Opinion formation on dynamic networks: identifying conditions for the emergence of partisan echo chambers.
Opinion formation on dynamic networks: identifying conditions for the emergence of partisan echo chambers.
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DOI：
10.1098/rsos.181122
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发表时间：
2018-10
影响因子：
3.5
通讯作者：
Fu F
中科院分区：
文献类型：
--
作者：
Evans T;Fu F
现代政治互动的特点是强烈的党派性，对跨党派的信息共享和协议缺乏兴趣。目前尚不清楚这种党派回声室是如何产生的，以及它们如何与舆论形成共同演变。在这里，我们通过共同进化博弈的透镜来探索这些结构的出现。在我们的模型中，一个人的回报是由他们的意见的大小，他们与社会邻居的一致程度以及拥有社会联系的好处共同决定的。每个人都可以同时调整自己的观点和社会关系的权重。我们提出并验证了党派回声室出现的条件，其特点是从有共识的凝聚力社区过渡到有分歧意见的分裂网络。此外，我们将我们的模型应用于美国众议院几十年来的投票记录，以了解近年来潜在的心理和社会因素对党派偏见的影响。我们的工作有助于阐明今天的分裂是如何形成的，以及如何在各种政治和社会问题上实现凝聚力和团结。
Modern political interaction is characterized by strong partisanship and a lack of interest in information sharing and agreement across party lines. It remains largely unclear how such partisan echo chambers arise and how they coevolve with opinion formation. Here, we explore the emergence of these structures through the lens of coevolutionary games. In our model, the payoff of an individual is determined jointly by the magnitude of their opinion, their degree of conformity with their social neighbours and the benefit of having social connections. Each individual can simultaneously adjust their opinion and the weights of their social connections. We present and validate the conditions for the emergence of partisan echo chambers, characterizing the transition from cohesive communities with a consensus to divisive networks with splitting opinions. Moreover, we apply our model to voting records of the US House of Representatives over a timespan of decades to understand the influence of underlying psychological and social factors on increasing partisanship in recent years. Our work helps elucidate how the division of today has come to be and how cohesion and unity could otherwise be attained on a variety of political and social issues.
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