Ideological biases in social sharing of online information about climate change.
Ideological biases in social sharing of online information about climate change.
复制标题
关于气候变化的在线信息社交共享的意识形态偏见。
DOI：
10.1371/journal.pone.0250656
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发表时间：
2021
期刊：
影响因子：
3.7
通讯作者：
Williams HTP
中科院分区：
文献类型：
--
作者：
Cann TJB;Weaver IS;Williams HTP
接触媒体内容是围绕气候变化形成舆论的一个重要组成部分。本研究的重点是Twitter等在线社交媒体，它为研究与气候变化相关的公众参与和数字媒体传播提供了一个途径。分享在线文章的链接是媒体参与度的一个指标。聚合链接共享形成了一个网络结构，它映射了用户群体的集体媒体参与。在这里，我们构建了将Twitter用户与他们共享的网页联系起来的双向网络，使用了近200万用户在事件发生的七周内发布的约530万条英语推文的数据集，这些推文集中在美国宣布退出关于气候变化的巴黎协定。社区检测表明，所观察到的信息共享网络可以被划分为两个弱连接的组件，表示由一组用户共享的文章的子集。我们通过分析共享文章的Web域和文本内容来分析这些分区，发现它们被广泛描述为左翼/环保主义团体和右翼/气候怀疑论者团体。相关分析显示，左/右的政治意识形态和环境主义/怀疑主义的气候意识形态分别显着的正相关。随着时间的推移，信息共享在参与的用户群体和共享的文章中有相当大的流动性，但网络域来源和两极分化的网络结构相对持久。这项研究提供的证据表明，与气候变化相关的新闻媒体内容的在线共享既两极分化又政治化，对围绕这一重要社会挑战的舆论动态和公众辩论产生了影响。
Exposure to media content is an important component of opinion formation around climate change. Online social media such as Twitter, the focus of this study, provide an avenue to study public engagement and digital media dissemination related to climate change. Sharing a link to an online article is an indicator of media engagement. Aggregated link-sharing forms a network structure which maps collective media engagement by the user population. Here we construct bipartite networks linking Twitter users to the web pages they shared, using a dataset of approximately 5.3 million English-language tweets by almost 2 million users during an eventful seven-week period centred on the announcement of the US withdrawal from the Paris Agreement on climate change. Community detection indicates that the observed information-sharing network can be partitioned into two weakly connected components, representing subsets of articles shared by a group of users. We characterise these partitions through analysis of web domains and text content from shared articles, finding them to be broadly described as a left-wing/environmentalist group and a right-wing/climate sceptic group. Correlation analysis shows a striking positive association between left/right political ideology and environmentalist/sceptic climate ideology respectively. Looking at information-sharing over time, there is considerable turnover in the engaged user population and the articles that are shared, but the web domain sources and polarised network structure are relatively persistent. This study provides evidence that online sharing of news media content related to climate change is both polarised and politicised, with implications for opinion dynamics and public debate around this important societal challenge.
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