期刊
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
卷 114, 期 28, 页码 7313-7318出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1618923114
关键词
morality; emotion; politics; social networks; social media
资金
- Center for Social and Political Behavior at NYU
- NSF [1349089, SES-1248077, SES-1248077-001]
- NYU's Global Institute for Advanced Study (GIAS)
- Dean Thomas Carew's Research Investment Fund (RIF)
- Divn Of Social and Economic Sciences
- Direct For Social, Behav & Economic Scie [1248077] Funding Source: National Science Foundation
Political debate concerning moralized issues is increasingly common in online social networks. However, moral psychology has yet to incorporate the study of social networks to investigate processes by which some moral ideas spread more rapidly or broadly than others. Here, we show that the expression of moral emotion is key for the spread of moral and political ideas in online social networks, a process we call moral contagion. Using a large sample of social media communications about three polarizing moral/political issues (n = 563,312), we observed that the presence of moral-emotional words in messages increased their diffusion by a factor of 20% for each additional word. Furthermore, we found that moral contagion was bounded by group membership; moral-emotional language increased diffusion more strongly within liberal and conservative networks, and less between them. Our results highlight the importance of emotion in the social transmission of moral ideas and also demonstrate the utility of social network methods for studying morality. These findings offer insights into how people are exposed to moral and political ideas through social networks, thus expanding models of social influence and group polarization as people become increasingly immersed in social media networks.
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