Exposure to ideologically diverse news and opinion on Facebook
Exposure to ideologically diverse news and opinion on Facebook
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DOI：
10.1126/science.aaa1160
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发表时间：
2015-06-05
期刊：
影响因子：
56.9
通讯作者：
Adamic, Lada A.
中科院分区：
文献类型：
--
作者：
Bakshy, Eytan;Messing, Solomon;Adamic, Lada A.
越来越多的人通过社交媒体接触到新闻、观点和公民信息。这些在线网络是如何影响人们接触到跨越意识形态界线的观点的？使用已确认身份的数据，我们调查了1010万美国Facebook用户如何与社交分享的新闻互动。我们直接测量了朋友网络中的意识形态同质性，并检查了不同类型的朋友可能在多大程度上潜在地让个人接触到交叉内容。然后，我们量化了个人在通过Facebook按算法排名的News Feed进行互动时遇到的相对多样化的内容的程度，并进一步研究了用户选择点击进入意识形态不一致的内容的选择。与算法排名相比，个人的选择在限制交叉内容的暴露方面发挥了更大的作用。
Exposure to news, opinion, and civic information increasingly occurs through social media. How do these online networks influence exposure to perspectives that cut across ideological lines? Using deidentified data, we examined how 10.1 million U.S. Facebook users interact with socially shared news. We directly measured ideological homophily in friend networks and examined the extent to which heterogeneous friends could potentially expose individuals to cross-cutting content. We then quantified the extent to which individuals encounter comparatively more or less diverse content while interacting via Facebook's algorithmically ranked News Feed and further studied users' choices to click through to ideologically discordant content. Compared with algorithmic ranking, individuals' choices played a stronger role in limiting exposure to cross-cutting content.