans; D008960:Models, Psychological; D009765:Obesity / Q000150:complications / Q000191:economics / Q000453:epidemiology* / Q000523:psychology; D010349:Patient Compliance / Q000523:psychology*; D011203:Poverty / Q000523:psychology; D012929:Psychological Distance; D011897:Random Allocation; D012924:Social Conditions / Q000191:economics; D006113:United Kingdom / Q000453:epidemiology; D055815:Young Adult
keywords: Anxiety; Food; Inequality; Obesity; Poverty