Journal
NATURE
Volume 526, Issue 7573, Pages 426-+Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/nature15392
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Funding
- Japan Society for the Promotion of Science (JSPS)
- Robert Wood Johnson Foundation
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Humans prefer relatively equal distributions of resources(1-5), yet societies have varying degrees of economic inequality(6). To investigate some of the possible determinants and consequences of inequality, here we perform experiments involving a networked public goods game in which subjects interact and gain or lose wealth. Subjects (n =1,462) were randomly assigned to have higher or lower initial endowments, and were embedded within social networks with three levels of economic inequality (Gini coefficient=0.0, 0.2, and 0.4). In addition, we manipulated the visibility of the wealth of network neighbours. We show that wealth visibility facilitates the downstream consequences of initial inequality-in initially more unequal situations, wealth visibility leads to greater inequality than when wealth is invisible. This result reflects a heterogeneous response to visibility in richer versus poorer subjects. We also find that making wealth visible has adverse welfare consequences, yielding lower levels of overall cooperation, inter-connectedness, and wealth. High initial levels of economic inequality alone, however, have relatively few deleterious welfare effects.
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