Weak ties strengthen anger contagion in social media

• URL: http://arxiv.org/abs/2005.01924v1
• Date: Tue, 5 May 2020 02:57:51 GMT
• Title: Weak ties strengthen anger contagion in social media
• Authors: Rui Fan, Ke Xu and Jichang Zhao
• Abstract summary: Using the analysis of millions of tweets in Weibo, we find that anger travels easily along weaker ties than joy. This is the first time that quantitative long-term evidence has been presented that reveals a difference in the mechanism by which joy and anger are disseminated.
• Score: 12.017879121725274
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Increasing evidence suggests that, similar to face-to-face communications, human emotions also spread in online social media. However, the mechanisms underlying this emotion contagion, for example, whether different feelings spread in unlikely ways or how the spread of emotions relates to the social network, is rarely investigated. Indeed, because of high costs and spatio-temporal limitations, explorations of this topic are challenging using conventional questionnaires or controlled experiments. Because they are collection points for natural affective responses of massive individuals, online social media sites offer an ideal proxy for tackling this issue from the perspective of computational social science. In this paper, based on the analysis of millions of tweets in Weibo, surprisingly, we find that anger travels easily along weaker ties than joy, meaning that it can infiltrate different communities and break free of local traps because strangers share such content more often. Through a simple diffusion model, we reveal that weaker ties speed up anger by applying both propagation velocity and coverage metrics. To the best of our knowledge, this is the first time that quantitative long-term evidence has been presented that reveals a difference in the mechanism by which joy and anger are disseminated. With the extensive proliferation of weak ties in booming social media, our results imply that the contagion of anger could be profoundly strengthened to globalize its negative impact.

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